Physiological Integrity

1960 soru

Soru 661Soru →

A nurse is caring for a client who is receiving intravenous fluids through a central venous catheter. The client suddenly develops severe dyspnea, chest pain, and a feeling of impending doom. The nurse suspects a central line-associated air embolism. In what order should the nurse take the following actions to reduce the risk of a life-threatening complication? Arrange the steps from first to last.

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Cevap

The correct order is: 1) Clamp the catheter, 2) place the client in a left lateral Trendelenburg position, 3) administer oxygen, 4) notify the healthcare provider, and 5) remain with the client.
When an air embolism is suspected, the nurse must rapidly intervene using the 'stop, position, oxygenate' approach to reduce the risk of a fatal pulmonary obstruction. The absolute first priority is to stop more air from entering by clamping the line. The second step is to trap the existing air in the right atrium by placing the client in the left lateral Trendelenburg position. Following this, administering 100% oxygen treats hypoxia and helps absorb the air bubble. Finally, the nurse calls for medical assistance and provides continuous monitoring.

Adım Adım Çözüm

1
Clamp the central venous catheter.
The source of air entry is physically blocked.
The most critical initial action during an adverse event is to stop the causative agent or source.
2
Place the client in a left lateral Trendelenburg position.
The client is positioned on their left side with their head lower than their feet.
This specific position traps the air bubble in the apex of the right atrium, preventing it from migrating into the pulmonary artery and causing a right ventricular outflow tract obstruction.
3
Administer high-flow oxygen via a non-rebreather mask.
The client receives 100% oxygen.
High-concentration oxygen relieves hypoxia and creates a diffusion gradient that helps reduce the size of the air embolus by encouraging nitrogen to exit the bubble.
4
Notify the healthcare provider and the rapid response team.
Advanced medical support is summoned.
Once immediate independent life-saving measures are implemented, the provider must be contacted for advanced interventions.
5
Remain with the client and continuously monitor vital signs.
Continuous observation of the client's status is maintained.
The client is critically unstable and requires continuous monitoring for potential cardiopulmonary arrest.

Anahtar Kavram

The emergency management of a suspected central venous catheter air embolism requires stopping further air entry, properly positioning the client to prevent pulmonary obstruction, and providing oxygenation.
Soru 662Soru →

A client with end-stage renal disease misses two dialysis sessions and presents to the emergency department with profound muscle weakness. The initial serum potassium level is 7.6 mEq/L7.6\text{ mEq/L} (7.6 mmol/L7.6\text{ mmol/L}), and the 12-lead electrocardiogram (ECG) reveals absent P waves, a widened QRS complex, and tall, peaked T waves. The healthcare provider prescribes several emergency interventions. Arrange the following nursing actions in the correct priority order from first to last.

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Cevap

The correct priority sequence is: 1) Administer intravenous calcium gluconate, 2) Administer an intravenous bolus of regular insulin and 50% dextrose, 3) Administer oral sodium polystyrene sulfonate, 4) Draw a follow-up serum potassium level.
The correct priority for treating symptomatic hyperkalemia follows the principle of protecting the heart first, shifting potassium second, and eliminating potassium third. Calcium gluconate acts in 1 to 3 minutes to stabilize the myocardium and prevent lethal arrhythmias. Regular insulin with dextrose shifts potassium into cells over 15 to 30 minutes, providing a temporary reduction in serum levels. Sodium polystyrene sulfonate is then administered to permanently bind and excrete potassium from the gastrointestinal tract. Finally, drawing a follow-up serum potassium level evaluates the effectiveness of these treatments.

Adım Adım Çözüm

1
Identify the life-threatening physiological abnormality.
The client has severe hyperkalemia (7.6 mEq/L7.6\text{ mEq/L}) accompanied by significant ECG changes (widened QRS, peaked T waves).
Recognizing impending cardiac arrest dictates the immediate need for myocardial stabilization over potassium reduction.
2
Select the intervention for immediate myocardial stabilization.
Intravenous calcium gluconate is administered first.
Calcium directly antagonizes the membrane effects of hyperkalemia. Without it, the client is at imminent risk for ventricular fibrillation.
3
Select the intervention for rapid intracellular potassium shifting.
Intravenous regular insulin and 50%50\% dextrose are administered second.
This quickly lowers the serum potassium level temporarily, buying time for permanent elimination therapies to take effect.
4
Select the intervention for total body potassium elimination.
Oral sodium polystyrene sulfonate is administered third.
This permanently removes potassium from the body via the gastrointestinal tract but has a delayed onset of action (hours).
5
Select the evaluation step.
A follow-up serum potassium level is drawn last.
After administering all acute emergency treatments, the nurse must assess the therapeutic response.

Anahtar Kavram

In the setting of severe hyperkalemia with electrocardiographic changes, myocardial stabilization with intravenous calcium is the absolute first priority, preceding any interventions designed to lower the serum potassium level.
Soru 663Soru →

A medical-surgical nurse is monitoring a client who is undergoing conservative management for severe acute pancreatitis. The client is increasingly restless and reports persistent, agonizing pain in the left upper quadrant. Which subsequent assessment finding represents the highest priority and warrants immediate provider notification?

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Cevap: A current blood pressure of 102/84 mmHg, compared to a baseline of 128/78 mmHg, along with a heart rate of 118 beats per minute.

