Examkin

Physiological Integrity

1960 soru

Tüm türler1,960Çoktan seçmeli1,004Çoklu seçim425Sayısal102Sıralama429
Soru 1Soru →

A critical care nurse is managing a client diagnosed with severe diabetic ketoacidosis. The client is currently receiving intravenous 0.9%0.9\% sodium chloride and a continuous regular insulin infusion. Clinical assessment reveals lethargy and a regular, deep respiratory rate of 3232 breaths per minute. The most recent laboratory results indicate:

• Arterial blood gas: pH 7.267.26, PaCO 2_2 2929 mmHg, HCO 3−_3^- 1212 mEq/L, PaO 2_2 9494 mmHg
• Serum glucose: 242242 mg/dL (13.413.4 mmol/L)
• Serum potassium: 3.13.1 mEq/L (3.13.1 mmol/L)

Which intervention should the nurse perform first to mitigate the risk of a fatal physiological complication?

Cevabı ve açıklamayı göster

Cevap: Suspend the continuous regular insulin infusion immediately

Cevap

Suspend the continuous regular insulin infusion immediately.
In diabetic ketoacidosis (DKA), total body potassium is severely depleted despite potentially normal initial serum levels. Insulin therapy shifts potassium from the extracellular space into the intracellular space, which can rapidly precipitate severe, life-threatening hypokalemia. Evidence-based protocols mandate that if the serum potassium falls below 3.33.3 mEq/L, the insulin infusion must be suspended immediately, and aggressive potassium replacement must be initiated to prevent fatal cardiac arrhythmias. Addressing this immediate threat to life constitutes the highest priority in risk reduction.

Adım Adım Çözüm

1
Analyze the client's current potassium level.
The serum potassium is 3.13.1 mEq/L, which is critically low (below the 3.33.3 mEq/L threshold).
Identifying life-threatening electrolyte imbalances is the primary step in physiological risk reduction.
2
Evaluate the physiological effect of the current medical interventions.
The continuous insulin infusion is actively shifting the already depleted potassium from the extracellular space into the intracellular space.
Understanding pharmacodynamics is required to anticipate iatrogenic complications during treatment.
3
Determine the priority intervention based on risk reduction protocols.
The insulin infusion must be stopped immediately until the potassium level is corrected.
Continuing insulin will worsen the hypokalemia, inevitably leading to fatal cardiac dysrhythmias. This preventative action takes strict priority over resolving the hyperglycemia.

Anahtar Kavram

In the management of diabetic ketoacidosis, insulin therapy must be immediately withheld if the serum potassium drops below 3.33.3 mEq/L to prevent fatal hypokalemia-induced cardiac arrhythmias.
Tahmini Süre:2m 0s
Soru 2Soru →

A client admitted with community-acquired pneumonia is receiving a continuous intravenous infusion of 5% dextrose in water. The healthcare provider orders a scheduled dose of intravenous levofloxacin. What is the priority nursing action before attaching the secondary medication to the existing intravenous line?

Cevabı ve açıklamayı göster

Cevap: Confirm that the prescribed antibiotic can be safely mixed with the primary intravenous fluid

Cevap

Confirm that the prescribed antibiotic can be safely mixed with the primary intravenous fluid
Before administering a secondary intravenous medication, the most critical safety step is to verify that the medication is compatible with the primary continuous infusion. Mixing incompatible medications or fluids can lead to chemical degradation, precipitate formation, and life-threatening complications such as emboli.

Adım Adım Çözüm

1
Identify the clinical task.
The nurse needs to administer an intermittent secondary intravenous medication into a continuous primary line.
Understanding the type of administration dictates the required safety checks.
2
Apply fundamental parenteral safety principles.
The nurse determines that chemical compatibility must be established before two fluids mix in the same tubing.
Mixing incompatible fluids or medications can cause chemical reactions, crystallization, and severe client harm, making verification the highest priority.

Anahtar Kavram

Intravenous Medication Compatibility
Soru 3Soru →

A client arrives at the emergency department after sustaining a large laceration with significant blood loss. The bleeding is now controlled. Which vital sign change represents the body's earliest physiological adaptation to maintain adequate tissue perfusion?

Cevabı ve açıklamayı göster

Cevap: An increase in heart rate

Cevap

An increase in heart rate
In the early stages of volume loss, the sympathetic nervous system is stimulated. This leads to an increased heart rate (tachycardia) as the body's primary, initial physiological adaptation to maintain cardiac output and ensure vital organs remain perfused.

Adım Adım Çözüm

1
Analyze the clinical scenario
The client has experienced significant blood loss, putting them at risk for hypovolemic shock.
Identifying the primary physiological threat helps anticipate the body's response.
2
Recall the stages of shock and compensatory mechanisms
In the early (compensatory) stage of shock, the sympathetic nervous system activates to preserve cardiac output.
Understanding the timeline of physiological changes is necessary to identify the earliest sign.
3
Evaluate the options against expected early physiological responses
Tachycardia is the earliest response, whereas hypotension is a late sign, pulse pressure narrows, and respiratory rate increases.
This confirms which vital sign change accurately reflects the initial adaptation.

