A postoperative client is admitted to the intensive care unit (ICU) with an inflated pressure infuser containing a solution of heparin 2 units/ml attached to an intra-arterial (IA) cannula. Which finding indicates that the heparin infusion has achieved its therapeutic use?

Heparin is infused in less than four hours.

Systolic blood pressure greater than 120 mm Hg.

No knee pain upon forced dorsiflexion.

Intra-arterial cannula remains patent.

Answer and Explanation

The Correct Answer is D

A. Heparin is infused in less than four hours. The heparinized solution used in an intra-arterial (IA) pressure infuser is not intended for systemic anticoagulation but rather to maintain catheter patency. The infusion rate is typically slow and continuous, and completing the infusion in less than four hours is not an indicator of effectiveness.
B. Systolic blood pressure greater than 120 mm Hg. Heparin in an IA pressure infuser does not directly affect blood pressure. Its purpose is to prevent clot formation within the catheter, ensuring uninterrupted arterial pressure monitoring. BP readings are monitored separately and are not an indicator of heparin’s therapeutic effect.
C. No knee pain upon forced dorsiflexion. This assessment is used to evaluate deep vein thrombosis (DVT) (Homan's sign), which is not related to arterial catheter function. The low-dose heparin in the pressure infuser does not provide systemic anticoagulation, making this finding irrelevant.
D. Intra-arterial cannula remains patent. The primary purpose of heparinized flush solutions in IA lines is to prevent clot formation within the catheter and maintain patency for continuous blood pressure monitoring or arterial blood sampling. A patent arterial line confirms that the heparin infusion is achieving its intended effect.

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Correct Answer is D

Explanation

A. Hyperglycemia. While elevated blood glucose can occur in acute pancreatitis due to pancreatic inflammation impairing insulin secretion, it is not an electrolyte imbalance. The question specifically asks about electrolyte-related manifestations.
B. Hypotension. Hypotension in acute pancreatitis is often due to fluid shifts (third-spacing) and systemic inflammation, rather than a direct electrolyte imbalance. Though dehydration and electrolyte losses can contribute to hypotension, this is not the most specific sign of an electrolyte disturbance.
C. Paralytic ileus and abdominal distention. Hypokalemia can lead to paralytic ileus, but ileus and distention are also caused by peritoneal irritation, inflammation, and impaired motility due to pancreatitis itself. While potassium imbalance could contribute, this is not the most direct electrolyte-related symptom.
D. Muscle twitching and digit numbness. Hypocalcemia is a common electrolyte imbalance in acute pancreatitis, caused by fatty acid breakdown binding calcium, leading to saponification. This results in neuromuscular excitability, causing muscle twitching, paresthesia (numbness/tingling), and positive Chvostek’s or Trousseau’s signs. These symptoms are clear indicators of an electrolyte disturbance related to pancreatitis.

A. Respirations are shallow, labored, and 14 breaths/minute. B. Has flaccid upper and lower extremities. C. Blood pressure is 110/70 mm Hg and the apical heart rate is 68 beats/minute. D. Is unable to feel sensation in the arms and hands.

Correct Answer is A

Explanation

A. Respirations are shallow, labored, and 14 breaths/minute. A C5 spinal cord injury can impair diaphragmatic function and respiratory effort, leading to respiratory failure. Shallow and labored breathing suggests that the client is experiencing respiratory compromise, which can quickly progress to hypoventilation, hypoxia, and respiratory arrest. Immediate intervention, such as assisted ventilation or intubation, may be necessary to maintain adequate oxygenation and prevent further complications.
B. Has flaccid upper and lower extremities. Flaccid paralysis is an expected finding immediately after a high spinal cord injury due to spinal shock. While this condition requires ongoing monitoring, it is not an immediate life-threatening emergency like respiratory distress.
C. Blood pressure is 110/70 mm Hg and the apical heart rate is 68 beats/minute. These vital signs are within normal limits and do not indicate hemodynamic instability. Neurogenic shock, which can occur with high spinal injuries, typically presents with hypotension and bradycardia, but this client’s current BP and HR are stable.
D. Is unable to feel sensation in the arms and hands. Loss of sensation is expected with a cervical spinal cord injury due to nerve pathway disruption. While this finding is significant, it does not require immediate intervention compared to respiratory distress, which is the most urgent priority.

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A postoperative client is admitted to the intensive care unit (ICU) with an inflated pressure infuser containing a solution of heparin 2 units/ml attached to an intra-arterial (IA) cannula. Which finding indicates that the heparin infusion has achieved its therapeutic use?

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Naxlex Comprehensive Predictor Exams

The nurse identifies the collaborative problem of potential electrolyte imbalance in a client with acute pancreatitis. Which assessment finding should the nurse associate with an electrolyte imbalance related to acute pancreatitis?

Correct Answer is D

Explanation

A client is admitted to the neurological intensive care unit after having just sustained a C5 spinal cord injury (SCI). Which assessment finding for this client warrants immediate intervention by the nurse?

Correct Answer is A

Explanation

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