Cevap

The priority finding is the narrowing pulse pressure (102/84 mmHg) and tachycardia (118 bpm), which indicate impending hypovolemic shock.
Acute pancreatitis can cause severe retroperitoneal fluid shifts (third-spacing), leading to profound hypovolemia. A narrowing pulse pressure (the difference between systolic and diastolic pressure) coupled with tachycardia is a classic, early hallmark of compensatory shock. A baseline of 128/78 mmHg has a pulse pressure of 50 mmHg, whereas 102/84 mmHg has a narrowed pulse pressure of 18 mmHg. This represents a critical decrease in stroke volume that requires immediate fluid resuscitation to prevent irreversible circulatory collapse.

Adım Adım Çözüm

1
Analyze the client's underlying condition and associated risks.
The client has severe acute pancreatitis, which carries a high risk for massive fluid shifts (third-spacing) into the retroperitoneal cavity, potentially leading to hypovolemia.
Identifying condition-specific risks helps the nurse anticipate life-threatening complications before profound decompensation occurs.
2
Evaluate the clinical significance of each assessment finding.
The vital signs show a drop in systolic pressure and a rise in diastolic pressure, creating a narrow pulse pressure of 18 mmHg. Combined with tachycardia, this reflects decreased stroke volume and a compensatory sympathetic nervous system response.
Early detection of subtle hemodynamic trends is critical for recognizing the compensatory stage of shock.
3
Prioritize the findings based on immediate threat to life (ABCs).
While the ABG shows mild respiratory acidosis and the enzymes remain high, these are expected or less acute issues. The hemodynamic instability (shock) poses the most immediate threat to circulation and tissue perfusion.
Using the ABC (Airway, Breathing, Circulation) framework ensures that life-threatening issues are addressed before expected or chronic findings.

Anahtar Kavram

Early recognition of hypovolemic shock in acute pancreatitis involves identifying subtle vital sign changes, such as a narrowing pulse pressure and mild tachycardia, caused by massive retroperitoneal fluid sequestration.
Tahmini Süre:1m 15s
Soru 664Soru →

A client receiving care on an oncology unit has a newly inserted multi-lumen central venous catheter (CVC) for the administration of chemotherapy and total parenteral nutrition. The nurse is preparing to administer several prescribed intravenous medications. Which of the following actions indicate correct understanding of central line and parenteral therapy safety? Select all that apply.

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Cevap: Use a syringe size of 10 mL10 \text{ mL} or larger when flushing the catheter lumens.; Aspirate the line to verify a brisk blood return prior to the administration of any intravenous vesicant medication.; Scrub the needleless connector hub with an approved antiseptic for at least 15 seconds and allow it to dry before accessing.

Cevap

The correct actions include using a 10 mL10 \text{ mL} or larger syringe for flushing, aspirating for blood return before giving vesicants, and scrubbing the hub for at least 15 seconds before access.
The correct actions ensure patient safety during central line use. A 10 mL10 \text{ mL} or larger syringe must be used because smaller syringes exert excessive pressure that can rupture the central venous catheter. Aspirating for blood return is a critical step prior to administering any vesicant to confirm the catheter tip is properly placed in the vein, thus preventing severe extravasation injury. Scrubbing the needleless hub with an antiseptic for at least 15 seconds creates mechanical friction that significantly reduces the risk of central line-associated bloodstream infections (CLABSI).

Adım Adım Çözüm

1
Evaluate the requirement for syringe size when flushing a central line.
Syringes smaller than 10 mL10 \text{ mL} generate too much pressure.
High pressure can cause catheter rupture or dislodgment.
2
Determine the appropriate scope of practice for assessing the insertion site.
Assessment requires clinical judgment.
Assessment cannot be delegated to unlicensed assistive personnel (UAP).
3
Review the protocol for administering vesicant medications.
Blood return must be verified.
Ensuring the catheter is correctly situated in the vein prevents severe tissue damage from extravasation.
4
Analyze the rules for medication compatibility.
Incompatible medications cannot be mixed.
Administering them in the same lumen, regardless of speed, can cause dangerous precipitates to form.
5
Identify infection control standards for accessing a central line.
The hub must be scrubbed thoroughly.
Friction and antiseptic application for at least 15 seconds prevent central line-associated bloodstream infections (CLABSI).
6
Establish the correct emergency positioning for a suspected air embolism.
The client should be placed in the left lateral Trendelenburg position.
High Fowler's position would exacerbate the issue; the left lateral Trendelenburg position helps trap air in the right atrium and prevents it from entering the pulmonary circulation.

Anahtar Kavram

Central Venous Catheter Safety and Parenteral Administration Protocols
Soru 665Soru →

A nurse is preparing to discontinue a non-tunneled central venous catheter (CVC) located in the right subclavian vein of a 68-year-old client who has completed a course of intravenous antibiotics for osteomyelitis. To strictly reduce the risk of a life-threatening physiological complication during this procedure, in what order should the nurse perform the following actions? Arrange the steps from first to last.

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Cevap

The correct sequence is to position the client flat, remove the dressing, instruct the Valsalva maneuver, withdraw the catheter, and immediately apply pressure.
Removing a central venous catheter carries a high risk of air embolism. The procedure must be precisely sequenced to maximize intrathoracic and central venous pressure before the catheter is withdrawn. Positioning the client flat or in Trendelenburg must occur first to raise central venous pressure. Only then should the nurse remove the dressing to prepare the site. Immediately before pulling the catheter, the client performs the Valsalva maneuver to further spike intrathoracic pressure. The catheter is then swiftly removed during this maneuver, followed by the immediate application of firm pressure to seal the tract.