Anahtar Kavram

Early compensatory mechanisms in hypovolemic shock
Soru 4Soru →

A nurse is analyzing the physiological data of a client who is 3636 hours post-operative following an exploratory laparotomy for an ischemic bowel. The client is intubated, mechanically ventilated, and has an arterial line and a central venous catheter in place. The latest assessment data reveals the following:

ParameterCurrent Value
Heart Rate138 bpm138\text{ bpm}
Blood Pressure78/42 mm Hg (MAP 54 mm Hg)78/42\text{ mm Hg (MAP } 54\text{ mm Hg)}
Central Venous Pressure (CVP)2 mm Hg2\text{ mm Hg}
Systemic Vascular Resistance (SVR)550 dynes/sec/cm−5550\text{ dynes/sec/cm}^{-5}
Serum Lactate6.8 mmol/L6.8\text{ mmol/L}
pH7.187.18
PaCO2\text{PaCO}_258 mm Hg58\text{ mm Hg}
PaO2\text{PaO}_254 mm Hg54\text{ mm Hg}
HCO3−\text{HCO}_3^-14 mEq/L14\text{ mEq/L}

Based on these findings, which of the following conclusions and corresponding nursing actions are correct? (Select all that apply)

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: The arterial blood gas values reveal a mixed respiratory and metabolic acidosis; anticipate adjusting the mechanical ventilator settings to increase minute ventilation.; The systemic vascular resistance and mean arterial pressure indicate profound vasodilation; prepare to administer a prescribed continuous vasopressor infusion once intravascular volume is restored.; The elevated serum lactate in conjunction with the hemodynamic profile reflects severe tissue hypoperfusion; anticipate the rapid administration of intravenous isotonic crystalloids.

Cevap

The correct conclusions are that the client is experiencing a mixed respiratory and metabolic acidosis requiring increased minute ventilation, profound vasodilation requiring vasopressors after volume restoration, and severe tissue hypoperfusion requiring rapid isotonic crystalloids.
The physiological data provided describes a client in severe distributive (septic) shock complicated by a mixed acid-base disorder. The low systemic vascular resistance and low central venous pressure confirm massive vasodilation and relative hypovolemia, necessitating aggressive isotonic fluid resuscitation followed by vasopressors to maintain a mean arterial pressure above 65 mm Hg65\text{ mm Hg}. The elevated lactate level directly reflects anaerobic metabolism due to this severe tissue hypoperfusion. Furthermore, the arterial blood gases reveal a pH of 7.187.18 with both an elevated PaCO2\text{PaCO}_2 (respiratory acidosis) and a decreased HCO3−\text{HCO}_3^- (metabolic acidosis). Because both systems are deranged in the acidic direction, this is a mixed acidosis, and adjusting the ventilator to increase minute ventilation is the appropriate intervention to address the respiratory component.

Adım Adım Çözüm

1
Analyze the hemodynamic parameters to determine the type of shock.
The low CVP (2 mm Hg2\text{ mm Hg}) indicates relative or absolute hypovolemia, while the low SVR (550 dynes/sec/cm−5550\text{ dynes/sec/cm}^{-5}) indicates massive vasodilation. Combined with a low MAP (54 mm Hg54\text{ mm Hg}), this profile definitively points to distributive (septic) shock.
Identifying the specific shock state is crucial for determining the correct physiological interventions (fluids and vasopressors rather than inotropes or diuretics).
2
Interpret the arterial blood gas (ABG) values.
The pH is 7.187.18 (severe acidemia). The PaCO2\text{PaCO}_2 is 58 mm Hg58\text{ mm Hg} (respiratory acidosis) and the HCO3−\text{HCO}_3^- is 14 mEq/L14\text{ mEq/L} (metabolic acidosis). This represents a mixed respiratory and metabolic acidosis.
Because both the respiratory and metabolic parameters are abnormal in the acidic direction, neither is compensating; both are actively contributing to the life-threatening acidemia.
3
Evaluate tissue oxygenation and cellular metabolism.
The serum lactate is markedly elevated at 6.8 mmol/L6.8\text{ mmol/L} (normal is typically <2.0 mmol/L< 2.0\text{ mmol/L}).
High lactate confirms that inadequate oxygen delivery to the tissues has forced cells into anaerobic metabolism, confirming severe hypoperfusion.
4
Select the appropriate corresponding nursing actions based on the physiological data.
The client urgently needs intravenous isotonic crystalloids to correct the hypoperfusion, vasopressors to reverse the profound vasodilation if fluids are insufficient, and adjustments to the mechanical ventilator to resolve the respiratory acidosis component.
These interventions directly target the underlying pathophysiological derangements identified in the assessment.

Anahtar Kavram

Interpretation of complex hemodynamic parameters and mixed acid-base disorders in distributive (septic) shock.
Soru 5Soru →

A nurse is assessing a client who is 4 hours post-operative following a total thyroidectomy. Which assessment findings should indicate to the nurse that the client is developing a severe physiological complication requiring immediate intervention? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Tingling and numbness around the mouth and distal extremities; A harsh, high-pitched sound auscultated over the trachea during inspiration; The client reports a progressive sensation of pressure and fullness in the neck

Cevap

The assessment findings that indicate a severe complication requiring immediate intervention are tingling and numbness around the mouth and distal extremities, a harsh, high-pitched sound auscultated over the trachea during inspiration, and a progressive sensation of pressure and fullness in the neck.
The correct findings directly correspond to the three major, life-threatening complications of a thyroidectomy. Tingling and numbness around the mouth (circumoral paresthesia) and distal extremities are early indicators of hypocalcemia due to inadvertent damage to or removal of the parathyroid glands. A harsh, high-pitched sound on inspiration (stridor) is a sign of acute airway obstruction caused by laryngeal edema or recurrent laryngeal nerve damage. A progressive sensation of pressure and fullness in the neck is a hallmark sign of hemorrhage and an expanding hematoma, which can rapidly compress the trachea.

