BKAT Study Exam Questions And Answers
What to do first if patient has chest pain. - Answer Rest! ECG changes in an acute MI - Answer ST elevation in 2 or more contiguous leads. Ischemia d/t full thickness loss of muscle. EMERGENCY. Inferior leads - Answer II, III, aVF. RCA occlusion. Septal leads - Answer V1 & V2. Anterior leads - Answer V1 - V4. LAD lesion. Lateral leads - Answer V5, V6, I, and aVL. Circumflex lesion. Cardiac enzymes - Answer Troponins, CK-MB, and CK Changes in CK - Answer Rise: 3-6 hours Peak: 24 hours Normal: 3-4 days Changes in CK-MB - Answer Released after myocardial necrosis. Specific for myocardial damage. Rise: 3-12 hours Peak: 24 hours Normal: 2-3 days Troponin I - Answer Protein found in cardiac muscle. High sensitivity. Rise: 3-12 hours Peak: 24 hours Normal: 5-10 days Troponin T - Answer Protein found in cardiac muscle. High sensitivity. Rise: 3-12 hours Peak: 12-48 hours Normal: 5-14 days
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