Adım Adım Çözüm

1
Position the client in a flat, supine or Trendelenburg position.
Central venous pressure is increased in the upper body.
This creates a positive pressure gradient that is the fundamental baseline requirement to reduce the risk of an air embolism.
2
Remove the existing transparent dressing while stabilizing the catheter.
The insertion site is safely exposed.
Performing this step after positioning ensures the client is already hemodynamically safe in the event of accidental catheter dislodgement during dressing removal.
3
Instruct the client to take a deep inhalation, hold it, and bear down.
Intrathoracic pressure is acutely elevated.
The Valsalva maneuver strictly prevents air entry into the venous system during the high-risk moment when the vein communicates with the atmosphere.
4
Withdraw the catheter completely in a swift, continuous motion.
The catheter is removed from the vascular space.
Swift removal during the Valsalva maneuver minimizes the duration the venous tract remains open.
5
Apply immediate firm pressure to the site with sterile gauze.
Hemostasis is achieved and air tracking is prevented.
Direct pressure physically blocks air from entering the venous tract and controls bleeding until an occlusive dressing is applied.

Anahtar Kavram

Central Venous Catheter Discontinuation and Air Embolism Prevention
Soru 666Soru →

A nurse is assessing a client who was admitted 6 hours ago with severe acute pancreatitis. The client has become increasingly restless. Which of the following assessment findings indicate severe physiological decompensation requiring immediate intervention? Select all that apply.

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Cevap: Blood pressure change from 122/78 mm Hg to 94/76 mm Hg; Arterial blood gas values of pH 7.28, PaCO2 54 mm Hg, and PaO2 58 mm Hg; Hourly urine output of 15 mL over the past two hours

Cevap

The correct findings are the narrowing pulse pressure, the arterial blood gas showing respiratory acidosis with hypoxemia, and the decreased hourly urine output.
Severe acute pancreatitis leads to massive retroperitoneal fluid shifts (third-spacing), resulting in severe hypovolemia and decreased systemic perfusion. A narrowing pulse pressure and oliguria (urine output less than 30 mL/hr) are critical early indicators of compensatory hypovolemic shock. Additionally, the release of systemic inflammatory mediators can trigger Acute Respiratory Distress Syndrome (ARDS), which is evidenced by uncompensated respiratory acidosis (pH < 7.35, PaCO2 > 45) and severe hypoxemia (PaO2 < 60). These three findings demand immediate life-saving interventions.

Adım Adım Çözüm

1
Analyze the client's condition and pathophysiology.
Severe acute pancreatitis causes massive systemic inflammation and retroperitoneal fluid shifts (third-spacing).
Understanding the disease process helps predict potential life-threatening complications, primarily hypovolemic shock and Acute Respiratory Distress Syndrome (ARDS).
2
Evaluate cardiovascular and renal assessment findings.
The blood pressure shows a narrowing pulse pressure (from 44 to 18 mm Hg), and the urine output is oliguric (15 mL/hr).
A narrowing pulse pressure and decreased urine output are classic early signs of compensatory hypovolemic shock and inadequate organ perfusion.
3
Evaluate respiratory and laboratory findings.
One ABG shows pH 7.28, PaCO2 54, and PaO2 58. The other shows pH 7.48, PaCO2 32.
The first ABG indicates severe respiratory acidosis and hypoxemia (ARDS), requiring immediate intervention. The second is an expected respiratory alkalosis resulting from pain and anxiety.
4
Evaluate the remaining assessment data.
Temperature is 38.3°C, and skin is described as warm and flushed with bounding pulses.
Fever is an expected inflammatory response. Warm/flushed skin is a sign of early septic shock, which conflicts with the expected hypovolemic presentation caused by third-spacing.

Anahtar Kavram

Early recognition of hypovolemic shock (third-spacing) and Acute Respiratory Distress Syndrome (ARDS) in acute pancreatitis.
Soru 667Soru →

A nurse is preparing to administer an intermittent intravenous (IV) piggyback medication using the backpriming method through an existing continuous primary IV infusion. Assuming hand hygiene and medication verification have been completed, place the following steps in the correct sequence for setting up the IV piggyback.

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Cevap

The correct sequence is: 1) Close the clamp and spike the bag, 2) Scrub the primary port, 3) Attach and lower the secondary bag, 4) Open the clamp to backprime, and 5) Close the clamp, hang the bag, and program the pump.
The correct sequence ensures patient safety, maintains asepsis, and prevents medication waste. By closing the clamp before spiking, the system remains closed. Scrubbing the hub is a mandatory aseptic step before any connection. Lowering the secondary bag below the primary bag creates the necessary hydrostatic pressure gradient. When the clamp is opened, the primary fluid flows backward, clearing air from the secondary line without wasting medication. Finally, closing the clamp and hanging the bag high allows the medication to infuse first when the pump is programmed.

Adım Adım Çözüm

1
Close the roller clamp on the secondary IV tubing and spike the secondary medication bag.
The medication is secured in a closed system.
Closing the clamp prevents medication waste and air entry during spiking.
2
Scrub the needleless connector on the primary IV tubing located above the infusion pump.
The Y-site is disinfected.
Strict aseptic technique is required to prevent catheter-related bloodstream infections.
3
Attach the secondary IV tubing to the cleansed primary port and lower the secondary bag below the primary fluid bag.
The secondary set is connected and positioned for gravity backflow.
Lowering the secondary bag creates hydrostatic pressure that allows primary fluid to flow backward into the secondary line.
4
Open the secondary roller clamp to allow primary IV fluid to flow backward into the secondary tubing until the drip chamber is half full.
The secondary tubing and drip chamber fill with primary fluid.
Backpriming displaces air in the secondary tubing without losing any of the ordered medication.
5
Close the secondary roller clamp, hang the secondary bag higher than the primary bag, and program the infusion pump.
The IV piggyback is ready to infuse.
Hanging the secondary bag higher ensures it will infuse first, and programming the pump ensures the correct administration rate.