Adım Adım Çözüm

1
Analyze the clinical scenario
The client is 4 hours post-operative following a total thyroidectomy.
Identifying the specific surgical procedure and timeframe helps anticipate the early post-operative complications that are most critical to monitor for.
2
Identify potential life-threatening complications of a total thyroidectomy
The major physiological complications include airway obstruction (due to laryngeal edema or recurrent laryngeal nerve damage), hemorrhage or expanding hematoma, and hypocalcemia (due to parathyroid gland damage).
Recognizing these specific risks allows the nurse to prioritize assessment findings that require immediate emergency intervention.
3
Evaluate each assessment finding against known complications and expected post-operative data
Tingling indicates hypocalcemia. Stridor indicates airway obstruction. Neck pressure indicates an expanding hematoma. Conversely, scant drainage, normal arterial blood gases, and a semi-Fowler's position are expected and safe findings.
Differentiating between expected post-operative findings and signs of severe physiological compromise is essential for accurate clinical judgment and risk reduction.

Anahtar Kavram

Early recognition of life-threatening complications following a total thyroidectomy, specifically airway compromise, hemorrhage, and hypocalcemia.
Soru 6Soru →

A physician orders an intramuscular analgesic for a client in acute pain. The medication is dispensed by the pharmacy in a small glass ampule. Which sequence of actions should the nurse follow to safely extract the medication and prepare the syringe for injection?

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Cevabı ve açıklamayı göster

Cevap

The correct sequence for preparing medication from an ampule begins with moving the fluid to the lower chamber, protecting the hands, breaking the glass safely, using a filter needle to withdraw the fluid, and finally changing the needle prior to injection.
Safely preparing a medication from an ampule requires a strict sequence to protect both the nurse and the client. Fluid must first be displaced from the neck. Then, the nurse must protect their hands with gauze and snap the ampule away from their body to prevent injury. A filter needle is essential to prevent drawing up glass shards, and this needle must be exchanged for a standard needle prior to injecting the client.

Adım Adım Çözüm

1
Flick the upper stem of the ampule.
Medication moves to the lower chamber.
Ensures the entire dose is accessible for withdrawal and prevents spilling.
2
Wrap a sterile gauze pad around the ampule neck.
Fingers are shielded from the glass.
Prevents laceration injuries during the breaking process.
3
Snap the top section away from the body.
The ampule is opened safely.
Directs potential glass shards away from the nurse's face and body.
4
Withdraw medication using a filter needle.
Medication is drawn up without glass particles.
Filter needles catch microscopic glass fragments that inevitably fall into the liquid when the ampule is broken.
5
Replace the filter needle with an injection needle.
The syringe is ready for intramuscular administration.
Filter needles cannot be used to inject medication into a client's tissue.

Anahtar Kavram

Safe preparation of parenteral medications from a glass ampule
Soru 7Soru →

An ambulatory care nurse is monitoring a 61-year-old client who underwent a percutaneous needle biopsy of the liver one hour ago. The client is currently lying supine with the head of the bed elevated and reports a new onset of dull right shoulder ache. The current heart rate is 112 beats per minute with a blood pressure of 98/62 mm Hg. Pre-procedure baseline vital signs were a heart rate of 78 beats per minute and a blood pressure of 128/76 mm Hg. Which action is the priority for the nurse to take?

Cevabı ve açıklamayı göster

Cevap: Turn the client onto the right side and place a folded towel under the puncture site.

Cevap

The priority action is to turn the client onto the right side and place a folded towel under the puncture site to apply pressure and stop potential bleeding.
The client is exhibiting early signs of hypovolemic shock (tachycardia, hypotension) and referred right shoulder pain, which suggests internal bleeding irritating the diaphragm. Turning the client onto the right side applies direct pressure to the liver capsule at the puncture site, which is the immediate priority to tamponade the bleeding.

Adım Adım Çözüm

1
Analyze the client's clinical presentation and vital sign trends.
The client has developed a new right shoulder ache, a heart rate increase from 78 to 112 bpm, and a blood pressure decrease from 128/76 to 98/62 mm Hg.
Identifying deviations from baseline is necessary to detect post-procedure complications early.
2
Correlate the assessment findings with potential complications of a percutaneous liver biopsy.
The liver is a highly vascular organ. Tachycardia, hypotension, and referred right shoulder pain (phrenic nerve irritation from blood) strongly indicate internal hemorrhage.
Recognizing the pathophysiology of referred pain and early hemorrhagic shock guides the choice of intervention.
3
Determine the priority nursing intervention to mitigate the identified risk.
The immediate action is to apply physical pressure to the biopsy site by positioning the client in the right lateral decubitus position.
Direct pressure on the liver capsule tamponades the bleeding, stabilizing the client before notifying the healthcare provider.

Anahtar Kavram

Mitigating hemorrhage risk following a percutaneous liver biopsy
Soru 8Soru →

A client is admitted to the intensive care unit with severe diabetic ketoacidosis (DKA). The client is lethargic with a blood glucose of 680 mg/dL (37.7 mmol/L), a serum pH of 7.12, and a blood pressure of 82/48 mm Hg. Arrange the following collaborative nursing actions in the priority order they should be implemented.

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Cevabı ve açıklamayı göster

Cevap

The correct sequence is: 1. Administer a rapid bolus of 0.9% sodium chloride to restore volume; 2. Evaluate the serum potassium level to ensure safety; 3. Initiate a continuous intravenous infusion of regular insulin to correct acidosis; 4. Incorporate 5% dextrose into the hydration fluids once glucose reaches 250 mg/dL to prevent hypoglycemia.
In the management of severe diabetic ketoacidosis (DKA), the immediate physiological priority is to address life-threatening hypovolemia and impaired tissue perfusion caused by osmotic diuresis; therefore, isotonic fluid resuscitation is the first step. Following the initiation of fluids, the nurse must verify the serum potassium level. Insulin therapy causes an intracellular shift of potassium, which can precipitate fatal cardiac arrhythmias if the client is already hypokalemic. Once a safe potassium level is confirmed (greater than 3.3 mEq/L), a continuous regular insulin infusion is started to halt ketone production and correct the acidosis. Finally, as the blood glucose decreases to approximately 250 mg/dL (13.9 mmol/L), dextrose must be added to the intravenous fluids to prevent hypoglycemia and to avoid rapid osmotic shifts that can lead to cerebral edema.

