CARDIAC NCLEX : labs questions with correct answers 2024/2025

CARDIAC NCLEX : labsCardiac Lab Tests - correct answer Serum electrolytes, ESR, C-reactive protein, blood coagulation tests (PTT, PT, INR), BUN&cr, total serum cholesterol desirable (LDL, HDL, triglycerides), BNP, enzymes(CK-MB, troponin, myoglobin) PTT - correct answer -blood coagulation test -Heparin PT - correct answer -blood coagulation test -Warfarin (Coumadin) BUN and creatinine - correct answer -reflect renal function and perfusion -levels may increase in MI, CHF, cardiomyopathy B-type natriuretic peptide (BNP) - correct answer -indicator for DX heart failure -critical value : greater than 100 pg/mL Enzymes - correct answer -test indicates death of myocardial muscles;heart attack -CK-MB, troponin, myoglobin Creatinine phosphokinase MB (CK-MB) - correct answer -enzyme -isoenzyme increases within 4-6 hours following MI and remains elevated from 24-72 hours Troponin - correct answer -enzyme -protein considered the cold standard in DX MI -remains elevated 2-3 weeks following event -normal level < 0.2 nag/dL