Anahtar Kavram

Intravenous Piggyback (IVPB) Backpriming Procedure
Tahmini Süre:1m 30s
Soru 668Soru →

A nurse is conducting serial assessments on a client who sustained blunt abdominal trauma three hours ago. The client's initial vital signs and physical assessments were within normal limits. Based on the understanding of hemodynamic compensatory mechanisms, which of the following physiological changes should the nurse identify as the earliest indicator that the client is developing hemorrhagic shock?

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Cevap: A progressive elevation in the diastolic blood pressure while the systolic pressure remains stable

Cevap

The earliest indicator is a progressive elevation in the diastolic blood pressure while the systolic pressure remains stable.
The correct answer is a progressive elevation in the diastolic blood pressure. During the early compensatory stage of hemorrhagic shock, the sympathetic nervous system is stimulated in response to decreased cardiac output. This causes peripheral vasoconstriction, which primarily raises the diastolic blood pressure. Because the systolic pressure is temporarily maintained by an increased heart rate, the difference between the two (the pulse pressure) narrows. This narrowing is one of the most sensitive and earliest hemodynamic indicators of volume loss.

Adım Adım Çözüm

1
Analyze the client's clinical scenario.
The client has sustained blunt abdominal trauma and is at high risk for internal bleeding leading to hemorrhagic (hypovolemic) shock.
Identifying the primary risk factor helps anticipate expected physiological complications.
2
Recall the physiological mechanisms of early shock.
In the initial stages of blood volume loss, the body compensates by activating the sympathetic nervous system, leading to peripheral vasoconstriction and increased heart rate to maintain cardiac output.
Understanding compensatory physiology is necessary to recognize the earliest clinical manifestations of shock.
3
Evaluate the assessment findings against early compensatory signs.
Peripheral vasoconstriction increases systemic vascular resistance, which elevates the diastolic blood pressure. This narrows the pulse pressure before the systolic blood pressure begins to drop.
This subtle hemodynamic change occurs prior to overt signs of decompensation.
4
Differentiate early signs from late signs or expected local findings.
Hypotension and metabolic acidosis are late signs of decompensation, while localized guarding is an expected injury-specific finding rather than a systemic hemodynamic indicator.
Eliminating late or unrelated findings confirms the correct early indicator.

Anahtar Kavram

Early compensatory mechanisms in hemorrhagic shock primarily involve sympathetic nervous system activation, which causes peripheral vasoconstriction and elevates diastolic blood pressure, leading to a narrowing pulse pressure before frank hypotension occurs.
Soru 669Soru →

Following a percutaneous liver biopsy, a client rests on their right side. As the nurse monitors the client for potential complications, which vital sign change provides the earliest indication of internal hemorrhage?

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Cevap: Heart rate increases from 74 to 108 beats per minute

Cevap

An increase in heart rate (tachycardia) is typically the earliest vital sign change indicating internal hemorrhage.
An unexplained increase in heart rate (tachycardia) is typically the earliest physiological sign of bleeding and hypovolemia. The sympathetic nervous system triggers this response to maintain cardiac output and tissue perfusion despite a falling blood volume.

Adım Adım Çözüm

1
Identify the primary complication risk associated with a percutaneous liver biopsy.
The liver is highly vascular, making internal hemorrhage a significant post-procedure risk.
Understanding the procedural risks guides targeted assessment.
2
Recall the body's immediate physiological adaptation to acute blood loss.
The sympathetic nervous system activates, causing an immediate increase in heart rate.
This mechanism aims to maintain cardiac output and tissue perfusion despite a drop in circulating blood volume.
3
Differentiate between early and late signs of hemorrhagic shock.
Tachycardia is an early compensatory sign, whereas hypotension and altered oxygenation are later signs that occur when compensation fails.
Prioritizing early recognition allows for timely, life-saving interventions before the client decompensates.

Anahtar Kavram

Early recognition of hemorrhagic shock
Tahmini Süre:45s
Soru 670Soru →

A nurse is caring for a client who recently experienced a right-hemisphere ischemic stroke. The client has developed left-sided hemiplegia, left homonymous hemianopsia, and mild dysphagia. Which of the following basic care interventions should the nurse implement during mealtime?

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Cevap: Arrange all food items and eating utensils on the right side of the client's overbed table.

Cevap

Arrange all food items and eating utensils on the right side of the client's overbed table.
A right-hemisphere ischemic stroke frequently results in left homonymous hemianopsia, which is the loss of the left half of the visual field in both eyes. By deliberately placing the meal tray, food items, and utensils on the client's right side, the nurse ensures that all items fall within the client's intact visual field. This intervention prevents unilateral neglect, promotes client independence, and facilitates adequate nutritional intake.

