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. When should surgical correction of hypospadias typically occur for a newborn infant as advised by the nurse?

Correct answer: B

Rationale: Surgical repair of hypospadias is recommended to be performed before the child is potty-trained to prevent complications. Early correction helps in achieving better outcomes and reduces the risk of issues related to urination and development of the genitalia.

3. A client is being discharged with a new prescription for enoxaparin (Lovenox). Which instruction should the nurse include?

Correct answer: B

Rationale: The correct instruction for a client with a prescription for enoxaparin (Lovenox) is not to expel the air bubble from the syringe before injection. This ensures the full dose is delivered without affecting the medication's efficacy. Expelling the air bubble may lead to a loss of medication, resulting in suboptimal treatment. Therefore, it is crucial for the client to follow this instruction to receive the intended therapeutic effect of enoxaparin.

4. A 70-year-old man presents with sudden onset of severe abdominal pain. He has a history of atrial fibrillation. Physical examination reveals a soft abdomen with minimal tenderness. What is the most likely diagnosis?

Correct answer: B

Rationale: The sudden onset of severe abdominal pain in a patient with atrial fibrillation, along with a soft abdomen and minimal tenderness on examination, suggest mesenteric ischemia due to embolic occlusion of the mesenteric arteries. This condition is characterized by a sudden and severe decrease in blood flow to the intestines, leading to abdominal pain and tenderness. Acute pancreatitis typically presents with epigastric pain that may radiate to the back, accompanied by elevated serum amylase and lipase levels. Peptic ulcer disease and diverticulitis usually do not manifest with the sudden onset of severe abdominal pain as described in the case.

5. The healthcare provider is caring for a client with Guillain-Barré syndrome. Which assessment finding requires the healthcare provider's immediate action?

Correct answer: D

Rationale: Decreased vital capacity is the most critical assessment finding in a client with Guillain-Barré syndrome as it indicates respiratory compromise. This requires immediate intervention to ensure adequate ventilation and prevent respiratory failure, a common complication of this syndrome. Monitoring and maintaining respiratory function are vital in these clients to prevent complications such as respiratory distress, hypoxia, and respiratory failure. Loss of deep tendon reflexes and ascending weakness are typical manifestations of Guillain-Barré syndrome but do not require immediate action compared to compromised respiratory function. New onset of confusion may be a concern but is not as immediately life-threatening as decreased vital capacity.

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