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Question 421Question →

A nurse is preparing to perform open airway suctioning for a client who has a newly established tracheostomy. In what order should the nurse perform the following actions to minimize the risk of complications such as hypoxemia and mucosal trauma?

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Answer

The correct order is to first assess baseline respiratory status, then hyperoxygenate the client, advance the catheter without suction, apply intermittent suction upon withdrawal, and finally reassess respiratory status.
The correct sequence for airway suctioning prioritizes evidence-based steps to reduce risk potential. Establishing a baseline assessment ensures the procedure is indicated. Hyperoxygenation must immediately precede the intervention to protect against severe oxygen depletion. To prevent mucosal tearing, the catheter must be advanced without suction. Suction is then applied intermittently only during rotational withdrawal to safely clear the airway. Finally, post-procedure assessment evaluates the efficacy of the intervention and the client's physiological stability.

Step-by-Step Solution

1
Assess the client's baseline breath sounds and oxygen saturation.
A clinical baseline is established.
Assessment is always the first step of the nursing process before an intervention to verify the clinical indication.
2
Hyperoxygenate the client with 100% oxygen.
The client's oxygen reserves are temporarily maximized.
Suctioning removes oxygen from the airway along with secretions; hyperoxygenation significantly reduces the risk of procedure-induced hypoxemia.
3
Advance the sterile suction catheter into the airway without applying suction.
The catheter is positioned safely at the appropriate depth.
Applying suction during advancement can strip oxygen away prematurely and traumatize the delicate tracheal mucosa.
4
Apply intermittent suction while rotating and withdrawing the catheter.
Secretions are effectively cleared from the airway.
Rotating and intermittently suctioning during withdrawal limits mucosal adherence and minimizes localized tissue damage.
5
Reassess the client's breath sounds and respiratory status.
The effectiveness of the suctioning procedure is determined.
Post-procedure evaluation is required to ensure the airway is clear and the client has not experienced adverse physiological effects.

Key Concept

Proper sequencing of open airway tracheostomy suctioning to prevent hypoxemia and mucosal trauma.
Question 422Question →

A 28-year-old client is 4 hours postoperative following an emergency open splenectomy for abdominal trauma. Over the past two hours, the nurse notes the client's heart rate has increased from 88 to 116 beats per minute, and urine output has decreased to 15 mL/hr. The current blood pressure is 104/78 mm Hg. The nurse reviews the most recent arterial blood gas (ABG) results: pH 7.31, PaCO2 36 mm Hg, PaO2 94 mm Hg, and HCO3 16 mEq/L. Based on these findings, which interpretation and corresponding action are the highest priority for the nurse to mitigate impending physiological decompensation?

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Answer: Recognize the uncompensated metabolic acidosis as an indicator of inadequate tissue perfusion and prepare to rapidly administer prescribed intravenous isotonic fluids or blood products.

Answer

The nurse must recognize the uncompensated metabolic acidosis as a sign of inadequate tissue perfusion caused by hypovolemic shock, and prepare to rapidly administer intravenous fluids or blood products.
The client's clinical presentation following a highly vascular open splenectomy strongly suggests internal hemorrhage leading to hypovolemic shock. The rising heart rate, narrowing pulse pressure, and severe oliguria (15 mL/hr) are compensatory mechanisms attempting to maintain cardiac output. As circulating volume drops, tissues are deprived of oxygen, forcing them into anaerobic metabolism. This produces lactic acid, which manifests on the ABG as an uncompensated metabolic acidosis (pH < 7.35, normal PaCO2, and HCO3 < 22 mEq/L). The absolute priority risk-reduction intervention is to restore tissue perfusion and oxygen delivery by rapidly administering prescribed isotonic fluids or blood products.

Step-by-Step Solution

1
Analyze the vital sign and urine output trends in the context of the surgical procedure.
The client had a highly vascular surgery (splenectomy) and is exhibiting increasing tachycardia, a narrowing pulse pressure, and severe oliguria.
These are classic compensatory signs of active hemorrhage and impending hypovolemic shock.
2
Interpret the provided Arterial Blood Gas (ABG) values.
The pH is low (7.31), indicating acidemia. The PaCO2 is normal (36 mm Hg). The HCO3 is low (16 mEq/L), identifying the primary issue as uncompensated metabolic acidosis.
Accurate ABG interpretation is required to determine the physiological source of the client's decompensation.
3
Synthesize the assessment data with the pathophysiological process.
The metabolic acidosis is the direct result of inadequate tissue perfusion; lack of oxygen forces cells into anaerobic metabolism, producing lactic acid.
Connecting the lab values to the clinical signs confirms the diagnosis of tissue hypoxia secondary to volume loss.
4
Determine the highest priority nursing intervention to reduce the risk of mortality.
The nurse must act immediately to restore circulating blood volume with isotonic IV fluids or blood products.
Without rapid volume expansion, the client will progress from compensatory shock to irreversible shock and multi-organ failure.

Key Concept

Early recognition of hypovolemic shock and interpretation of metabolic acidosis as a late sign of impaired tissue perfusion.
Question 423Question →

A client with chronic kidney disease is receiving continuous intravenous fluids. The nurse evaluates the client for physiological manifestations of fluid volume overload. Which of the following assessment findings indicate that the client is experiencing this complication? Select all that apply.

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Answer: Bilateral crackles auscultated in the lung bases; Jugular venous distension when the head of the bed is elevated; A bounding and full radial pulse

Answer

The findings that indicate fluid volume overload are bilateral crackles in the lung bases, jugular venous distension, and a bounding, full radial pulse.
Fluid volume overload (hypervolemia) leads to an expansion of the intravascular space and increased hydrostatic pressure. This physiological adaptation manifests clinically as a bounding and full pulse due to increased cardiac output, jugular venous distension due to elevated central venous pressure, and pulmonary crackles as excess fluid is forced into the alveolar spaces.

