A nurse is reviewing the laboratory values of a client who had a myocardial infarction 3 hr ago. The nurse should expect which of the following laboratory values to be elevated?
Serum amylase
Unconjugated bilirubin
Aspartate aminotransferase (AST).
Troponin I
The Correct Answer is D
A. Serum amylase: Serum amylase is an enzyme associated with pancreatic function, and its elevation is not specific to myocardial infarction.
B. Unconjugated bilirubin: Elevation of unconjugated bilirubin is associated with liver function and hemolysis, not specifically with myocardial infarction.
C. Aspartate aminotransferase (AST): While AST may be elevated in conditions affecting the heart, it is not as specific or sensitive for myocardial infarction as troponin I.
D. Troponin I: This is the correct answer. Troponin I is a cardiac-specific biomarker released into the bloodstream when there is damage to cardiac muscle, such as during a myocardial infarction. Troponin I levels start to rise within 3-4 hours after the onset of myocardial infarction, making it a crucial marker for early detection.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Impaired tissue perfusion: While impaired tissue perfusion is a concern in clients with varicose veins, the presence of ulcerations indicates that skin integrity is already compromised. Addressing impaired skin integrity is a more immediate concern.
B. Alteration in activity tolerance: Alteration in activity tolerance may be a consequence of impaired tissue perfusion and impaired skin integrity, but the priority is to address the current skin breakdown and prevent further complications.
C. Impaired skin integrity: This is the correct answer. The presence of varicose veins, ulcerations, and lower extremity edema indicates compromised skin integrity. The nurse should prioritize interventions to promote wound healing, prevent infection, and address the underlying causes contributing to impaired skin integrity.
D. Alteration in body image: While body image concerns may arise in clients with varicose veins, the immediate priority is addressing the physical complications such as impaired skin integrity to prevent further deterioration.
Correct Answer is A
Explanation
A. Cheyne-Stokes respirations: Cheyne-Stokes respirations are characterized by alternating periods of hyperventilation followed by apnea. This respiratory pattern is often observed in clients with conditions affecting the central nervous system, such as brain injury or stroke.
B. Apneustic respirations: Apneustic respirations are characterized by prolonged, gasping inhalations followed by extremely short, ineffective exhalations. This pattern is associated with damage to the pons, a part of the brainstem.
C. Stridor: Stridor is a high-pitched, noisy breathing sound caused by turbulent airflow through a partially obstructed airway. It is not related to the described alternating pattern of hyperventilation and apnea.
D. Kussmaul respirations: Kussmaul respirations are deep, rapid respirations often seen in metabolic acidosis. They are not characterized by the alternating pattern described in the scenario.
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