LPN Pharmacology

Correct Answer: D

Rationale: When assessing a venous stasis leg ulcer, the nurse should expect to note a brownish or 'brawny' appearance. This discoloration is often due to hemosiderin deposits. This characteristic finding helps differentiate venous stasis ulcers from other types of ulcers, making it crucial for accurate diagnosis and appropriate treatment.

Correct Answer: B

Rationale: ST-segment depression can indicate hypokalemia, affecting the heart's electrical conduction. Hypokalemia leads to alterations in the repolarization phase of the cardiac action potential, resulting in ST-segment depression on the ECG.

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.

Correct Answer: B

Rationale: When a client with CAD experiences chest pain, it indicates myocardial ischemia. The nurse should have the client stop the activity and lie back down in bed to reduce the heart's oxygen demand, decrease myocardial workload, and prevent further ischemia. This action helps in improving blood flow to the heart and can potentially alleviate the chest pain.

Correct Answer: B

Rationale: Increasing sodium intake is essential when taking lithium to counteract the risk of developing hyponatremia. Lithium can lead to decreased sodium levels, so increasing sodium intake can help maintain an adequate balance and prevent complications.