Step-by-Step Solution

1
Analyze the client's risk factors.
The client has chronic kidney disease and is receiving intravenous fluids, placing them at high risk for fluid volume overload.
Kidneys with decreased function cannot adequately excrete excess fluid, making intravenous fluid administration a significant risk factor.
2
Evaluate each assessment finding against the pathophysiology of fluid volume excess.
Crackles, jugular venous distension, and a bounding pulse align with increased hydrostatic pressure and expanded intravascular volume.
Excess fluid increases central venous pressure (causing jugular distension), forces fluid into the alveoli (causing crackles), and increases stroke volume (causing a bounding pulse).
3
Identify and exclude findings associated with opposing conditions.
A narrowing pulse pressure and a weak, thready pulse are excluded.
These findings are associated with decreased intravascular volume (hypovolemia) and early shock.

Key Concept

Fluid Volume Excess Manifestations
Question 424Question →

The nurse receives the shift report for four clients on a vascular and pulmonary step-down unit. Which client requires the most immediate assessment by the nurse?

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Answer: A client 12 hours postoperative following an abdominal aortic aneurysm repair who has a urine output of 20 mL over the past hour and a narrowing pulse pressure.

Answer

The client 12 hours postoperative following an abdominal aortic aneurysm repair who has a urine output of 20 mL over the past hour and a narrowing pulse pressure requires the most immediate assessment.
The correct answer identifies the client exhibiting early, subtle signs of physiological decompensation. A urine output of less than 30 mL/hr and a narrowing pulse pressure are critical indicators that the body is attempting to adapt to a severe fluid volume deficit (likely internal hemorrhage from the AAA repair site). This represents an acute circulation crisis requiring immediate rapid response.

Step-by-Step Solution

1
Analyze the clinical presentation of the postoperative client.
Identified low urine output and a narrowing pulse pressure in a high-risk surgical client.
These are classic early indicators of compensatory shock and decreased organ perfusion, possibly due to graft failure.
2
Evaluate the respiratory client's ABG results.
Identified a normal pH (7.36) with an elevated PaCO2 (56 mm Hg), indicating fully compensated respiratory acidosis.
This is a chronic, expected physiological adaptation for severe COPD, representing stability rather than acute decompensation.
3
Review the remaining clients' clinical data.
Identified expected findings for an active infection (fever, mild tachycardia) and expected chronic findings for right-sided heart failure (edema, weight gain).
To confirm that their conditions, while requiring medical management, do not pose an immediate threat to life.
4
Prioritize the clients based on the ABCs (Airway, Breathing, Circulation) and risk for immediate mortality.
The postoperative client is selected as the highest priority.
Acute hemorrhage or hypovolemic shock represents a critical failure of circulation that will rapidly become fatal if left unaddressed.

Key Concept

Prioritization of early shock manifestations over chronic physiological adaptations.
Question 425Question →

A nurse is planning care for an older adult client who is recovering from a right total hip arthroplasty performed 24 hours ago. The client needs support with comfort measures and daily activities. Which of the following actions is the most appropriate for the nurse to implement?

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Answer: Place an abduction wedge between the client's lower extremities during turning and repositioning.

Answer

The most appropriate action is to use an abduction wedge between the client's legs when repositioning.
Placing an abduction wedge between the client's lower extremities prevents adduction of the operative hip. Following a total hip arthroplasty, maintaining the legs in a slightly abducted position is critical to prevent the prosthesis from dislocating.

Step-by-Step Solution

1
Identify the client's surgical procedure and associated risks.
The client had a total hip arthroplasty, which carries a high risk of prosthetic dislocation if the hip is positioned incorrectly.
Recognizing postoperative restrictions is critical for determining safe basic care and mobility practices.
2
Analyze standard positioning precautions for this specific surgery.
Standard precautions dictate avoiding adduction (crossing legs), internal rotation, and hip flexion greater than 90 degrees.
These movements can force the femoral head out of the acetabular cup.
3
Evaluate each option against safe practice and nursing scope.
Using an abduction wedge is the only correct and safe action. High-Fowler's violates flexion limits, UAPs cannot perform assessments, and acute confusion requires immediate medical evaluation.
Eliminating actions that are contraindicated or outside the scope of practice isolates the correct evidence-based intervention.

Key Concept

Postoperative Positioning and Safe Basic Care
Estimated Time:1m 15s
Question 426Question →

An adult client admitted with a traumatic brain injury begins to exhibit sustained tonic-clonic seizure activity. The client has one dedicated peripheral intravenous (IV) catheter currently infusing 5% dextrose in 0.45% sodium chloride at 100 mL/hr. The physician orders a 1,000 mg loading dose of intravenous phenytoin. Which of the following actions demonstrates the safest administration technique for this medication?

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Answer: Pause the primary infusion, flush the line with 0.9% sodium chloride, administer the medication through an inline filter, and flush again with 0.9% sodium chloride.

Answer

Pause the primary infusion, flush the line with 0.9% sodium chloride, administer the medication through an inline filter, and flush again with 0.9% sodium chloride.
Phenytoin is highly alkaline and physically incompatible with all dextrose-containing solutions, which cause it to rapidly precipitate. Therefore, the primary dextrose infusion must be paused, and the intravenous line must be flushed thoroughly with 0.9% sodium chloride (normal saline) both before and after administration to clear the line of any dextrose. Additionally, intravenous phenytoin requires an inline filter to catch any microscopic crystals and must be administered slowly (not exceeding 50 mg/min) to prevent severe hypotension and cardiac arrhythmias.

