LPN Pharmacology

Correct Answer: A

Rationale: In hyperkalemia, tall, peaked T waves are a distinct ECG finding. These T waves can be seen as a result of increased serum potassium levels, affecting the repolarization phase of the cardiac action potential. It is crucial for healthcare providers to recognize this ECG change promptly as hyperkalemia can lead to serious cardiac arrhythmias and complications.

Correct Answer: D

Rationale: Assessing the client's level of consciousness is the priority action post-CABG surgery to monitor for signs of cerebral hypoxia or other complications that require immediate intervention. Changes in the client's level of consciousness can indicate neurological deterioration, which is critical to address promptly in this postoperative period.

Correct Answer: D

Rationale: Adhering to dietary restrictions is crucial in managing heart health post-angioplasty.

Correct Answer: A

Rationale: Central venous pressure (CVP) measurements are most accurate when the client is lying flat, as this allows for a consistent baseline. Placing the bed flat ensures that the hydrostatic pressure within the vena cava is not affected by the client's position, providing a more precise reading.

Correct Answer: A

Rationale: Clients with rheumatic heart disease are at risk for infective endocarditis, a serious infection of the heart lining or valves, and need prophylactic antibiotics before invasive procedures, including dental work, to prevent this life-threatening complication.