Adım Adım Çözüm

1
Administer a rapid bolus of 0.9% sodium chloride.
Intravascular volume is restored, and tissue perfusion improves.
Severe osmotic diuresis in DKA leads to profound dehydration and hypovolemic shock (evidenced by the blood pressure of 82/48 mm Hg), which must be addressed immediately.
2
Evaluate the initial comprehensive metabolic panel for the serum potassium level.
Ensures the serum potassium is at least 3.3 mEq/L (3.3 mmol/L).
Insulin therapy drives potassium into the intracellular space. Administering insulin without confirming adequate potassium levels can trigger fatal arrhythmias.
3
Initiate a continuous intravenous infusion of regular insulin.
Ketone production is halted, and metabolic acidosis is corrected.
Once perfusion is improving and potassium is safe, regular insulin is required to reverse the underlying metabolic derangements of DKA.
4
Incorporate 5% dextrose into the intravenous hydration fluids.
Blood glucose slowly stabilizes without dropping too rapidly.
When blood glucose reaches 250 mg/dL (13.9 mmol/L), adding dextrose prevents iatrogenic hypoglycemia and protects against rapid osmotic changes that cause cerebral edema.

Anahtar Kavram

The physiological priority in Diabetic Ketoacidosis (DKA) is sequential management: fluid volume restoration, electrolyte verification, insulin administration, and hypoglycemia prevention.
Soru 9Soru →

While completing morning rounds, a nurse assesses a client who underwent a partial colectomy the previous day. The client is receiving continuous intravenous fluids and utilizing a morphine patient-controlled analgesia (PCA) device. The nurse observes that the client is profoundly somnolent, minimally responsive to tactile stimuli, and exhibits shallow respirations at a rate of 7 breaths per minute with an oxygen saturation of 85% on room air. Which immediate interventions are appropriate to mitigate further physiological risk? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Pause the continuous infusion and patient-initiated doses of the morphine PCA.; Prepare to administer intravenous naloxone as prescribed by the healthcare provider.; Apply supplemental oxygen and stimulate the client to take deep breaths.

Cevap

The correct interventions for suspected opioid-induced respiratory depression include pausing the PCA pump, preparing and administering naloxone, and applying supplemental oxygen while stimulating the client.
The client is exhibiting classic signs of acute opioid toxicity: profound sedation, significant bradypnea (7 breaths per minute), and hypoxia. The immediate priority is to stop the administration of the offending medication by pausing the PCA pump. Naloxone is an opioid antagonist that rapidly reverses respiratory depression and must be administered promptly. Concurrently, applying supplemental oxygen and physically stimulating the client helps manage the severe hypoxia and encourages spontaneous ventilation.

Adım Adım Çözüm

1
Identify the clinical emergency based on the assessment data.
The client has a respiratory rate of 7 breaths per minute, an oxygen saturation of 85%, and profound somnolence.
These are classic signs of opioid toxicity and impending respiratory failure, requiring immediate intervention.
2
Prioritize immediate life-saving interventions utilizing the ABCs (Airway, Breathing, Circulation).
Interventions that protect the airway, restore breathing, and reverse the medication's effects are selected first.
Without adequate oxygenation and ventilation, irreversible neurological damage or cardiac arrest can occur.
3
Eliminate the source of the toxicity and administer the specific antidote.
The morphine PCA is stopped immediately, supplemental oxygen is applied, and intravenous naloxone is prepared.
Naloxone competitively binds to opioid receptors, rapidly reversing the central nervous system and respiratory depression caused by the morphine.

Anahtar Kavram

Management of Opioid-Induced Respiratory Depression
Soru 10Soru →

A registered nurse is providing discharge instructions to a client with a right tibial fracture who must maintain strict non-weight-bearing status on the affected extremity. Arrange the following steps in the correct chronological sequence for safely ascending a flight of stairs using bilateral axillary crutches without the use of a handrail.

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Cevabı ve açıklamayı göster

Cevap

The correct sequence for ascending stairs with crutches is to establish a tripod stance, transfer weight to the crutches, advance the unaffected leg up, shift weight to the unaffected leg, and finally bring the crutches and the affected leg up.
When ascending stairs with crutches, the fundamental principle is 'up with the good'. The client must first establish a stable tripod stance. Next, weight is shifted entirely to the upper body via the crutches so the strong, unaffected leg can be safely lifted onto the step. Once the strong leg is firmly planted on the step, the client shifts their weight onto that leg, using its strength to power the lift of the body. Finally, the client brings the crutches and the affected leg up together. This sequence ensures the injured extremity bears no weight and maximizes stability throughout the transfer.

Adım Adım Çözüm

1
Assume a stable tripod stance facing the bottom of the staircase.
The client establishes a secure and balanced starting position.
A wide base of support prevents loss of balance before upward momentum is initiated.
2
Transfer body weight entirely onto the handgrips of the crutches.
The client's body weight is fully supported by the upper extremities.
This removes weight from the lower extremities, allowing the strong leg to be lifted safely without compromising balance.
3
Advance the unaffected left leg up onto the stair tread.
The strong leg is securely placed on the higher surface.
The strong leg must ascend first ('up with the good') to provide the necessary power to lift the rest of the body.
4
Shift body weight from the crutches onto the unaffected left leg.
The client's weight is now completely supported by the strong leg on the stair.
Transferring weight to the stable leg frees the upper body and crutches to be lifted.
5
Bring both crutches and the affected right leg up to the stair tread.
The client completes the step and returns to a stable tripod stance on the higher level.
The crutches and the non-weight-bearing leg follow the strong leg to prepare for the next step while maintaining the weight-bearing restriction.

