A patient arrives at the clinic for his yearly physical. His vital signs include a blood pressure of 170/110. The patient is prescribed an ACE (angiotensin-converting enzyme) inhibitor. This medication decreases blood pressure by inhibiting the
vasoconstrictive properties of the RAAS (renin-angiotensin-aldosterone system)
vasodilation properties of the RAAS
inotropic properties of the sympathetic nervous system (SNS)
diuretic properties of the natriuretic peptide system
The Correct Answer is A
A. ACE inhibitors block the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor in the RAAS, which leads to decreased blood pressure by promoting vasodilation.
B. The RAAS is primarily a vasoconstrictive system, and ACE inhibitors reduce this vasoconstriction, not vasodilation.
C. ACE inhibitors do not directly affect the inotropic (force of contraction) effects of the SNS; they work on the RAAS.
D. While natriuretic peptides help regulate fluid balance, ACE inhibitors do not directly impact this system.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Hypokalemia causes hyperpolarization, not hypopolarization, making it more difficult for cells to reach an action potential.
B. Hypokalemia does not stimulate the vagus nerve but can lead to arrhythmias.
C. While hypokalemia can cause arrhythmias, it usually leads to tachycardia or other irregular rhythms rather than a bradycardic rate of 40 beats per minute.
D. Low potassium levels can lead to tachycardia (e.g., a heart rate of 150 beats per minute) and other dangerous arrhythmias due to increased irritability of cardiac cells.
Correct Answer is C
Explanation
A. In PAD, the pulses in the legs are often weak or absent, not bounding.
B. Pedal edema is more commonly associated with venous insufficiency rather than PAD, and elevating the legs may not alleviate the edema.
C. Loss of leg hair and shiny skin are classic signs of PAD due to reduced blood flow to the extremities, which leads to skin changes and hair loss.
D. Incompetent valves and venous insufficiency are more related to conditions such as chronic venous insufficiency, not PAD.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.