Which laboratory result will the nurse expect to show a decreased value if a patient develops heparin-induced thrombocytopenia (HIT)?
a. Prothrombin time
b. Erythrocyte count
c. Fibrinogen degradation products
d. Activated partial thromboplastin time
ANS: D
Platelet aggregation in HIT causes neutralization of heparin, so that the activated partial thromboplastin time will be shorter and more heparin will be needed to maintain therapeutic levels. The other data will not be affected by HIT.
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