Adım Adım Çözüm

1
Analyze the specific neurological deficits resulting from a right-hemisphere stroke.
The client experiences left-sided hemiplegia (weakness) and left homonymous hemianopsia (loss of the left visual field in both eyes).
Identifying the affected side is crucial for determining how to position the client's environment and food.
2
Determine the impact of left homonymous hemianopsia on basic care and nutrition.
The client cannot see objects placed on their left side, leading to a high risk of unilateral neglect where they may ignore half of their meal.
Interventions must compensate for the visual deficit to promote independence and adequate nutritional intake.
3
Identify the appropriate environmental adaptation for this visual deficit.
Food, beverages, and utensils must be placed within the intact right visual field so the client can clearly see and access them.
This directly addresses the sensory deficit and ensures safe, independent feeding.
4
Evaluate the distractors regarding dysphagia protocols and delegation rules.
Dysphagia requires a high-Fowler's position (90 degrees) and a chin-tuck swallowing technique. Additionally, the RN cannot delegate the initial feeding assessment to a UAP.
Ruling out unsafe positioning, improper swallowing mechanics, and out-of-scope delegation confirms the correct intervention.

Anahtar Kavram

Basic Care and Comfort for Stroke Clients (Nutrition, Positioning, and Safety)
Soru 671Soru →

While conducting hourly rounds on a surgical unit, a nurse encounters a client who is two days post-operative from an open bowel resection. The client is extremely restless, clutching their chest, and gasping for air. The bedside monitor displays a heart rate of 124 beats/minute, a respiratory rate of 32 breaths/minute, a blood pressure of 90/62 mm Hg, and an oxygen saturation of 84% on room air. The rapid response team is activated, and immediate arterial blood gas (ABG) results show a pH of 7.52, PaCO2 of 28 mm Hg, PaO2 of 54 mm Hg, and HCO3 of 23 mEq/L. Which of the following actions should the nurse execute first to mitigate the risk of cardiopulmonary arrest?

Cevabı ve açıklamayı göster

Cevap: Apply oxygen via a non-rebreather mask and elevate the head of the bed to a high-Fowler's position.

Cevap

The priority action is to apply oxygen via a non-rebreather mask and elevate the head of the bed to a high-Fowler's position.
The correct action directly addresses the client's most critical, life-threatening problem: severe hypoxemia and respiratory compromise (likely secondary to a pulmonary embolism). Utilizing the ABCs (Airway, Breathing, Circulation) framework, optimizing oxygen delivery via a non-rebreather mask and facilitating maximum lung expansion by elevating the head of the bed are the absolute highest priorities to prevent cardiopulmonary arrest.

Adım Adım Çözüm

1
Analyze the clinical presentation and vital signs.
The client is experiencing acute, severe respiratory distress, hypoxia (SpO2 84%), tachycardia, and chest pain, which are hallmark indicators of a potential pulmonary embolism.
Identifying the primary physiological failure guides immediate prioritization.
2
Interpret the arterial blood gas (ABG) values.
pH 7.52 (alkaline), PaCO2 28 mm Hg (low, respiratory origin), and HCO3 23 mEq/L (normal) indicate uncompensated respiratory alkalosis, accompanied by severe hypoxemia (PaO2 54 mm Hg).
Accurate ABG interpretation confirms the client is hyperventilating to compensate for profound hypoxia, ruling out acidosis.
3
Apply the ABC (Airway, Breathing, Circulation) prioritization framework.
The most critical, life-threatening deficit is oxygenation. Supplying high-flow oxygen and optimizing anatomical positioning for lung expansion (high-Fowler's) are the immediate required actions.
Airway and breathing interventions must always precede circulation interventions or further diagnostic assessments when a client is actively decompensating.

Anahtar Kavram

Prioritization of oxygenation and correct positioning for acute respiratory distress, coupled with accurate ABG interpretation.
Tahmini Süre:1m 30s
Soru 672Soru →

A nurse is managing the care of a client admitted with diabetic ketoacidosis. The client is receiving a continuous intravenous (IV) infusion of regular insulin through a single peripheral IV catheter. The healthcare provider prescribes an intermittent IV infusion of a broad-spectrum antibiotic for a concurrent infection. The nurse consults a drug compatibility reference and discovers the antibiotic is chemically incompatible with regular insulin at the Y-site. Which of the following actions is the most appropriate for the nurse to take?

Cevabı ve açıklamayı göster

Cevap: Insert a second peripheral intravenous catheter to administer the intermittent antibiotic infusion.

Cevap

Insert a second peripheral intravenous catheter to administer the intermittent antibiotic infusion.
Regular insulin is a critical continuous infusion for a client with diabetic ketoacidosis and must not be interrupted, as doing so can rapidly worsen the client's metabolic state. Because the prescribed antibiotic is incompatible with insulin, the two medications cannot share the same IV line, even with flushing, as the insulin must run continuously. Therefore, establishing a second peripheral IV catheter is the only safe and effective method to administer both therapies simultaneously.

Adım Adım Çözüm

1
Identify the nature of the primary infusion.
Regular insulin for diabetic ketoacidosis is a critical, continuous infusion that cannot be safely interrupted.
Maintaining steady blood insulin levels is required to reverse ketoacidosis; pausing the infusion risks metabolic deterioration.
2
Evaluate the compatibility of the prescribed secondary medication.
The prescribed antibiotic is chemically incompatible with the regular insulin infusion at the Y-site.
Mixing incompatible medications can cause crystallization or precipitation in the tubing.
3
Determine the safest administration strategy.
A new, separate peripheral IV catheter must be inserted.
Because the primary infusion cannot be paused for a flush-and-run approach, and the medications cannot mix, a dedicated secondary line is required.