Step-by-Step Solution

1
Identify the continuous maintenance fluid currently infusing.
The client is receiving a solution containing dextrose (5% dextrose in 0.45% sodium chloride).
Determining compatibility with the prescribed IV push medication is the first principle of safe parenteral administration.
2
Evaluate the specific pharmacological properties and compatibility requirements of intravenous phenytoin.
Phenytoin is physically incompatible with any dextrose-containing solutions and requires an inline filter for administration.
Mixing phenytoin with dextrose causes rapid precipitation and crystal formation, which can lead to a potentially fatal embolism or line occlusion.
3
Determine the safe rate of administration.
The maximum safe administration rate for IV phenytoin in adults is 50 mg/min. A 1,000 mg dose must be infused over a minimum of 20 minutes.
Rapid infusion of phenytoin is severely cardiotoxic and can cause profound hypotension, bradycardia, and arrhythmias.
4
Select the safest administration technique based on these physiological constraints.
The primary dextrose infusion must be paused, the line flushed extensively with 0.9% sodium chloride, the medication infused through a filter, and the line flushed again before resuming maintenance fluids.
This sequence completely prevents mixing incompatible solutions while adhering to all safety requirements for this high-alert medication.

Key Concept

Safe Intravenous Administration of Phenytoin
Question 427Question →

A nurse is assessing a client who is at risk for developing hypovolemic shock due to excessive postoperative bleeding. Which of the following is typically the earliest clinical manifestation of hypovolemic shock?

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Answer: Unexplained mild tachycardia

Answer

Unexplained mild tachycardia
In hypovolemic shock, the body's initial compensatory response to a decrease in circulating blood volume is the activation of the sympathetic nervous system. This immediately causes an increase in heart rate (tachycardia) in an attempt to maintain adequate cardiac output and tissue perfusion before any significant drop in blood pressure occurs.

Step-by-Step Solution

1
Recall the body's physiological response to acute volume loss.
The sympathetic nervous system activates immediately to sustain cardiac output and tissue perfusion.
Understanding the sequence of compensatory mechanisms is necessary to identify early versus late signs.
2
Identify the earliest measurable clinical manifestation of sympathetic activation.
An increase in heart rate (tachycardia) occurs rapidly to compensate for the decreasing stroke volume.
Tachycardia preserves blood pressure in the early stages, making it an earlier indicator than hypotension.

Key Concept

Early recognition of shock compensatory mechanisms
Question 428Question →

The nurse is reviewing assessment findings for several clients recovering from recent supratentorial craniotomies. Which of the following clinical findings indicate impending physiological decompensation and require immediate nursing intervention? (Select all that apply.)

Select all that apply

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Answer: Urine output of 1,100 mL over the past hour with a urine specific gravity of 1.001; Arterial blood gas results revealing a pH of 7.28 and a PaCO2 of 56 mmHg; A Glasgow Coma Scale (GCS) score that has decreased from 14 to 12 since the last assessment

Answer

The correct findings that require immediate intervention are the massive dilute urine output, the acidotic arterial blood gas with hypercapnia, and the decreased Glasgow Coma Scale score.
The findings requiring immediate intervention are those that indicate a disruption in physiological stability. A massive urine output with dilute specific gravity points to diabetes insipidus, which can rapidly lead to hypovolemic shock. An elevated PaCO2 (hypercapnia) causes cerebral blood vessels to dilate, drastically increasing intracranial pressure (ICP) and risking herniation. A decrease in the Glasgow Coma Scale by 2 or more points is a sensitive, urgent indicator of neurological deterioration that requires immediate provider notification.

Step-by-Step Solution

1
Evaluate the urine output and specific gravity.
A high output of highly dilute urine indicates diabetes insipidus.
Surgical trauma near the pituitary gland can disrupt antidiuretic hormone (ADH) secretion, rapidly leading to severe hypovolemia.
2
Analyze the abnormal arterial blood gas (ABG) values.
A pH of 7.28 and PaCO2 of 56 mmHg indicates uncompensated respiratory acidosis.
Hypercapnia (elevated carbon dioxide) causes cerebral vasodilation, which increases cerebral blood volume and dramatically raises intracranial pressure.
3
Assess the change in the Glasgow Coma Scale (GCS) score.
A drop from 14 to 12 represents a significant clinical decline.
A decrease of 2 or more points in the GCS is a highly sensitive indicator of neurological deterioration and potential brain herniation.
4
Differentiate critical findings from expected therapeutic or postoperative states.
The 30-degree bed elevation, normal ABG values, and facial edema are identified as safe or expected.
Prioritization requires distinguishing what constitutes a life-threatening physiological change versus a normal recovery trajectory.

Key Concept

Recognizing signs of increased intracranial pressure, respiratory acidosis, and diabetes insipidus is crucial for reducing the risk of permanent neurological damage following cranial surgery.
Estimated Time:1m 30s
Question 429Question →

During a shift in the intensive care unit, the nurse assumes care for a patient in cardiogenic shock whose current weight is 80 kg80\text{ kg}. The patient has a central venous catheter infusing dobutamine at a rate of 24 mL/hr24\text{ mL/hr}. The IV bag is labeled as containing 500 mg500\text{ mg} of dobutamine mixed in 250 mL250\text{ mL} of normal saline. Following a hemodynamic assessment, the critical care prescriber instructs the nurse to increase the dobutamine dosage by 2.5 mcg/kg/min2.5\text{ mcg/kg/min}. Calculate the new rate at which the nurse should program the infusion pump. Record your answer in mL/hr\text{mL/hr} as a whole number.

