Cardiac Enzyme Evaluation: Myoglobin
- Skeletal or Cardiac Muscle Injury
- Onset: 1 - 4 Hours
- Peak: 12 Hours
- Return to Normal: 24 Hours
- Elevation After 24 Hours: Reinfarction
Cardiac Enzyme Evaluation: Creatine Kinase CK-MB
- Skeletal or Cardiac Muscle Injury
- Onset: 4-8 Hours
- Peak: 12-24 Hours
- Return to Normal: 2-3 Days
Cardiac Enzyme Evaluation: Troponin
- Cardiac Muscle Injury
- Detection in Blood: 4 Hours
- Peak: 24 - 36 Hours
- Return to Normal: 5 - 14 Days
- Most Specific for Cardiac Muscle
- Treat Aggressively
Myocardial Infarction Diagnosis
- 12 Lead ECG
- ST Elevation
- Q Wave
- T Wave Inversion
- Troponin T and I
- CK-MB
- Early ECG
- Cardiac Stress Test
12 Lead Contiguous Leads - Anterior Wall MI
- Lead V3
- Lead V4
- Left Anterior Descending (LAD)
12 Lead Contiguous Leads - Inferior Wall MI
- Lead II
- Lead III
- Lead aVF
- Right Coronary Artery (RCA)
12 Lead Contiguous Leads - Lateral Wall MI
- Lead I
- Lead aVL
- Lead V5
- Lead V6
- Circumflex
12 Lead Contiguous Leads - Septal Wall MI
- Lead V1
- Lead V2
- Left Anterior Descending (LAD)