Anahtar Kavram

Management of incompatible intravenous medications with continuous critical infusions
Soru 673Soru →

A healthcare provider prescribes a continuous intravenous dopamine infusion at 5 mcg/kg/min5\text{ mcg/kg/min} to support the blood pressure of a client in cardiogenic shock. The client's body weight is recorded as 176 lb176\text{ lb}. The medication is supplied in an intravenous bag containing 400 mg400\text{ mg} of dopamine mixed in 250 mL250\text{ mL} of 5% dextrose in water (D5W). At what rate, in mL/hr\text{mL/hr}, should the infusion pump be programmed? (Record your answer as a whole number)

Cevabı ve açıklamayı göster

Cevap: 15

Cevap

15
The correct rate of 15 mL/hr is achieved by converting the client's weight to kg (80 kg), calculating the hourly dose in mg (24 mg/hr), and dividing by the IV bag's concentration (1.6 mg/mL).

Adım Adım Çözüm

1
Convert the client's weight from pounds to kilograms.
176 lb÷2.2=80 kg176\text{ lb} \div 2.2 = 80\text{ kg}
The prescribed dose is based on the client's weight in kilograms.
2
Calculate the required dose per minute.
5 mcg/kg/min×80 kg=400 mcg/min5\text{ mcg/kg/min} \times 80\text{ kg} = 400\text{ mcg/min}
To determine the total micrograms of medication the client needs every minute.
3
Calculate the total dose required per hour.
400 mcg/min×60 min/hr=24,000 mcg/hr400\text{ mcg/min} \times 60\text{ min/hr} = 24,000\text{ mcg/hr}
Infusion pumps are programmed in fluid volume per hour, so the dose must be scaled to an hourly rate.
4
Convert the hourly dose from micrograms to milligrams.
24,000 mcg÷1000=24 mg/hr24,000\text{ mcg} \div 1000 = 24\text{ mg/hr}
The supplied medication in the IV bag is measured in milligrams.
5
Determine the medication concentration in the supplied IV bag.
400 mg÷250 mL=1.6 mg/mL400\text{ mg} \div 250\text{ mL} = 1.6\text{ mg/mL}
To know how many milligrams of dopamine are contained in each milliliter of the solution.
6
Calculate the required volume to be infused per hour.
24 mg/hr÷1.6 mg/mL=15 mL/hr24\text{ mg/hr} \div 1.6\text{ mg/mL} = 15\text{ mL/hr}
To determine the final setting for the infusion pump in mL/hr.

Anahtar Kavram

Weight-based intravenous continuous infusion rate calculation
Soru 674Soru →

A nurse is evaluating a client who was admitted following a severe pelvic crush injury. Which of the following assessment findings should the nurse identify as indicators that the client is in the early (compensatory) stage of hypovolemic shock? Select all that apply.

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: A change in blood pressure from 124/76 mm Hg to 112/84 mm Hg; Unexplained restlessness and mild agitation; Arterial blood gas results showing pH 7.48, PaCO2 30 mm Hg, and HCO3 22 mEq/L

Cevap

The correct assessment findings are a narrowing pulse pressure (blood pressure changing to 112/84 mm Hg), unexplained restlessness and mild agitation, and an arterial blood gas showing respiratory alkalosis (pH 7.48).
During the early (compensatory) stage of hypovolemic shock, the body activates the sympathetic nervous system. This causes peripheral vasoconstriction, which increases diastolic blood pressure and creates a narrowed pulse pressure. Mild cerebral hypoxia presents as restlessness or agitation. Additionally, a compensatory increase in respiratory rate leads to the blowing off of carbon dioxide, resulting in respiratory alkalosis.

Adım Adım Çözüm

1
Analyze the physiological changes that occur during the early (compensatory) stage of shock.
The body activates the sympathetic nervous system to maintain cardiac output and tissue perfusion in response to a drop in effective circulating volume.
Understanding the timeline of shock stages is necessary to differentiate early compensatory signs from late progressive signs.
2
Evaluate the hemodynamic and neurological options.
A narrowing pulse pressure (from 48 mm Hg to 28 mm Hg) and mild restlessness indicate early compensatory vasoconstriction and initial cerebral hypoxia. A MAP of 56 mm Hg indicates failure of compensation.
The sympathetic response increases diastolic pressure before systolic pressure falls significantly, while early hypoxia affects the sensitive cerebral cortex first.
3
Evaluate the arterial blood gas (ABG) options.
Tachypnea in early shock causes respiratory alkalosis. Metabolic acidosis occurs later in the progressive stage.
The initial respiratory response to stress and hypoxia blows off CO2, whereas anaerobic metabolism is a later consequence of prolonged hypoperfusion.

Anahtar Kavram

Early (Compensatory) Stage of Shock
Soru 675Soru →

A nurse evaluates a client with a history of hepatic cirrhosis who is being monitored for a suspected gastrointestinal bleed. The client is alert but frequently shifts positions in bed and appears restless. The current vital signs are: blood pressure 114/86114/86 mm Hg (admission baseline 134/74134/74 mm Hg), heart rate 112112 beats/min, and respiratory rate 2222 breaths/min. The client repeatedly complains of severe thirst. Which action should the nurse take first?

Cevabı ve açıklamayı göster

Cevap: Initiate continuous pulse oximetry and establish large-bore intravenous access.