Anahtar Kavram

Crutch Walking on Stairs (Ascending)
Soru 11Soru →

A nurse is caring for a client who is receiving treatment for severe sepsis secondary to a perforated bowel. Upon assessment, the client is restless with cold, clammy skin. Vital signs include a heart rate of 134 beats/min, a blood pressure of 82/46 mm Hg, and a respiratory rate of 36 breaths/min with deep, rapid inspirations. The latest arterial blood gas (ABG) results are: pH 7.23, PaCO2 27 mm Hg, PaO2 84 mm Hg, and HCO3- 12 mEq/L. Based on these findings, which conclusion correctly directs the nurse's immediate priorities?

Cevabı ve açıklamayı göster

Cevap: The deep, rapid breathing is a necessary compensatory mechanism for metabolic acidosis caused by tissue hypoperfusion; the nurse should prioritize improving systemic circulation with prescribed vasopressors or fluid volume.

Cevap

The correct answer accurately identifies the acid-base imbalance as metabolic acidosis with respiratory compensation, recognizing that the priority is to treat the underlying hypoperfusion without suppressing the compensatory breathing.
The client is in septic shock, leading to cellular hypoxia and lactic acid production, which manifests as metabolic acidosis (low pH, low HCO3-). The deep, rapid breathing is a vital physiological adaptation (respiratory compensation) to exhale CO2 and prevent a further drop in pH. The priority is to treat the underlying hypoperfusion to stop lactic acid production, typically by administering prescribed IV fluids or vasopressors to increase the mean arterial pressure.

Adım Adım Çözüm

1
Analyze the arterial blood gas (ABG) results.
The pH is 7.23 (acidosis). The HCO3- is 12 mEq/L (primary metabolic acidosis). The PaCO2 is 27 mm Hg (low, indicating partial respiratory compensation).
Systematic ABG interpretation is required to determine the client's primary physiological alteration and compensatory state.
2
Correlate the ABG findings with the client's clinical presentation.
The client has severe sepsis, hypotension (82/46 mm Hg), and tachycardia. These are signs of shock, leading to cellular hypoxia, anaerobic metabolism, and lactic acidosis.
Understanding the etiology of the metabolic acidosis guides appropriate clinical interventions.
3
Evaluate the respiratory pattern.
The respiratory rate of 36 breaths/min with deep, rapid inspirations (Kussmaul respirations) is the body's attempt to blow off CO2 to raise the pH.
Interfering with a vital compensatory mechanism can lead to rapid physiological decompensation.
4
Determine the highest priority nursing action.
The nurse must address the root cause (hypoperfusion) by optimizing hemodynamics with fluids or vasopressors rather than attempting to alter the compensatory respiratory pattern.
In shock states, restoring tissue perfusion is the definitive treatment for resolving lactic acidosis.

Anahtar Kavram

In shock states, metabolic acidosis occurs due to lactic acid accumulation from tissue hypoperfusion. The body compensates via hyperventilation (Kussmaul respirations) to decrease PaCO2. Nursing care must focus on restoring perfusion rather than suppressing the compensatory respiratory drive.
Soru 12Soru →

During the initial recovery period following a percutaneous coronary intervention via the right femoral approach, a client reports a new, deep ache in the right lower back. Vital sign trending over the past 30 minutes shows the heart rate increasing from 82 to 114 bpm and the blood pressure decreasing from 128/74 to 104/58 mm Hg. Which action is the priority?

Cevabı ve açıklamayı göster

Cevap: Assess the right groin and retroperitoneal area for firmness, swelling, and ecchymosis

Cevap

The priority action is to assess the right groin and retroperitoneal area for firmness, swelling, and ecchymosis.
The correct action directly addresses the most critical risk. The client's symptoms (new back pain, tachycardia, and decreasing blood pressure) strongly suggest a retroperitoneal hemorrhage. Inspecting the groin and flank for ecchymosis (Grey Turner's sign) and swelling is the immediate priority assessment to validate this life-threatening complication so rapid intervention can be initiated.

Adım Adım Çözüm

1
Analyze the clinical cues provided in the scenario.
The client has new lower back pain, tachycardia (HR 114), and falling blood pressure (BP 104/58) following a right femoral artery procedure.
Identifying abnormal trends is the first step in recognizing post-procedure complications.
2
Correlate the symptoms with potential physiological complications of a femoral access procedure.
The combination of flank/back pain and signs of hypovolemia strongly indicates retroperitoneal bleeding, a life-threatening complication of femoral arterial access.
Blood leaking from the femoral artery can track backward into the retroperitoneal space, causing severe pain and subtle early signs of shock.
3
Determine the priority nursing action using the nursing process.
The nurse must immediately assess the groin and flank for physical signs of bleeding (ecchymosis, swelling, firmness) to confirm the suspicion before escalating care.
Targeted physical assessment provides necessary data to report to the healthcare provider for immediate medical intervention.

Anahtar Kavram

Recognition and mitigation of retroperitoneal hemorrhage following femoral artery access.
Tahmini Süre:1m 15s
Soru 13Soru →

A nurse is preparing to administer an intermittent bolus enteral feeding to a client via a nasogastric (NG) tube. To reduce the risk of aspiration and maintain tube patency, arrange the following steps in the correct order. All options must be used.