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Answer: 30

Answer

30
To find the new infusion rate, first determine the concentration of the medication: 500 mg500\text{ mg} in 250 mL250\text{ mL} is equivalent to 2 mg/mL2\text{ mg/mL} or 2000 mcg/mL2000\text{ mcg/mL}. The provider ordered an increase of 2.5 mcg/kg/min2.5\text{ mcg/kg/min}. For an 80 kg80\text{ kg} patient, this amounts to an additional 200 mcg/min200\text{ mcg/min} (2.5×802.5 \times 80), which converts to an extra 12,000 mcg/hr12,000\text{ mcg/hr} (200×60200 \times 60). By dividing this hourly dose increase by the concentration (12,000÷200012,000 \div 2000), you find the pump needs to deliver an additional 6 mL/hr6\text{ mL/hr}. Adding this to the baseline rate of 24 mL/hr24\text{ mL/hr} yields the new programmed setting of 30 mL/hr30\text{ mL/hr}.

Step-by-Step Solution

1
Convert the total medication mass from milligrams to micrograms and calculate the concentration per mL.
500 mg×1000 mcg/mg=500,000 mcg500\text{ mg} \times 1000\text{ mcg/mg} = 500,000\text{ mcg}. Then, 500,000 mcg÷250 mL=2000 mcg/mL500,000\text{ mcg} \div 250\text{ mL} = 2000\text{ mcg/mL}.
Standardizing the concentration unit to micrograms is necessary because the ordered dosage change is measured in micrograms.
2
Calculate the total microgram increase required per minute based on the patient's weight.
2.5 mcg/kg/min×80 kg=200 mcg/min2.5\text{ mcg/kg/min} \times 80\text{ kg} = 200\text{ mcg/min}.
Weight-based dosing must be multiplied by the patient's actual weight in kilograms to determine the total required dose per minute.
3
Convert the microgram increase per minute to a microgram increase per hour.
200 mcg/min×60 min/hr=12,000 mcg/hr200\text{ mcg/min} \times 60\text{ min/hr} = 12,000\text{ mcg/hr}.
Intravenous infusion pumps are programmed in hours, so the rate per minute must be multiplied by 60 minutes.
4
Determine the additional fluid volume per hour needed for the increase, and add it to the current baseline rate.
12,000 mcg/hr÷2000 mcg/mL=6 mL/hr12,000\text{ mcg/hr} \div 2000\text{ mcg/mL} = 6\text{ mL/hr} increase. New rate: 24 mL/hr+6 mL/hr=30 mL/hr24\text{ mL/hr} + 6\text{ mL/hr} = 30\text{ mL/hr}.
Adding the calculated additional volume rate to the baseline rate yields the final programmed setting on the infusion pump.

Key Concept

Weight-Based Intravenous Medication Titration
Question 430Question →

A nurse is caring for a client with a T4 spinal cord injury who suddenly reports a severe, pounding headache and exhibits profuse diaphoresis. The client's blood pressure is 210/110 mm Hg210/110 \text{ mm Hg}. Arrange the following nursing actions in the correct priority sequence.

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Answer

The correct priority sequence is to first elevate the head of the bed, then assess the urinary catheter, followed by administering antihypertensive medication if needed, and finally documenting the event.
In the management of autonomic dysreflexia, the immediate priority is to lower the blood pressure to prevent a stroke by elevating the head of the bed. The nurse must then find and eliminate the cause (most often a full bladder or bowel impaction). If these measures fail, medications are administered. Documentation is always the final step.

Step-by-Step Solution

1
Elevate the head of the bed to a high Fowler's position.
Decreases venous return to the heart and lowers blood pressure via orthostasis.
This is the most rapid, non-pharmacological way to lower the blood pressure and prevent a cerebral hemorrhage during autonomic dysreflexia.
2
Assess the urinary catheter tubing for kinks or obstruction.
Identifies and potentially resolves the most common trigger (bladder distension).
Autonomic dysreflexia is triggered by a noxious stimulus below the level of the spinal cord injury; removing it often resolves the crisis.
3
Administer a prescribed short-acting antihypertensive medication.
Lowers blood pressure pharmacologically.
Required if the noxious stimulus cannot be found or if blood pressure remains dangerously high despite removing the stimulus.
4
Document the incident, the interventions provided, and the client's response.
Maintains an accurate legal and medical record.
Documentation should always occur after the client is stable and acute life-saving measures have been completed.

Key Concept

Prioritization in Autonomic Dysreflexia
Question 431Question →

A nurse is evaluating a client who is being treated for acute peritonitis. Which of the following assessment findings indicate the client is experiencing the early, hyperdynamic phase of septic shock? Select all that apply.

Select all that apply

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Answer: Bounding peripheral pulses; Arterial blood gas results indicating respiratory alkalosis; Heart rate of 124 beats/minute

Answer

The correct findings are bounding peripheral pulses, arterial blood gas results indicating respiratory alkalosis, and a heart rate of 124 beats/minute.
In the early, hyperdynamic (warm) phase of septic shock, the body's systemic inflammatory response causes massive peripheral vasodilation. To compensate for decreased systemic vascular resistance, cardiac output temporarily increases, leading to tachycardia and bounding peripheral pulses. Additionally, the client hyperventilates as an early compensatory mechanism, blowing off excess carbon dioxide and resulting in respiratory alkalosis.

Step-by-Step Solution

1
Analyze the pathophysiology of the early (warm) phase of septic shock.
The early phase is characterized by a systemic inflammatory response leading to massive peripheral vasodilation and a hyperdynamic circulatory state.
Understanding the underlying vascular changes is necessary to accurately predict the physical assessment findings.
2
Evaluate the cardiovascular findings against the pathophysiology.
A heart rate of 124 beats/minute and bounding peripheral pulses are expected. A narrowed pulse pressure is incorrect.
To compensate for profound vasodilation (decreased systemic vascular resistance), the heart pumps harder and faster, thereby increasing cardiac output and widening the pulse pressure.
3
Evaluate the skin and respiratory findings against the pathophysiology.
Respiratory alkalosis is expected. Cool, clammy skin and metabolic acidosis are incorrect.
Tachypnea is an early compensatory mechanism that causes excessive carbon dioxide elimination (respiratory alkalosis). Skin is initially warm and flushed due to vasodilation, whereas cool/clammy skin and lactic (metabolic) acidosis occur in the late, decompensated phase.

