the nurse is preparing to administer heparin to a client what lab value should be monitored the nurse is preparing to administer heparin to a client what lab value should be monitored
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Nursing Elites

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Cardiovascular System Exam Questions And Answers

1. The healthcare provider is preparing to administer heparin to a client. What lab value should be monitored?

Correct answer: B

Rationale: The correct lab value that should be monitored when administering heparin is the aPTT (activated partial thromboplastin time). Heparin affects the intrinsic pathway of the coagulation cascade, and aPTT is a sensitive measure to assess the effectiveness of heparin therapy. Monitoring aPTT helps in adjusting the heparin dose to maintain the desired anticoagulant effect. PT/INR is more specific to monitor warfarin therapy, not heparin. Platelet count and hemoglobin levels are important parameters to assess bleeding tendencies and oxygen-carrying capacity but are not directly related to monitoring heparin therapy.

2. A nurse is reviewing the plan of care for a client who is in the manic phase of bipolar disorder. Which of the following interventions should the nurse expect to include?

Correct answer: C

Rationale: Providing high-calorie snacks is essential when caring for a client in the manic phase of bipolar disorder because they often have increased energy expenditure and may not eat adequately due to their heightened activity levels. Encouraging group activities (Choice A) may overwhelm the client further during this phase. Encouraging frequent naps (Choice B) contradicts the need to manage increased energy levels. Promoting physical activity during mealtimes (Choice D) may not be appropriate as it can distract the client from eating, which is crucial in meeting their nutritional needs.

3. Which lab value is critical for patients on warfarin therapy?

Correct answer: A

Rationale: The correct answer is to monitor INR levels for patients on warfarin therapy. INR monitoring is essential because it helps assess the clotting tendency of the blood and ensures that patients are within the therapeutic range to prevent both blood clots and excessive bleeding. Monitoring potassium levels (Choice B), sodium levels (Choice C), or platelet count (Choice D) is not specifically required for patients on warfarin therapy and does not directly impact the effectiveness or safety of the medication.

4. How do neurotransmitters affect behavior and mental processes?

Correct answer: B

Rationale: Neurotransmitters are chemicals that influence mood, thought, and behavior, playing a significant role in mental health. Choice A is incorrect as neurotransmitters do have a notable effect on behavior. Choice C is incorrect as neurotransmitters have a major role in mental health. Choice D is incorrect as neurotransmitters do not solely determine intelligence levels.

5. A 65-year-old male patient was admitted to a medical-surgical unit 72 hours ago with pyloric stenosis; a nasogastric tube was inserted upon admission and has been on low intermittent suction since then. The nurse taking care of the patient notices that his potassium is very low and becomes concerned that the patient may be at risk for:

Correct answer: C

Rationale: The correct answer is C, metabolic alkalosis. The patient with pyloric stenosis has been on low intermittent suction, leading to the loss of hydrogen and chloride ions. This condition causes metabolic alkalosis due to the removal of these ions. Options A (Hypercalcemia) and D (Respiratory acidosis) are incorrect as they are not directly related to the scenario described. Option B (Metabolic acidosis) is also incorrect; in this case, the patient is at risk of metabolic alkalosis due to the loss of hydrogen and chloride ions through gastric suction.

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