Electrocardiogram of a 48-year old woman who develped severe retrosternal chest heaviness with diaphoresis, dyspnea and nausea after a bowling game.
QRS axis 65º
Interpretation: Regular sinus rhythm. Borderline left atrial abnormality. Hyperacute ST segment elevation (Pardee wave) in the inferior leads II, III, aVF reperesenting current of injury and reciprocal ST segment depression in leads aVL, V1 - V4.
Reciprocal ST segment depression in the anterior precordial leads in
patients with acute inferior MI has been explained by several possible
Regardless of the causes of anterior ST segment depression in patients with
inferior infarction this finding usually indicates more serious prognosis
than its absence.
- subendocardial ischemia or infarction of the anterior wall, "ischemia at
a distance" suggesting significant stenosis of the left anterior descending
- "true" posterior infarction, ST segment depression in V1, V2 representing
"mirror image" of ST segment elevation with R wave of 0.04 s, and R/S ratio
greater than 1 on serial cardiograms.
- true reciprocal electrical phenomenon.
<< back to ECG Decoder