Key Concept

The early (hyperdynamic) phase of septic shock is characterized by massive peripheral vasodilation, a compensatory increase in cardiac output, and hyperventilation, which present clinically as warm skin, bounding pulses, tachycardia, and respiratory alkalosis.
Question 432Question →

A nurse in the intensive care unit is caring for a client with acute necrotizing pancreatitis who has received massive intravenous fluid resuscitation over the past 24 hours. The client is increasingly restless and dyspneic. The nurse notes the following assessment findings:

- Urine output has decreased from 45 mL/hr45\text{ mL/hr} to 15 mL/hr15\text{ mL/hr} over the last two hours.
- The abdomen is tense, markedly distended, and firm to palpation.
- Intra-abdominal pressure (IAP) measured via the urinary catheter is 26 mm Hg26\text{ mm Hg}.
- Vital signs: Blood pressure 88/54 mm Hg88/54\text{ mm Hg}, heart rate 128 beats/min128\text{ beats/min}, respiratory rate 28 breaths/min28\text{ breaths/min}.
- Arterial blood gas (ABG) results: pH 7.287.28, PaCO2\text{PaCO}_2 30 mm Hg30\text{ mm Hg}, PaO2\text{PaO}_2 76 mm Hg76\text{ mm Hg}, HCO3−\text{HCO}_3^- 14 mEq/L14\text{ mEq/L}.

Which of the following actions is the highest priority for the nurse to implement to reduce the client's risk for further physiological deterioration?

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Answer: Maintain the client in a supine position and immediately notify the healthcare provider of the findings.

Answer

The highest priority action is to maintain the client in a supine position and immediately notify the healthcare provider to prepare for surgical decompression.
The client is exhibiting classical signs of Abdominal Compartment Syndrome (ACS), defined as an intra-abdominal pressure (IAP) greater than 20 mm Hg20\text{ mm Hg} accompanied by new organ dysfunction (e.g., oliguria, hypotension, hypoxia). ACS is a life-threatening complication of massive fluid resuscitation that causes obstructive shock by compressing the inferior vena cava and decreasing venous return. The priority action to reduce the risk of irreversible organ failure is to notify the healthcare provider immediately for emergent surgical decompression (laparotomy). The nurse must maintain the client in a flat, supine position because elevating the head of the bed further compresses the abdominal contents and acutely exacerbates the intra-abdominal pressure.

Step-by-Step Solution

1
Analyze the clinical findings and intra-abdominal pressure (IAP) reading.
The IAP is 26 mm Hg26\text{ mm Hg} (normal is 0−5 mm Hg0-5\text{ mm Hg}), accompanied by oliguria, hypotension, and a rigid abdomen.
Identifying an IAP greater than 20 mm Hg20\text{ mm Hg} combined with new onset organ dysfunction confirms the life-threatening diagnosis of Abdominal Compartment Syndrome (ACS).
2
Interpret the arterial blood gas (ABG) results.
The pH is 7.287.28 (acidosis), HCO3−\text{HCO}_3^- is 14 mEq/L14\text{ mEq/L} (metabolic etiology), and PaCO2\text{PaCO}_2 is 30 mm Hg30\text{ mm Hg} (respiratory compensation).
This confirms partially compensated metabolic acidosis, likely secondary to lactic acidosis from severe tissue hypoperfusion and ischemia.
3
Determine the physiological mechanism of the client's circulatory collapse.
The massive increase in intra-abdominal pressure is physically compressing the inferior vena cava, severely restricting venous return to the heart.
Understanding that this is obstructive shock rather than absolute hypovolemic shock prevents the dangerous administration of additional intravenous fluids.
4
Select the priority nursing intervention to mitigate further physiological risk.
The nurse must keep the client in a flat, supine position and urgently alert the medical team for emergent surgical intervention (laparotomy).
Elevating the head of the bed or administering more fluids will acutely worsen the intra-abdominal pressure, accelerating irreversible organ failure.

Key Concept

Recognition and Emergency Management of Abdominal Compartment Syndrome (ACS)
Estimated Time:2m 30s
Question 433Question →

A nurse is caring for a client who was admitted to the trauma intensive care unit 44 hours ago following a high-speed motor vehicle collision. The client sustained a complete T2 spinal cord transection and a severe pelvic fracture.

Initial admission vital signs:
- Blood pressure: 94/60 mmHg94/60 \text{ mmHg}
- Heart rate: 58 bpm58 \text{ bpm}
- Respiratory rate: 18 breaths/min18 \text{ breaths/min}
- The client's skin was warm and dry below the chest.

Current assessment findings (44 hours later):
- Blood pressure: 70/40 mmHg70/40 \text{ mmHg}
- Heart rate: 64 bpm64 \text{ bpm}
- Respiratory rate: 28 breaths/min28 \text{ breaths/min}
- Urine output: 10 mL10 \text{ mL} over the past 22 hours
- Skin is now pale and diaphoretic above the level of injury.
- Arterial Blood Gas (ABG): pH 7.267.26, PaCO2\text{PaCO}_2 34 mmHg34 \text{ mmHg}, PaO2\text{PaO}_2 88 mmHg88 \text{ mmHg}, HCO3−\text{HCO}_3^- 15 mEq/L15 \text{ mEq/L}

Which of the following is the priority nursing action?

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Answer: Prepare to administer a rapid transfusion of packed red blood cells.

