A nurse is reviewing laboratory data from a client who has pulmonary embolism and is receiving IV heparin. Which of the following findings should the nurse report to the provider?
Partial thromboplastin time (PTT) 55 seconds
Hematocrit 45%
White blood cell count 8,000/mm³
Platelets 74,000/mm³
The Correct Answer is D
A. Partial thromboplastin time (PTT) 55 seconds: This PTT value is within the therapeutic range for a client on heparin therapy.
B. Hematocrit 45%: This hematocrit value is within normal limits and is not concerning.
C. White blood cell count 8,000/mm³: A WBC count of 8,000/mm³ is within the normal range and does not require reporting.
D. Platelets 74,000/mm³: A low platelet count (thrombocytopenia) can indicate heparin-induced thrombocytopenia (HIT), a potentially serious complication of heparin therapy.
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Correct Answer is D
Explanation
A. Creatinine phosphokinase (CPK): CPK levels peak within 24 hours after an MI and return to normal within 2-3 days.
B. Myoglobin: Myoglobin rises within hours but returns to normal within 24 hours after MI.
C. Creatinine kinase-MB (CK-MB): CK-MB peaks 12-24 hours post-MI and returns to baseline within 2-3 days.
D. Troponin T: Troponin T remains elevated for up to 10-14 days after an MI, providing long-term evidence of myocardial injury.
Correct Answer is D
Explanation
A. Barrel chest. A barrel chest is commonly seen in chronic obstructive pulmonary disease (COPD) rather than mitral valve stenosis.
B. Bradycardia. Bradycardia is not typically associated with mitral valve stenosis, as symptoms often include rapid or irregular heartbeat.
C. Clubbing of the fingers. Clubbing is associated with chronic hypoxia, often due to pulmonary conditions, not specifically with mitral valve stenosis.
D. Heart murmur. Mitral valve stenosis causes turbulent blood flow through the narrowed valve, resulting in a characteristic murmur.