A newly diagnosed patient with hypertension is prescribed Diuril, a thiazide diuretic. What patient education should the nurse provide to this patient?

Correct Answer: C

Rationale: Thiazide diuretics can cause postural hypotension, which may be potentiated by alcohol, barbiturates, opioids, or hot weather. Diuril does not cause either moderate hyperkalemia or severe hypokalemia and it does not result in hypernatremia.

Correct Answer: D

Rationale: Failure of R wave progression can indicate infarction in the posterior left ventricle.

Correct Answer: B

Rationale: The first heart sound ('lub') is caused by the closing of the AV valves at the start of ventricular systole.

Correct Answer: D

Rationale: When blood pressure drops, baroreceptors signal the cardio regulatory center to activate the sympathetic nervous system, increasing heart rate to restore blood pressure.

Correct Answer: A

Rationale: Peripheral resistance is primarily influenced by arterial diameter and length, as well as blood viscosity.