Answer

Prepare to administer a rapid transfusion of packed red blood cells.
The client is experiencing severe hemorrhagic shock secondary to the pelvic fracture, which is being masked by the concurrent T2 spinal cord injury. Normally, hemorrhagic shock triggers a massive sympathetic response resulting in significant tachycardia. However, a spinal cord transection at T2 blocks the sympathetic cardiac accelerator nerves (T1-T4), preventing the heart rate from elevating appropriately. The nurse must recognize the other critical indicators of profound hypoperfusion: a severe drop in blood pressure, extreme oliguria, and uncompensated metabolic acidosis (indicated by the low pH and HCO3−\text{HCO}_3^-). Because the client has an 'empty tank' from blood loss, volume resuscitation with blood products is the absolute priority to restore oxygen-carrying capacity and tissue perfusion.

Step-by-Step Solution

1
Analyze the baseline and current vital signs in the context of the client's injuries.
The client has profound hypotension (70/40 mmHg70/40 \text{ mmHg}), severe oliguria (10 mL10 \text{ mL} in 22 hours), and is unable to mount a tachycardic response (64 bpm64 \text{ bpm}) due to the T2 spinal cord transection.
Recognizing the physiological limitations caused by a high thoracic spinal cord injury is essential to accurately interpret the absence of classic shock signs like tachycardia.
2
Interpret the Arterial Blood Gas (ABG) results.
The ABG shows an uncompensated metabolic acidosis (pH 7.267.26, HCO3−\text{HCO}_3^- 15 mEq/L15 \text{ mEq/L}), likely due to elevated lactic acid from systemic hypoperfusion.
Metabolic acidosis in a trauma client with a pelvic fracture strongly indicates severe internal bleeding and tissue ischemia.
3
Prioritize nursing interventions based on the ABCs (Airway, Breathing, Circulation).
The client is in uncompensated hemorrhagic shock, masked by neurogenic shock. Immediate volume resuscitation with blood products is the highest priority.
Restoring circulating blood volume and oxygen-carrying capacity is the only way to reverse the lethal cycle of hemorrhagic shock.

Key Concept

Identifying masked hemorrhagic shock in clients with high thoracic or cervical spinal cord injuries.
Question 434Question →

A client with septic shock is receiving a continuous intravenous (IV) infusion of norepinephrine through a single-lumen peripherally inserted central catheter (PICC). The client's current mean arterial pressure (MAP) is 60 mmHg60\text{ mmHg}. The healthcare provider prescribes a stat IV dose of sodium bicarbonate to treat severe metabolic acidosis. No other IV access is currently established. Which of the following actions by the nurse is the most appropriate?

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Answer: Establish a second peripheral intravenous access site prior to administering the sodium bicarbonate.

Answer

Establish a second peripheral intravenous access site prior to administering the sodium bicarbonate.
The correct action recognizes two critical safety principles: first, life-sustaining vasopressors like norepinephrine cannot be paused in hemodynamically unstable clients; second, catecholamines are inactivated by alkaline solutions like sodium bicarbonate. Establishing a new IV access is the only way to safely administer both.

Step-by-Step Solution

1
Analyze the client's hemodynamic status and current continuous infusions.
The client has a MAP of 60 mmHg and relies on a continuous norepinephrine infusion to maintain perfusion.
Understanding the critical nature of the continuous infusion dictates whether it can be safely interrupted.
2
Determine the chemical compatibility of the prescribed medications.
Sodium bicarbonate (alkaline) and norepinephrine (catecholamine) are chemically incompatible.
Mixing incompatible medications can lead to precipitation or drug inactivation.
3
Evaluate the feasibility of using the existing single-lumen PICC.
The PICC cannot be used for the sodium bicarbonate because the norepinephrine cannot be paused, and the two drugs cannot mix.
Pausing the vasopressor causes immediate hypotension, and mixing them destroys the vasopressor.
4
Select the intervention that safely delivers both medications.
A new peripheral IV line must be inserted.
This allows uninterrupted delivery of the life-saving vasopressor while independently treating the metabolic acidosis.

Key Concept

Management of incompatible parenteral therapies and life-sustaining continuous infusions.
Question 435Question →

A nurse is monitoring a client who is receiving an intravenous transfusion of packed red blood cells. Ten minutes after the transfusion begins, the client develops sudden severe lower back pain, tachycardia, and dyspnea. Place the following nursing interventions in the correct order of priority to mitigate further physiological risk to the client. (Arrange the steps from first action to last action.)

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Answer

The correct sequence is to first stop the transfusion, then maintain intravenous access with normal saline using new tubing, followed by assessing the client's current status, notifying the provider and blood bank, and finally returning the discontinued blood products for laboratory analysis.
The priority in any acute adverse event is to remove or stop the offending agent immediately to reduce physiological risk. Once stopped, maintaining intravenous access is critical for resuscitation. Assessment must follow to gather current data before calling the provider, ensuring the nurse can provide an accurate SBAR report. Administrative and follow-up tasks, such as returning the bag to the laboratory, always occur last after the client is stabilized.

Step-by-Step Solution

1
Stop the blood transfusion.
Halts the administration of the offending blood product.
Immediate risk mitigation to prevent a worsening antigen-antibody reaction.
2
Connect a new 0.9% sodium chloride infusion.
Maintains intravenous patency without pushing residual blood.
Allows for emergency medication and fluid administration to treat potential shock.
3
Assess the client.
Obtains current vital signs and respiratory clinical data.
Guides further emergency interventions and prepares data for provider notification.
4
Notify the provider and blood bank.
Initiates collaborative emergency medical response.
Secures medical orders for treatment and triggers the hospital's adverse reaction protocol.
5
Send products to the blood bank.
Facilitates laboratory and hematological investigation.
Identifies the exact cause of the reaction, such as ABO incompatibility or bacterial contamination.

