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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ATI Adult Medical Surgical

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 client is receiving intravenous (IV) morphine for pain control. Which assessment finding requires the most immediate intervention?

Correct answer: D

Rationale: A respiratory rate of 8 breaths per minute indicates severe respiratory depression, a life-threatening side effect of opioid therapy. Immediate intervention is crucial to prevent respiratory failure. Monitoring and managing respiratory status are critical in clients receiving opioids to prevent adverse events. Drowsiness, itching, and nausea are common side effects of morphine but are not as immediately life-threatening as severe respiratory depression.

3. A client has developed hepatic encephalopathy secondary to cirrhosis and is receiving care on the medical unit. The client's current medication regimen includes lactulose four times daily. What desired outcome should the nurse relate to this pharmacologic intervention?

Correct answer: A

Rationale: Lactulose is used in hepatic encephalopathy to reduce blood ammonia levels by promoting bowel movements. The desired outcome of lactulose therapy is typically two to three soft bowel movements daily, which helps in eliminating excess ammonia from the body, thus improving the client's condition.

4. A client with heart failure is prescribed digoxin (Lanoxin). Which sign of digoxin toxicity should the nurse teach the client to report?

Correct answer: B

Rationale: Yellow or blurred vision is a hallmark sign of digoxin toxicity. Digoxin toxicity can affect various body systems, but visual disturbances, such as yellow or blurred vision, are important signs that the client should report immediately. Other signs like increased appetite, weight gain, or nasal congestion are not typically associated with digoxin toxicity. Prompt reporting of visual disturbances can help prevent further complications associated with digoxin toxicity.

5. A patient with chronic obstructive pulmonary disease (COPD) is prescribed tiotropium. What is the primary purpose of this medication?

Correct answer: B

Rationale: Tiotropium is a long-acting bronchodilator used to relieve bronchospasm and improve airflow in patients with chronic obstructive pulmonary disease (COPD). It works by relaxing the muscles around the airways, leading to bronchodilation and improved breathing, making it an essential treatment in managing COPD symptoms.

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