ATI RN
Cardiovascular System Multiple Choice Questions Questions
Question 1 of 5
Which of the following does not stimulate erythropoietin production?
Correct Answer: C
Rationale: Erythropoietin (EPO) production by the kidneys is triggered by hypoxia (e.g., hemorrhage, poor heart pumping, low oxygen). Epinephrine increases heart rate but doesn’t directly stimulate EPO.
Question 2 of 5
The nurse knows which signs and symptoms of a client indicate a venous disorder?
Correct Answer: D
Rationale: Edema and hyperpigmented skin of the lower extremities (D) are classic signs of venous disorders (e.g., chronic venous insufficiency) due to poor venous return. Generalized edema with shortness of breath (A) suggests heart failure, red painful skin (B) indicates a rash or infection, and strong pulses (C) contradict venous issues, which often weaken pulses. (Source: Document, p. 3)
Question 3 of 5
The cardiac output is determined by:
Correct Answer: D
Rationale: Cardiac output (CO = HR × SV) is determined by all listed factors : heart rate (A), preload (B) affects stroke volume (SV), afterload (C) resists SV, and myocardial contractility (D) influences SV. All contribute to CO.
Question 4 of 5
Identify the vessel that carries blood to the left atrium.
Correct Answer: C
Rationale: The pulmonary veins (C) carry oxygenated blood from the lungs to the left atrium. The aorta (A) carries blood from the left ventricle, pulmonary artery (B) from the right ventricle to lungs, and superior vena cava (D) to the right atrium.
Question 5 of 5
Explain the reason there is a delay in processing the electrical signal from the AV node to the AV bundle. To:
Correct Answer: A
Rationale: The AV node delays the impulse (~0.1s) to allow atrial contraction to finish filling ventricles before ventricular systole (A). B occurs naturally, C is due to Purkinje fibers, and D is unrelated.