Cevap

Initiate continuous pulse oximetry and establish large-bore intravenous access.
The client is exhibiting early compensatory signs of hypovolemic shock secondary to a suspected gastrointestinal bleed. These indicators include a narrowing pulse pressure (a drop from a baseline of 6060 mm Hg down to 2828 mm Hg), tachycardia, mild tachypnea, severe thirst, and restlessness (an early sign of cerebral hypoxia). The priority nursing action according to the ABC (Airway, Breathing, Circulation) framework is to secure oxygenation monitoring and establish large-bore intravenous access to prepare for rapid fluid and blood product administration.

Adım Adım Çözüm

1
Analyze the client's current clinical presentation compared to baseline.
The client has a narrowing pulse pressure (decreased from 6060 mm Hg to 2828 mm Hg), tachycardia (112112 beats/min), tachypnea (2222 breaths/min), restlessness, and severe thirst.
Identifying trends in vital signs and recognizing new symptoms is critical for detecting physiological deterioration.
2
Correlate the findings with the client's risk factors.
The client has a history of cirrhosis and suspected gastrointestinal bleeding, making hypovolemia/hemorrhage the most likely cause of these symptoms.
Understanding the underlying pathology provides context for the compensatory mechanisms being observed.
3
Determine the priority nursing intervention based on ABCs (Airway, Breathing, Circulation).
The most urgent need is to manage potential hypoxia and impending circulatory collapse by preparing for aggressive fluid and blood product resuscitation.
Prioritization frameworks dictate that physiological stability and perfusion take precedence over comfort, routine reassessment, or symptom-masking.

Anahtar Kavram

Early indicators of hypovolemic shock include a narrowing pulse pressure, tachycardia, and altered mental status (restlessness), requiring immediate circulatory support.
Soru 676Soru →

A nurse is preparing a client with ascites for a bedside abdominal paracentesis. In which order should the nurse perform the following actions to ensure the client's safety and reduce the risk of physiological complications? Arrange the actions in the correct chronological sequence.

Öğeleri doğru sıraya koymak için sürükleyin

Cevabı ve açıklamayı göster

Cevap

The correct sequence is to first verify informed consent, then instruct the client to void, followed by obtaining baseline measurements, and finally positioning the client upright for the procedure.
Preparing a client for a paracentesis requires a deliberate, sequential approach focused on risk reduction. First, the nurse must ensure legal consent is obtained. Next, instructing the client to void is the most critical physiological safety step to prevent accidental bladder injury. Once the bladder is empty, accurate baselines (vital signs, dry weight, abdominal girth) are recorded to later assess fluid shifts and signs of hemodynamic instability. Finally, positioning the client upright uses gravity to safely pool fluid in the lower abdomen, keeping floating bowel loops and the decompressed bladder away from the insertion site.

Adım Adım Çözüm

1
Verify informed consent
Legal requirements and client understanding are confirmed.
Consent must be verified before any procedure-specific physical preparation begins.
2
Instruct the client to void
The bladder is fully decompressed.
An empty bladder minimizes the physiological risk of an iatrogenic bladder puncture when the trocar is inserted into the abdomen.
3
Obtain baseline measurements
Vital signs, dry weight, and abdominal girth are recorded.
Baselines taken after voiding provide accurate clinical data to evaluate the volume of fluid removed and to monitor for post-procedure hypovolemic shock.
4
Position the client upright
Ascitic fluid pools in the dependent areas of the abdomen.
An upright position uses gravity to concentrate fluid safely away from major abdominal organs, reducing the risk of accidental bowel perforation.

Anahtar Kavram

Prioritization of safety and risk reduction interventions during preparation for an invasive procedure (paracentesis).
Soru 677Soru →

During a routine assessment of a client who underwent a right-sided thoracentesis 45 minutes ago, the nurse notes several clinical changes. Which observation represents the highest priority for immediate provider notification and intervention?

Cevabı ve açıklamayı göster

Cevap: The client exhibits asymmetrical chest wall movement and new-onset tracheal deviation to the left.

Cevap

The observation of asymmetrical chest wall movement and tracheal deviation to the left indicates a tension pneumothorax and requires immediate intervention.
A tension pneumothorax occurs when air enters the pleural space but cannot escape, causing increasing intrathoracic pressure. This rapidly collapses the affected lung (indicated by asymmetrical chest movement) and pushes mediastinal structures, including the trachea, to the opposite, unaffected side. This is a life-threatening emergency requiring immediate needle decompression or chest tube insertion.

Adım Adım Çözüm

1
Analyze the procedure and its potential physiological complications.
Thoracentesis involves needle insertion into the pleural space, carrying a high risk of puncturing the lung parenchyma and causing a pneumothorax.
Identifying procedure-specific risks is essential for focused and accurate post-procedure assessment.
2
Evaluate the clinical findings in the options against known life-threatening complications.
Asymmetrical chest movement and contralateral tracheal deviation are classic signs of a tension pneumothorax, which is a medical emergency.
Early recognition of tension pneumothorax prevents cardiopulmonary arrest.
3
Differentiate expected outcomes and normal findings from pathological changes.
Mild pain and normal ABG values are expected. Lying on the unaffected side is a correct therapeutic intervention.
Eliminating expected findings or correct interventions isolates the true pathological emergency requiring action.

Anahtar Kavram

Early recognition of a tension pneumothorax following a thoracentesis is a critical risk reduction skill.
Soru 678Soru →

A nurse is caring for a client who is receiving an initial intravenous dose of ceftriaxone for a severe respiratory infection. Ten minutes after the infusion begins, the client develops sudden wheezing, facial swelling, and reports a feeling of impending doom. Which of the following nursing actions are appropriate? (Select all that apply.)

