a patient with atrial fibrillation is prescribed warfarin which laboratory test should the nurse monitor to assess the effectiveness of the medication
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1. A patient with atrial fibrillation is prescribed warfarin. Which laboratory test should the nurse monitor to assess the effectiveness of the medication?

Correct answer: B

Rationale: The correct answer is B: Prothrombin time (PT)/INR. Warfarin affects the clotting ability of the blood by inhibiting vitamin K-dependent clotting factors. Monitoring the prothrombin time (PT) and international normalized ratio (INR) is crucial to assess the effectiveness and safety of warfarin therapy. These tests help determine if the patient is within the desired anticoagulation range to prevent either clotting issues or excessive bleeding.

2. The nurse has completed the admission assessment of a client and has determined that the client's body mass index (BMI) is 33.5 kg/m2. What health promotion advice should the nurse provide to the client?

Correct answer: A

Rationale: Increasing physical activity is a key component of managing BMI and overall health.

3. For a patient with asthma, what is the primary purpose of prescribing montelukast?

Correct answer: B

Rationale: Montelukast, a leukotriene receptor antagonist, is primarily prescribed to prevent asthma attacks. It works by reducing inflammation and bronchoconstriction in the airways, thereby helping to control asthma symptoms and prevent exacerbations.

4. During a home visit, the nurse should evaluate the adequacy of a client's COPD treatment by assessing for which primary symptom?

Correct answer: A

Rationale: Assessing for dyspnea is crucial when evaluating COPD treatment effectiveness as it is a primary symptom of the condition. Dyspnea, or difficulty breathing, is a common and distressing symptom in COPD patients. Monitoring the severity of dyspnea can provide valuable insights into the client's response to treatment and disease progression.

5. A client who is receiving heparin therapy has an activated partial thromboplastin time (aPTT) of 90 seconds. What action should the nurse take?

Correct answer: B

Rationale: An activated partial thromboplastin time (aPTT) of 90 seconds is elevated, indicating a risk of bleeding. The appropriate action for the nurse is to notify the healthcare provider. Increasing the heparin infusion rate can further elevate the aPTT, leading to an increased risk of bleeding. Applying pressure to the injection site is not relevant in this situation. Administering protamine sulfate is used to reverse the effects of heparin in cases of overdose or bleeding, but it is not the initial action for an elevated aPTT.

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