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Cevabı ve açıklamayı göster

Cevap

The correct sequence is: Elevate the head of the bed, verify tube placement and assess residual volume, flush the tube with water, administer the feeding, and finally flush the tube again.
The primary goal during enteral feeding is the reduction of risk potential, specifically preventing aspiration and tube occlusion. Therefore, the nurse must first elevate the head of the bed to physically protect the airway. Next, the nurse verifies the tube placement and checks gastric residual volume to ensure physiological readiness. Once airway safety and placement are confirmed, the nurse flushes the tube to establish patency, administers the feeding, and finally flushes the tube again to clear the formula and prevent mechanical clogging.

Adım Adım Çözüm

1
Position the client appropriately.
The head of the bed is elevated to at least 30 to 45 degrees.
This physical intervention uses gravity to immediately reduce the risk of pulmonary aspiration during the procedure.
2
Confirm clinical safety parameters.
NG tube placement is verified and gastric residual volume is evaluated.
This guarantees the feeding is delivered into the gastrointestinal tract safely without overloading the stomach.
3
Establish and verify tube patency.
The tube is flushed with 30 mL of water.
This clears the tube of any previous contents and confirms it is not blocked prior to infusing a thick formula.
4
Deliver prescribed nutrition.
The enteral formula is administered to the client.
Provides the therapeutic nutritional support ordered by the healthcare provider.
5
Maintain equipment function.
The tube is flushed again with water.
This clears the internal lumen of the tube, preventing the formula from coagulating and causing an occlusion.

Anahtar Kavram

Enteral Feeding Safety and Aspiration Precautions
Soru 14Soru →

A 65-year-old client is admitted to the progressive care unit 2 hours after a cardiac catheterization utilizing the right femoral artery approach. The provider prescribes strict supine bed rest with the affected extremity kept straight for 6 hours. The client reports a severe backache, feels hungry, and states an urgent need to void. Which nursing actions are appropriate to address the client's basic care and comfort needs? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Slide a thin, rolled blanket under the lumbar region of the spine; Utilize a fracture bedpan for urinary elimination while ensuring the right leg remains fully extended; Apply a heel-suspension boot to the right lower extremity while keeping the leg in neutral alignment

Cevap

The correct interventions are providing a lumbar roll for comfort, using a fracture bedpan for elimination, and applying a heel-suspension boot to protect skin integrity.
The correct interventions successfully balance the client's fundamental needs for comfort, elimination, and skin protection with the strict physiological requirement to keep the right hip straight. Using a lumbar roll, a fracture bedpan, and a heel protector achieve these basic care goals without compromising the vascular puncture site.

Adım Adım Çözüm

1
Analyze the client's clinical constraints
The client has a right femoral arterial puncture requiring strict flat bed rest and right leg immobilization.
Establishing physical limitations is necessary before implementing basic care interventions.
2
Evaluate comfort interventions for the reported backache
A lumbar roll is safe and effective; instructing the client to bend their knees is contraindicated due to required hip flexion.
Back pain is common during flat bed rest, but interventions must not alter the required straight alignment of the affected leg.
3
Evaluate elimination interventions
Using a fracture bedpan is appropriate because it requires minimal lifting and prevents hip flexion.
The client needs to void, but mobilizing to a commode or using a standard bedpan threatens the puncture site.
4
Evaluate positioning for nutrition
Sitting the client upright (high Fowler's) is strictly contraindicated.
Hip flexion above 15-30 degrees (depending on specific protocol) risks dislodging the arterial clot and causing hemorrhage.
5
Evaluate delegation and hygiene tasks
Delegating the assessment of pedal pulses is inappropriate.
Unlicensed personnel can perform the hygiene, but the RN must conduct all vascular assessments.
6
Evaluate skin integrity interventions
Applying a heel-suspension boot is a correct proactive measure.
Strict immobility rapidly increases the risk of heel breakdown; the boot provides protection while keeping the leg straight.

Anahtar Kavram

Providing fundamental care (elimination, comfort, skin integrity) while adhering to strict procedural immobility constraints.
Soru 15Soru →

A registered nurse is evaluating a client being treated for severe bacterial pneumonia. Over the past hour, the client has become visibly agitated and restless. Current assessment parameters include a heart rate of 118 beats per minute, a respiratory rate of 32 breaths per minute, and cool, diaphoretic extremities. Arterial blood gas (ABG) analysis on room air yields the following: pH 7.50, PaCO2 26 mm Hg, PaO2 54 mm Hg, and HCO3 22 mEq/L. Which of the following is the priority nursing intervention?

Cevabı ve açıklamayı göster

Cevap: Apply a non-rebreather mask with high-flow oxygen and immediately notify the rapid response team

Cevap

Apply a non-rebreather mask with high-flow oxygen and immediately notify the rapid response team.
The client's clinical presentation indicates acute respiratory failure and early compensatory shock, evidenced by severe hypoxemia (PaO2 54 mm Hg), tachycardia, tachypnea, agitation, and cool, diaphoretic skin. The respiratory alkalosis (pH 7.50, PaCO2 26 mm Hg) is a consequence of the client hyperventilating in a physiological attempt to increase oxygen intake. The immediate priority is to correct the severe hypoxemia with high-flow oxygen and escalate care by notifying the rapid response team to prevent further decompensation.

Adım Adım Çözüm

1
Analyze the arterial blood gas (ABG) values.
The pH of 7.50 indicates alkalemia. The PaCO2 of 26 mm Hg indicates a respiratory origin. The PaO2 of 54 mm Hg reveals severe hypoxemia.
Identifying the primary acid-base imbalance and oxygenation status is essential for accurate clinical judgment.
2
Correlate the ABG results with the physical assessment findings.
The tachypnea (32 breaths/min) is causing the respiratory alkalosis. The agitation, tachycardia, and cool, diaphoretic skin are classic early signs of hypoxia and compensatory shock.
Lab values must always be interpreted in the context of the client's systemic physiological presentation.
3
Determine the underlying pathophysiology driving the client's deterioration.
The hyperventilation is a physiological attempt to compensate for the severe, life-threatening hypoxemia.
Treating the root cause (hypoxemia) rather than the compensatory mechanism (hyperventilation) is critical for survival.
4
Select the highest priority nursing intervention.
The client requires immediate high-flow oxygen administration and escalation of care via the rapid response team.
Airway and Breathing take absolute precedence in an unstable, rapidly deteriorating client.

