Nursing Elites

1. The client is receiving heparin therapy for deep vein thrombosis (DVT). Which lab test should be monitored to evaluate the effectiveness of heparin?

• A. Prothrombin time (PT)
• B. International normalized ratio (INR)
• C. Activated partial thromboplastin time (aPTT)
• D. Fibrinogen levels

Correct answer: C

Rationale: Activated partial thromboplastin time (aPTT) is the appropriate lab test to monitor the therapeutic effectiveness of heparin therapy. Heparin affects the intrinsic pathway of the coagulation cascade, and monitoring aPTT helps ensure the client is within the therapeutic range to prevent clot formation. Prothrombin time (PT) and International normalized ratio (INR) are used to monitor warfarin therapy, a different anticoagulant that affects the extrinsic pathway of the coagulation cascade. Fibrinogen levels are not specific to monitoring heparin therapy.

2. A client's serum calcium level is 7.9 mg/dL. The nurse is immediately concerned, knowing that this level could lead to which complication?

• A. Stroke
• B. Cardiac arrest
• C. High blood pressure
• D. Urinary stone formation

Correct answer: B

Rationale: A serum calcium level below normal (hypocalcemia) can lead to cardiac arrhythmias and potentially cardiac arrest. Calcium plays a crucial role in cardiac muscle contractility, and low levels can disrupt normal heart function, potentially leading to fatal arrhythmias and cardiac arrest. Choices A, C, and D are incorrect as hypocalcemia is not directly associated with stroke, high blood pressure, or urinary stone formation. The immediate concern with low serum calcium levels is the risk of cardiac complications.

3. The client is being ambulated due to activity intolerance caused by bacterial endocarditis. How can the nurse determine that the client is best tolerating ambulation?

• A. Mild dyspnea after walking 10 feet
• B. Minimal chest pain rated 1 on a 1-to-10 pain scale
• C. Pulse rate that increases from 68 to 94 beats per minute
• D. Blood pressure that increases from 114/82 to 118/86 mm Hg

Correct answer: D

Rationale: A slight increase in blood pressure without significant symptoms indicates that the client is tolerating the activity. In this scenario, a mild increase in blood pressure without other symptoms is a positive sign of tolerance to ambulation despite the underlying condition of bacterial endocarditis. Choices A, B, and C are not the best indicators of tolerance to ambulation in this case. Mild dyspnea after walking a short distance, minimal chest pain, and an increase in pulse rate are common signs that the activity might not be well-tolerated by the client with a history of bacterial endocarditis.

4. A client is scheduled for a coronary artery bypass graft (CABG) surgery. The nurse should prepare the client by reinforcing information about which post-operative care measure?

• A. You will be on bed rest for the first 48 hours after surgery.
• B. You will be encouraged to cough and deep breathe frequently.
• C. You will be discharged within 24 hours if no complications arise.
• D. You will not be able to eat or drink for 24 hours after surgery.

Correct answer: B

Rationale: Encouraging the client to cough and deep breathe frequently is essential post-operative care to prevent respiratory complications such as atelectasis and pneumonia after CABG surgery. Choices A, C, and D are incorrect because post-CABG surgery, early mobilization is encouraged to prevent complications such as deep vein thrombosis (DVT) and pneumonia. Discharge within 24 hours is unlikely after CABG surgery, and early oral intake is encouraged to promote recovery and prevent complications.

5. A client with a new prescription for simvastatin is receiving teaching from a healthcare provider. Which of the following statements by the client indicates an understanding of the teaching?

• A. 'I should take this medication in the evening.'
• B. 'I should avoid drinking grapefruit juice.'
• C. 'I should expect my urine to be red-orange while taking this medication.'
• D. 'I will need to take this medication for the rest of my life.'

Correct answer: A

Rationale: The correct answer is A. Taking simvastatin in the evening is recommended because cholesterol synthesis increases at night. This timing maximizes the effectiveness of the medication in lowering cholesterol levels. Choice B is incorrect because grapefruit juice should be avoided with certain statins, but simvastatin is not significantly affected by grapefruit juice. Choice C is incorrect as red-orange urine is not an expected side effect of simvastatin. Choice D is incorrect because simvastatin is typically prescribed for managing cholesterol levels and may not need to be taken for the rest of the client's life.

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