Correct Answer: A

Rationale: The correct answer is to ensure the catheter is always below the level of the bladder. Placing the catheter tubing above the level of the bladder can lead to backflow of urine, causing urinary tract infections. Changing the catheter bag every 48 hours is important but not as crucial as maintaining proper catheter positioning. Cleaning the perineal area daily and performing catheter care are essential tasks but do not directly address the prevention of complications associated with catheter placement.

Correct Answer: A

Rationale: The correct answer is A: Widening QRS complexes and flat T waves. In the context of an adult male with delirium tremens and symptoms like tachycardia, diaphoresis, restlessness, and disorientation, the presence of widening QRS complexes and flat T waves on an ECG suggests severe electrolyte imbalance, particularly hypokalemia. This severe electrolyte imbalance can lead to life-threatening arrhythmias such as ventricular tachycardia or fibrillation. Tachycardia and elevated blood pressure (choice B) can be expected in delirium tremens but do not directly indicate a life-threatening condition as widening QRS complexes and flat T waves do. Restlessness and anxiety (choice C) are common symptoms of delirium tremens but do not specifically signify a life-threatening condition. Diaphoresis and dehydration (choice D) are also common in delirium tremens but do not directly point towards a life-threatening electrolyte imbalance as widening QRS complexes and flat T waves do.

Correct Answer: B

Rationale: The most important intervention for the nurse to implement is to schedule weekly home visits to draw hCG values. Monitoring hCG levels is crucial in detecting potential complications like choriocarcinoma following GTD evacuation. Teaching about home pregnancy tests (Choice A) may not be as immediate and critical as monitoring hCG levels. A 5-week follow-up appointment (Choice C) may be too delayed for close monitoring. Initiating chemotherapy (Choice D) without appropriate hCG monitoring and evaluation is not recommended as the first-line intervention.

Correct Answer: D

Rationale: The correct answer is to notify the healthcare provider. Purulent drainage at the incision site is concerning as it may indicate an infection. The healthcare provider needs to be informed promptly to initiate appropriate treatment. Applying a sterile dressing (Choice A) may not address the underlying issue of infection. Reinforcing the dressing and documenting findings (Choice B) is important but should be preceded by notifying the healthcare provider. Removing the dressing and assessing the incision site (Choice C) may disturb the area and should be done under the guidance of the healthcare provider.

Correct Answer: C

Rationale: In a client with left-sided heart failure, crackles in the lungs are a critical assessment finding that necessitates immediate intervention. Crackles indicate pulmonary congestion, a sign of worsening heart failure that requires prompt attention to prevent respiratory distress. Jugular venous distention, shortness of breath, and peripheral edema are also common in heart failure, but crackles specifically point to pulmonary involvement and the urgent need for intervention.