30/10/2026
Poor on an ECG.
Does it always mean a previous heart attack? Not necessarily.
Possible explanations include:
• Prior anterior myocardial infarction
• Left ventricular hypertrophy (LVH)
• Incorrect chest lead placement
• Normal variant
The key is to verify lead placement, compare with previous ECGs and interpret the finding alongside symptoms and the complete tracing.
Because poor R-wave progression alone does not establish a previous .
🔖 Save this ECG reference for your next clinical review and share it with a doctor or resident who needs this reminder.
Heartnet supports healthcare providers with ECG screening with cardiologist review, bringing specialist interpretation into the clinical workflow.