Which of the following does not return to normal for a client experiencing a ST elevated myocardial infarction?
Presence of a significant Q wave
Elevated troponin level
Inverted T wave
ST elevation
The Correct Answer is A
A. The development of a significant Q wave indicates myocardial necrosis and usually persists permanently, reflecting permanent loss of myocardial tissue.
B. Troponin levels rise during a myocardial infarction but return to normal over several days as the acute injury resolves.
C. T wave inversion may occur during ischemia and typically normalizes over time after the infarction.
D. ST elevation is an acute change during myocardial injury and generally returns to baseline after reperfusion or healing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. A HR of 105 bpm after elective cardioversion is mildly elevated and not immediately life-threatening.
B. A client with an ICD that has fired twice in 6 hours and is receiving IV amiodarone is at high risk for life-threatening arrhythmias and requires immediate assessment.
C. Constipation post-EP procedure is uncomfortable but not an urgent concern.
D. New-onset atrial fibrillation requires monitoring and rate control but is generally less urgent than a client with recurrent ICD discharges.
Correct Answer is D
Explanation
A. The subclavian artery is located near the clavicle and is not assessed using the Allen’s test.
B. The popliteal artery is located behind the knee and is unrelated to arterial line placement in the wrist.
C. While the radial artery is commonly used for arterial line insertion, the Allen’s test assesses the ulnar artery to ensure collateral circulation is adequate if the radial artery is cannulated.
D. The Allen’s test evaluates ulnar artery patency by occluding both the radial and ulnar arteries, having the patient make a fist to blanch the hand, then releasing pressure on the ulnar artery to see if normal color returns. This ensures sufficient blood flow from the ulnar artery before inserting a radial arterial line.
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