1. Positional or Physiological Q waves on the ECG
A. Normal Variant Septal Q waves
B. Normal Variant Q Waves in Leads V1, V2, AVL, III and AVF
C. Acute Loss of lateral R wave progression in case of Left sided Pneumothorax.
D. Chronic loss of lateral R wave progression in case of
Dextrocardia.
2. Q waves in case of Myocardial infiltration and injury
A. Acute processes
- Myocardial Infacrtion or Ischemia
- Myocarditis
- Hyperkalemia
B. Chronic Processes
- Myocardial Infarction
- Myocarditis
- Idiopathic Cardiomyopathy
- Amyloid
- Sarcoid
- Tumor
3. Ventricular Hypertrophy or Enlargement
A. Slow R wave progression in case of left ventricular Hypertrophy
B. Reversed R wave progression in Case of Right Ventricular Hypertrophy
C. Slow R wave progression in case of chronic obstructive lung disease.
D. Hypertrophic Cardiomyopathy can also simulate anterior, inferior, posterior or lateral infarcts.
4. Conduction Abnormalities
A. Slow R wave progression in case of Left Bundle Branch Block
B. Wolff Parkinson White Pattern
