ATI RN
Cardiovascular Physiology Practice Questions Questions
Question 1 of 5
Which isoenzyme most quickly reflects that a patient has suffered an acute and recent myocardial infarction?
Correct Answer: D
Rationale: The correct answer is D: Troponin. Troponin is a cardiac-specific biomarker released into the bloodstream following myocardial injury, making it the most sensitive and specific marker for detecting acute myocardial infarction. It rises rapidly within hours of the infarction and remains elevated for several days, providing a reliable indication of recent heart damage. LDH (choice A), CK-MM (choice B), and SGOT (choice C) are also cardiac enzymes, but they lack the cardiac specificity and sensitivity of Troponin for detecting acute myocardial infarction. LDH and CK-MM are less specific and slower to rise, while SGOT is found in other tissues besides the heart, leading to lower diagnostic accuracy compared to Troponin.
Question 2 of 5
Which sign is characteristic of cardiac tamponade?
Correct Answer: B
Rationale: The correct answer is B: Beck's triad. Beck's triad consists of hypotension, distended neck veins, and muffled heart sounds, which are classic signs of cardiac tamponade. Hypotension results from decreased cardiac output due to compression of the heart by the fluid in the pericardial sac. Distended neck veins occur due to increased venous pressure from impaired right heart filling. Muffled heart sounds are heard because the fluid around the heart dampens sound transmission. Shortness of breath (Choice A) is a non-specific symptom and can be present in various cardiac conditions. Holosystolic murmur (Choice C) and bounding peripheral pulse (Choice D) are not characteristic of cardiac tamponade.
Question 3 of 5
A patient admitted to the hospital for evaluation of chest pain has no serum cardiac markers 4 hours after the onset of pain. A noninvasive diagnostic test that can differentiate angina from other types of chest pain is a(n)
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
The use of the intra-aortic balloon pump (IABP) would be indicated for the patient with
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
You are caring for a hospitalized patient with heart failure who is receiving captopril (Capoten) and spironolactone (Aldactone). Which laboratory value will be most important to monitor?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.