Anahtar Kavram

Recognizing early physiological signs of shock and severe hypoxemia alongside accurate ABG interpretation.
Soru 16Soru →

A nurse is assuming care for a client who underwent a lumbar puncture 30 minutes ago. Which of the following positions should the nurse maintain to minimize the client's risk of developing a post-procedure complication?

Cevabı ve açıklamayı göster

Cevap: Supine with the head of the bed flat

Cevap

Supine with the head of the bed flat
The correct answer is to keep the client supine with the head of the bed flat. Following a lumbar puncture, a small hole remains in the dura mater. Remaining flat minimizes hydrostatic pressure on this site, reducing the risk of cerebrospinal fluid (CSF) leakage and the subsequent development of a severe spinal headache.

Adım Adım Çözüm

1
Identify the procedure performed and its most common complications.
The client had a lumbar puncture, which carries a high risk of cerebrospinal fluid (CSF) leakage leading to a debilitating spinal headache.
Understanding the procedure's specific risks dictates the appropriate preventive nursing interventions.
2
Determine the correct nursing intervention to prevent this specific complication.
Keeping the client completely flat distributes CSF pressure evenly and minimizes leakage from the dural puncture site.
Gravity increases pressure on the puncture site if the head is elevated, exacerbating the leak.
3
Select the option that matches this positioning requirement.
The supine position with the head of the bed flat is the correct choice.
This directly addresses the physiological risk identified and ensures client safety.

Anahtar Kavram

Post-lumbar puncture positioning to prevent spinal headache
Soru 17Soru →

Following a diagnostic spinal tap, a client is transported back to the clinical unit. The client is alert and reports a dull ache near the lumbar insertion site. To promote client comfort and minimize the risk of procedural complications, which of the following actions should the nurse take?

Cevabı ve açıklamayı göster

Cevap: Ensure the client remains resting in a completely flat, horizontal position for the prescribed duration.

Cevap

Ensure the client remains resting in a completely flat, horizontal position for the prescribed duration.
After a lumbar puncture, placing the client in a flat, supine posture is the standard evidence-based intervention. This position equalizes pressure in the central nervous system, drastically reducing the loss of cerebrospinal fluid through the puncture site and thereby preventing a post-dural puncture headache.

Adım Adım Çözüm

1
Identify the procedure the client just underwent and its common complications.
The client had a diagnostic spinal tap (lumbar puncture), which carries a high risk of a post-dural puncture headache due to cerebrospinal fluid leakage.
Understanding the procedural risks dictates the appropriate basic care and comfort interventions.
2
Determine the optimal positioning to prevent this complication.
A flat, supine posture is required to equalize pressure and allow the dural puncture site to seal.
Positioning is a primary independent nursing intervention to promote comfort and prevent post-procedure injury.
3
Evaluate the distractors against the correct nursing action and scope of practice.
Elevating the head or maintaining a fetal position is contraindicated post-procedure. Furthermore, assessing a dressing cannot be delegated.
Safe nursing practice requires selecting the most appropriate evidence-based intervention while adhering to delegation rules.

Anahtar Kavram

Post-Lumbar Puncture Positioning and Comfort
Soru 18Soru →

A nurse is caring for a client admitted to the emergency department with a severe asthma exacerbation. Initially, the client was tachypneic with a respiratory rate of 34 breaths/min, and the initial arterial blood gas (ABG) revealed a pH of 7.50, PaCO2 of 28 mm Hg, and PaO2 of 72 mm Hg. Two hours after receiving continuous nebulized bronchodilators and intravenous corticosteroids, the client remains diaphoretic, is using accessory muscles to breathe, and has significantly diminished breath sounds bilaterally. A repeat ABG shows a pH of 7.38, PaCO2 of 42 mm Hg, and PaO2 of 64 mm Hg. Based on these findings, which of the following is the most accurate interpretation of the client's condition and the priority nursing action?

Cevabı ve açıklamayı göster

Cevap: The client is demonstrating respiratory muscle fatigue and impending respiratory failure; prepare for immediate airway management and intubation.

Cevap

The client is demonstrating respiratory muscle fatigue and impending respiratory failure; prepare for immediate airway management and intubation.
During an acute asthma exacerbation, clients typically hyperventilate to overcome airway resistance, resulting in a decreased PaCO2 (respiratory alkalosis). If the client continues to exhibit severe distress (accessory muscle use, diaphoresis) and significantly diminished breath sounds (suggesting very little air movement), a PaCO2 that normalizes or rises is an ominous sign. It indicates that the client's respiratory muscles are fatigued, and they are losing the ability to ventilate adequately. This signifies impending respiratory failure, and the priority nursing action is to prepare for immediate intubation and mechanical ventilation to secure the airway and support breathing.

Adım Adım Çözüm

1
Analyze the client's clinical presentation.
The client is diaphoretic, using accessory muscles, and has diminished breath sounds.
Clinical signs provide critical context for interpreting diagnostic data. Diminished breath sounds in an asthma exacerbation indicate severely restricted airflow.
2
Interpret the initial and repeat ABG results.
Initial ABG showed respiratory alkalosis (low PaCO2) from hyperventilation. The repeat ABG shows a 'normal' pH and PaCO2, but worsening hypoxemia (lower PaO2).
Comparing trends is essential. In a patient struggling to breathe, a normalizing PaCO2 is a paradoxical finding.
3
Synthesize the clinical and laboratory findings to determine the priority.
The combination of severe respiratory distress and a normalizing PaCO2 means the client can no longer maintain the work of breathing. Impending respiratory failure is occurring.
Recognizing that a 'normal' PaCO2 in the setting of severe asthma is a danger sign ensures timely life-saving interventions.