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Stop the ceftriaxone infusion immediately.; Attach new intravenous tubing primed with 0.9% sodium chloride to the catheter hub.; Prepare to administer intramuscular epinephrine.

Cevap

The correct actions are to stop the ceftriaxone infusion immediately, attach new intravenous tubing primed with 0.9% sodium chloride, and prepare to administer intramuscular epinephrine.
Anaphylaxis is a severe, life-threatening hypersensitivity reaction. The absolute first priority is to stop the offending medication. Following this, the nurse must maintain intravenous access using new tubing (to avoid pushing remaining antibiotic into the client) and prepare to administer epinephrine, which is the first-line medication for reversing anaphylactic shock.

Adım Adım Çözüm

1
Analyze the client's sudden onset of symptoms (wheezing, facial swelling, impending doom).
Identify these manifestations as classic signs of a severe, life-threatening anaphylactic reaction.
Early recognition of anaphylactic shock dictates the speed and direction of emergency nursing interventions.
2
Determine the first priority action regarding the intravenous therapy.
Stop the ceftriaxone infusion immediately.
Stopping the infusion prevents further exposure to the allergen triggering the anaphylactic cascade.
3
Determine how to safely maintain intravenous access.
Change the IV tubing and attach new tubing primed with normal saline at the catheter hub.
Intravenous access is vital for emergency drugs, but flushing the existing tubing would push the remaining antibiotic allergen into the client's circulation.
4
Identify the primary pharmacological intervention for anaphylaxis.
Prepare to administer intramuscular epinephrine.
Epinephrine is the first-line medication required to reverse the life-threatening bronchoconstriction and vasodilation of anaphylaxis.

Anahtar Kavram

Management of Anaphylactic Shock During Parenteral Therapy
Soru 679Soru →

While caring for a client with a continuous intravenous (IV) infusion of normal saline, the nurse receives a new prescription for an IV push analgesic. Which action is the most critical for the nurse to perform before injecting the medication into the existing IV line?

Cevabı ve açıklamayı göster

Cevap: Verify the compatibility of the analgesic with the continuous normal saline infusion.

Cevap

The most critical action is to verify the compatibility of the analgesic with the continuous normal saline infusion.
Before administering any intravenous medication through an existing continuous IV line, it is a fundamental safety requirement to verify that the medication is compatible with the infusing fluid. Incompatible solutions can form precipitates, inactivate the medication, or cause life-threatening emboli in the client's bloodstream.

Adım Adım Çözüm

1
Identify the route of administration and the existing setup.
The prescribed medication is an IV push intended for an active IV line running normal saline.
Understanding the current IV setup is necessary to identify potential chemical or physical interactions.
2
Determine the safety requirements for administering multiple IV substances simultaneously.
The nurse must ensure that the new medication and the continuous IV fluid will not adversely react with each other.
Mixing incompatible medications in the IV line can lead to precipitation, drug inactivation, or severe adverse client reactions.
3
Select the appropriate priority action.
Verifying compatibility is chosen as the first and most critical step before administration.
This action directly prevents the administration of incompatible substances, ensuring client safety.

Anahtar Kavram

Safe Intravenous (IV) Medication Administration and Compatibility
Tahmini Süre:45s
Soru 680Soru →

A nurse is caring for a client who is in the immediate postoperative period following a total thyroidectomy. Which of the following actions should the nurse take to reduce the risk of complications? (Select all that apply.)

Geçerli olan tümünü seçin

Cevabı ve açıklamayı göster

Cevap: Elevate the head of the bed to a semi-Fowler's position.; Ensure that suction equipment and a tracheostomy tray are immediately available at the bedside.; Support the client's head and neck with pillows to minimize tension on the suture line.

Cevap

The correct actions are elevating the head of the bed to a semi-Fowler's position, ensuring emergency airway equipment is at the bedside, and supporting the head and neck with pillows.
Following a thyroidectomy, it is critical to reduce the risk of airway compromise and bleeding. Elevating the head of the bed to a semi-Fowler's position reduces edema at the surgical site and facilitates breathing. Supporting the head and neck with pillows prevents hyperextension and minimizes tension on the suture line. Ensuring that suction equipment and a tracheostomy tray are readily available at the bedside is an essential safety measure in case of sudden airway obstruction from a hematoma or laryngeal edema.

Adım Adım Çözüm

1
Identify the client's specific postoperative risks.
The client is at high risk for airway obstruction, hemorrhage, and tension on the surgical incision following a thyroidectomy.
Understanding specific complications guides appropriate preventative nursing interventions.
2
Evaluate positioning interventions.
A semi-Fowler's position with head and neck support is indicated to promote drainage and protect the airway, whereas a flat position is contraindicated.
Proper positioning reduces surgical site edema and prevents hyperextension, which protects both the airway and the suture line.
3
Determine appropriate monitoring and safety equipment.
A tracheostomy tray and suction must be at the bedside, and the nurse must accurately monitor for early signs of hemorrhage, such as tachycardia.
Immediate availability of emergency equipment and accurate recognition of early shock signs are crucial for reducing the risk of life-threatening complications.

Anahtar Kavram

Postoperative risk reduction for a thyroidectomy involves maintaining airway patency, utilizing proper positioning to minimize edema and incisional tension, and monitoring for early signs of hemorrhage.
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