Key Concept

Prioritization of Care in Acute Transfusion Reactions
Question 436Question →

A client is recovering from a recent lumbar puncture and has been prescribed strict bed rest. The client is also experiencing generalized weakness, urinary incontinence, and intermittent mild confusion. Which of the following nursing interventions should be included in the care plan to promote comfort, maintain skin integrity, and ensure safety? Select all that apply.

Select all that apply

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Answer: Provide a dim, quiet environment to minimize sensory stimulation and promote rest.; Apply a moisture barrier ointment to the perineal region after cleansing following incontinence.; Utilize a friction-reducing draw sheet with a second staff member when turning the client.

Answer

The correct interventions are providing a dim and quiet environment, applying moisture barrier ointment, and utilizing a friction-reducing draw sheet.
Providing a dim, quiet environment minimizes sensory overload and promotes rest for a confused client. Applying a moisture barrier ointment protects the skin from maceration and breakdown caused by urinary incontinence. Utilizing a friction-reducing draw sheet with assistance prevents shearing forces that can cause deep tissue injury when repositioning.

Step-by-Step Solution

1
Analyze the client's clinical presentation, noting the recent lumbar puncture, weakness, incontinence, and confusion.
Identify the need for safety, skin protection, and specific post-procedure positioning.
A comprehensive understanding of the client's current status guides the selection of appropriate nursing interventions.
2
Evaluate each intervention against standard nursing practice and post-lumbar puncture guidelines.
Select interventions that promote comfort and skin integrity while maintaining a flat supine position.
Evidence-based practice ensures client safety and prevents complications such as spinal headaches or skin breakdown.

Key Concept

Basic Care and Comfort: Post-procedure Positioning, Skin Integrity, and Safety
Question 437Question →

A client's recent arterial blood gas (ABG) results are as follows: pH=7.51\text{pH} = 7.51, PaCO2=42 mm Hg\text{PaCO}_2 = 42 \text{ mm Hg}, and HCO3−=33 mEq/L\text{HCO}_3^- = 33 \text{ mEq/L}. Which of the following underlying conditions or treatments are most likely responsible for this acid-base imbalance? Select all that apply.

Select all that apply

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Answer: Prolonged nasogastric tube suctioning; Persistent, severe vomiting

Answer

Prolonged nasogastric tube suctioning and persistent, severe vomiting.
The provided ABG values demonstrate an elevated pH\text{pH} (>7.45> 7.45) and an elevated bicarbonate (HCO3−\text{HCO}_3^- >26 mEq/L> 26 \text{ mEq/L}) with a normal carbon dioxide level (PaCO2\text{PaCO}_2 35−45 mm Hg35-45 \text{ mm Hg}). This profile defines uncompensated metabolic alkalosis. Metabolic alkalosis is typically caused by a significant loss of body acid or an accumulation of bicarbonate. Prolonged nasogastric suctioning and persistent vomiting deplete the body of hydrochloric acid from the stomach. Therefore, these two conditions correctly explain the ABG findings.

Step-by-Step Solution

1
Analyze the arterial blood gas (ABG) values.
The pH\text{pH} is 7.517.51 (alkalosis), PaCO2\text{PaCO}_2 is 42 mm Hg42 \text{ mm Hg} (normal), and HCO3−\text{HCO}_3^- is 33 mEq/L33 \text{ mEq/L} (elevated).
Determining the primary acid-base imbalance is necessary to identify the potential underlying causes.
2
Interpret the specific type of acid-base imbalance.
The elevated pH\text{pH} and elevated HCO3−\text{HCO}_3^- with a normal PaCO2\text{PaCO}_2 indicate uncompensated metabolic alkalosis.
Matching the ABG interpretation to clinical scenarios is the core requirement of the question.
3
Evaluate each clinical scenario to see if it causes metabolic alkalosis.
Gastric suctioning and vomiting lead to significant acid loss, which directly causes metabolic alkalosis.
Confirming that the selected options physiologically result in the identified ABG imbalance ensures accuracy.

Key Concept

Metabolic Alkalosis Causes and ABG Interpretation
Question 438Question →

A nurse is analyzing the clinical profile of a client who abruptly developed severe dyspnea, pleuritic chest pain, and a feeling of impending doom. A massive pulmonary embolism is confirmed, and the client is currently exhibiting signs of obstructive shock. Which of the following hemodynamic and laboratory findings are consistent with this physiological decompensation? Select all that apply.

Select all that apply

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Answer: Central venous pressure (CVP) of 16 mm Hg; Arterial blood gas results demonstrating pH 7.52, PaCO2 29 mm Hg, and PaO2 54 mm Hg

Answer

The findings consistent with obstructive shock secondary to a massive pulmonary embolism are an elevated CVP (16 mm Hg) and respiratory alkalosis with hypoxemia (pH 7.52, PaCO2 29 mm Hg, PaO2 54 mm Hg).
A massive pulmonary embolism creates a sudden mechanical obstruction in the pulmonary vasculature. This dramatically increases pulmonary vascular resistance, causing acute right ventricular failure (cor pulmonale). Consequently, blood backs up into the systemic venous circulation, leading to a significantly elevated Central Venous Pressure (CVP of 16 mm Hg; normal is 2-8 mm Hg). Simultaneously, the severe ventilation-perfusion (V/Q) mismatch causes profound hypoxemia (PaO2 54 mm Hg). In response to the hypoxemia and physiological stress, the client hyperventilates, which blows off excessive carbon dioxide and results in an early respiratory alkalosis (pH 7.52, PaCO2 29 mm Hg).