Anahtar Kavram

In severe asthma, a normalizing or elevated PaCO2 combined with continued respiratory distress indicates respiratory muscle fatigue and impending respiratory failure, requiring immediate intubation.
Tahmini Süre:1m 30s
Soru 19Soru →

A nurse is caring for a client who is receiving a unit of packed red blood cells. Fifteen minutes into the transfusion, the client reports sudden chills, severe lower back pain, and shortness of breath. Arrange the following nursing interventions in the correct priority sequence from first to last.

Öğeleri doğru sıraya koymak için sürükleyin

Cevabı ve açıklamayı göster

Cevap

The correct priority sequence is to stop the transfusion first, maintain IV access with normal saline using new tubing, assess the client's vital signs, notify the provider and blood bank, and finally send the remaining blood and tubing to the blood bank.
In any emergency where a therapeutic intervention causes severe harm (such as a hemolytic transfusion reaction), the absolute first priority is to stop the offending agent. Once stopped, preserving IV access with normal saline and new tubing ensures a route for emergency medications without infusing residual blood. The nurse must then assess the client to gather necessary clinical data before notifying the healthcare provider. Administrative tasks, such as returning the blood bag to the laboratory, are performed only after the client is physiologically stabilized and primary interventions are complete.

Adım Adım Çözüm

1
Stop the blood transfusion immediately.
The infusion of potentially incompatible blood is halted.
This is the most critical first step to minimize the amount of antigen entering the bloodstream, directly reducing the risk of a severe or fatal hemolytic reaction.
2
Infuse normal saline through new IV tubing.
Intravenous access is maintained without infusing residual blood.
The client will likely need emergency medications. New tubing is crucial because flushing the old tubing would push the remaining incompatible blood into the client.
3
Assess the client's vital signs and respiratory status.
Objective clinical data regarding hemodynamic and respiratory stability is gathered.
The nurse must know the client's current status before calling the provider to ensure appropriate emergency orders can be given.
4
Notify the primary healthcare provider and the blood bank.
The medical team is informed and the facility's transfusion reaction protocol is initiated.
The provider must prescribe emergency interventions based on the assessment, and the blood bank must prepare for an investigation.
5
Send the remaining blood product and tubing to the blood bank.
The physical evidence of the reaction is transported for analysis.
This allows the laboratory to retype and crossmatch the blood and test for hemolysis, which is a post-stabilization priority.

Anahtar Kavram

Management of Acute Hemolytic Transfusion Reaction
Soru 20Soru →

A critically ill client admitted with diabetic ketoacidosis (DKA) has a serum potassium level of 2.82.8 mEq/L. The healthcare provider prescribes an intravenous infusion of 2020 mEq potassium chloride (KCl) in 100100 mL of 0.9%0.9\% sodium chloride to be administered over 11 hour. The client has a double-lumen central venous catheter (CVC) in the right internal jugular vein. A continuous regular insulin infusion is actively running through the distal lumen. Which of the following actions should the nurse take regarding the potassium chloride administration? (Select all that apply.)

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Administer the solution through the proximal CVC lumen using an electronic infusion pump.; Verify that the client has produced at least 3030 mL/hr of urine before initiating the infusion.; Ensure the client is connected to a continuous electrocardiogram (ECG) monitor during the infusion.; Aspirate the proximal CVC lumen for a brisk blood return prior to starting the infusion.

Cevap

The correct actions include administering the solution through the available proximal lumen using an electronic pump, verifying adequate urine output, ensuring continuous ECG monitoring, and aspirating for a blood return.
Intravenous potassium chloride is a high-alert medication that requires strict adherence to safety protocols. Because the prescribed rate (2020 mEq/hr) exceeds the standard peripheral limit (1010 mEq/hr), continuous ECG monitoring is mandatory to detect potential cardiac arrhythmias. The nurse must also verify renal function (urine output of at least 3030 mL/hr) to ensure the client can excrete the potassium and avoid hyperkalemia. Furthermore, since potassium is a severe tissue irritant and vesicant, central line patency must be confirmed by aspirating for a brisk blood return before infusion. Finally, an electronic infusion pump is always required to guarantee precise delivery and prevent an accidental rapid bolus.

Adım Adım Çözüm

1
Analyze the prescription and the client's current intravenous access.
The client requires a high-concentration potassium infusion (2020 mEq/hr) and has an available dedicated lumen on a central venous catheter.
Determining the rate and route is essential for identifying the required safety protocols for high-alert medications.
2
Identify the mandatory safety parameters for high-dose intravenous potassium.
Administration requires an electronic volumetric pump, continuous ECG monitoring (due to the rate >10> 10 mEq/hr), and verification of renal function (urine output ≥30\geq 30 mL/hr).
Potassium is primarily excreted by the kidneys and rapid administration can cause fatal cardiac arrhythmias.
3
Evaluate central line administration and medication compatibility principles.
The available proximal lumen should be used after confirming patency via blood aspiration. Connecting to the insulin line without checking compatibility is unsafe.
Potassium is a vesicant that can cause tissue necrosis if extravasated, and manipulating continuous high-alert infusions (like insulin) should be avoided.

Anahtar Kavram

Safe Administration of Parenteral Potassium Chloride and Central Line Management
Sayfa 1 / 98Sonraki