A nurse is providing care and education to a client after an acute myocardial infarction. Which of the following statements should the nurse make regarding cardiac enzyme studies?
"Cardiac enzymes assist in diagnosing the presence of pulmonary congestion."
"These tests will enable the provider to determine the heart structure and mobility of the heart valves."
"These tests help determine the degree of damage to the heart tissues."
"Cardiac enzymes will identify the location of the MI."
The Correct Answer is C
A. Cardiac enzymes do not diagnose pulmonary congestion. Pulmonary congestion is typically assessed using imaging, such as a chest X-ray or echocardiography.
B. Cardiac enzyme tests do not assess heart structure or valve mobility. An echocardiogram or cardiac MRI is used for that purpose.
C. Cardiac enzymes, such as troponins and creatine kinase-MB (CK-MB), indicate the extent of myocardial damage and are essential for diagnosing and managing acute myocardial infarction.
D. Cardiac enzymes confirm myocardial injury but do not pinpoint the exact location of the infarction. The location is determined using ECG findings and imaging studies.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","D","E"]
Explanation
A. Osler Nodes – These are tender, painful nodules on the fingers and toes, a classic sign of infective endocarditis.
B. Splinter Hemorrhages – Tiny blood clots under the fingernails occur due to microembolization from infected heart valves.
C. Petechial Hemorrhaging – Small red or purple spots on the skin or mucous membranes occur due to embolization of infected material.
D. Janeway Lesions – Painless, flat, red spots on the palms and soles caused by microemboli.
E. Fever with Chills – A common systemic symptom due to infection and inflammation.
Correct Answer is C
Explanation
A. Holding all medications is not necessary; only certain medications that affect heart rate or blood pressure are held.
B. Keflex (Cephalexin) is an antibiotic and does not affect stress test results, so it should not be held.
C. Tenormin (Atenolol) is a beta-blocker that reduces heart rate and can interfere with the stress test by blunting the expected heart rate response. Beta-blockers are typically held before an exercise stress test.
D. Heparin is an anticoagulant and does not impact the stress test results.
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