Step-by-Step Solution

1
Analyze the pathophysiology of a massive pulmonary embolism (PE).
A large embolus creates a mechanical obstruction in the pulmonary artery, drastically increasing pulmonary vascular resistance.
Understanding the location of the obstruction is required to trace upstream and downstream hemodynamic effects.
2
Evaluate the upstream (right-sided) hemodynamic effects of the obstruction.
The right ventricle dilates and fails against the high resistance (acute cor pulmonale), causing blood to back up into the systemic venous system, resulting in an elevated CVP.
This identifies why central venous pressure rises significantly in obstructive shock.
3
Evaluate the downstream (left-sided) hemodynamic effects of the obstruction.
Because blood cannot pass through the pulmonary circulation, left ventricular preload is severely diminished. Consequently, PAWP remains low or normal, and cardiac output plummets.
This differentiates obstructive shock from cardiogenic shock, where PAWP would be highly elevated.
4
Assess the compensatory mechanisms and gas exchange alterations.
The ventilation-perfusion (V/Q) mismatch causes profound hypoxemia. The client's compensatory tachypnea blows off excessive CO2, producing an early respiratory alkalosis. Sympathetic activation increases SVR.
This correlates the ABG values and systemic vascular resistance findings with the acute disease process.

Key Concept

Hemodynamic profile and arterial blood gas alterations in obstructive shock secondary to massive pulmonary embolism.
Question 439Question →

An emergency department team is treating a client with advanced chronic obstructive pulmonary disease (COPD) who arrived via ambulance due to worsening lethargy and severe dyspnea. The client is currently on a 2 L/min nasal cannula.

Clinical Data:
* Neurological: Somnolent but rousable to verbal stimuli
* Vital Signs: HR 118 bpm, RR 10 breaths/min and shallow, BP 142/86 mm Hg
* Arterial Blood Gas (ABG): pH 7.24, PaCO2 76 mm Hg, PaO2 54 mm Hg, HCO3 33 mEq/L

Based on the clinical presentation and laboratory results, which action is the priority?

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Answer: Prepare to assist with the initiation of noninvasive positive-pressure ventilation (NIPPV).

Answer

Prepare to assist with the initiation of noninvasive positive-pressure ventilation (NIPPV).
The client is in acute hypercapnic respiratory failure (CO2 narcosis), evidenced by somnolence, a low respiratory rate (10 breaths/min), and severe respiratory acidosis (pH 7.24, PaCO2 76 mm Hg). Noninvasive positive-pressure ventilation (NIPPV) provides ventilatory support, increasing tidal volume and alveolar ventilation to blow off excess CO2, correct the acidosis, and improve oxygenation without the immediate need for invasive endotracheal intubation.

Step-by-Step Solution

1
Analyze the Arterial Blood Gas (ABG) values.
pH is 7.24 (acidosis), PaCO2 is 76 mm Hg (severe respiratory acidosis), and PaO2 is 54 mm Hg (severe hypoxemia). HCO3 is 33 mEq/L (partial metabolic compensation).
Accurate ABG interpretation is required to identify the primary acid-base disturbance and the severity of respiratory failure.
2
Correlate ABG findings with the client's clinical presentation.
The client is somnolent with a shallow respiratory rate of 10 breaths/min.
Severe hypercapnia (high PaCO2) causes central nervous system depression (CO2 narcosis), leading to hypoventilation and lethargy.
3
Determine the highest priority intervention based on the ABCs (Airway, Breathing, Circulation).
The client requires immediate mechanical assistance to breathe (ventilation) because they are failing to clear CO2 independently.
NIPPV is the first-line therapy to rapidly improve ventilation, reduce PaCO2, and reverse acute respiratory acidosis in arousable COPD clients before respiratory arrest occurs.

Key Concept

Management of Acute-on-Chronic Respiratory Acidosis in COPD
Question 440Question →

A triage nurse evaluates a client with type 1 diabetes mellitus who presents with a capillary blood glucose of 610 mg/dL, fruity breath odor, and profound lethargy. The client is exhibiting deep, rapid respirations. Arrange the following nursing interventions in the correct chronological order of execution.

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Answer

The correct priority sequence is: 1) Assess airway patency, 2) Establish large-bore IV access, 3) Administer a bolus of 0.9% sodium chloride, 4) Review the serum potassium level, and 5) Initiate a continuous infusion of regular insulin.
The management of an acute physiological crisis like Diabetic Ketoacidosis strictly follows the ABCs (Airway, Breathing, Circulation) and specific metabolic safety guidelines. Airway is always verified first. Circulation is addressed next by securing IV access and administering isotonic fluids to resolve life-threatening hypovolemia. Finally, before the metabolic issue (hyperglycemia) can be treated with insulin, the nurse must ensure the serum potassium level is known, as insulin profoundly lowers serum potassium.

Step-by-Step Solution

1
Perform an airway and respiratory assessment.
Ensures adequate oxygenation and ventilation.
Following the ABCs (Airway, Breathing, Circulation), confirming airway patency is always the absolute first priority, particularly given the client's lethargy and abnormal breathing pattern.
2
Insert a large-bore IV catheter.
Provides a reliable route for rapid fluid administration.
Vascular access is a mechanical necessity before any pharmacological or fluid resuscitation can begin for a physiologically unstable client.
3
Infuse 0.9% sodium chloride rapidly.
Expands intravascular volume and improves tissue perfusion.
Clients with Diabetic Ketoacidosis (DKA) experience severe osmotic diuresis. Addressing the resulting hypovolemia takes precedence over correcting the blood glucose level.
4
Check the baseline serum potassium level.
Identifies current electrolyte status to prevent iatrogenic harm.
Insulin administration drives potassium back into the cells. If a client is already hypokalemic, giving insulin first can induce fatal cardiac arrhythmias.
5
Start an IV regular insulin infusion.
Drives glucose into cells and stops ketone production.
Once intravascular volume is being restored and potassium is confirmed safe, insulin is safely administered to resolve the underlying hyperglycemia and acidosis.

Key Concept

Prioritization of acute interventions in Diabetic Ketoacidosis (DKA) based on ABCs and physiological safety.
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