ATI RN
Physical Exam Cardiovascular System Questions
Question 1 of 5
Two months after Mr. Edwards' myocardial infarction, which goal assumes highest priority?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
The most important action in Mr. Johnson's care with possible acute myocarditis would be
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 3 of 5
What structures hold up the AV valves and are anchored to the ventricular wall by the papillary muscles?
Correct Answer: A
Rationale: The correct answer is A: Chordae tendineae. These fibrous cords hold up the AV valves (mitral and tricuspid valves) and are anchored to the ventricular wall by the papillary muscles. The papillary muscles contract to prevent the AV valves from prolapsing into the atria during ventricular contraction. Choice B (Papillary muscles) is incorrect as they assist in the function but are not the structures that hold up the AV valves. Choices C (Semilunar valves) and D (Aortic valve) are incorrect as they are not directly involved in supporting the AV valves or anchored by the papillary muscles.
Question 4 of 5
Which artery supplies the right atrium, right ventricle, a portion of the septum, SA node, AV node, and inferior portion of the left ventricle?
Correct Answer: A
Rationale: The correct answer is A: Right coronary artery. This artery supplies the mentioned structures as it branches off from the aorta and follows the coronary sulcus to reach the right side of the heart. It provides blood to the right atrium, right ventricle, part of the septum, SA node, AV node, and inferior left ventricle. The Left circumflex artery (B) mainly supplies the left atrium and lateral part of the left ventricle. The Posterior descending artery (C) typically arises from the right coronary artery and supplies the inferior part of the heart. The Aortic artery (D) is not a specific artery that directly supplies the structures mentioned.
Question 5 of 5
What is the term for the ability of cardiac cells to respond to a stimulus by initiating a cardiac impulse?
Correct Answer: A
Rationale: The correct answer is A: Excitability. Excitability refers to the ability of cardiac cells to respond to a stimulus by initiating a cardiac impulse. This process is essential for the heart to function properly. Contractility (B) is the ability of cardiac muscle to shorten forcibly when stimulated. Rhythmicity (C) refers to the heart's ability to generate a regular rhythm of contractions. Conductivity (D) is the ability of cardiac cells to transmit electrical impulses. Excitability is the most fitting term in this context as it specifically describes the response of cardiac cells to a stimulus.