A patient newly diagnosed with hypertension asks the nurse what happens when uncontrolled hypertension is prolonged. The nurse explains that a patient with prolonged, uncontrolled hypertension is at risk for developing what health problem?

Correct Answer: A

Rationale: When uncontrolled hypertension is prolonged, it can result in renal failure, myocardial infarction, stroke, impaired vision, left ventricular hypertrophy, and cardiac failure. Glaucoma and anemia are not directly associated with hypertension.

Correct Answer: C

Rationale: The repolarisation phase of cardiac muscle cells involves potassium efflux through two types of potassium channels.

Correct Answer: B

Rationale: Central venous pressure averages around 6.4 mmHg and fluctuates with respiration and heart action.

Correct Answer: D

Rationale: Both statements are factually correct but the reason does not explain the assertion.