ECG #20

INTERPRETATION:

• Ventricular rate 63 bpm
• Sinus rhythm
• PR interval 138 ms
• Normal QRS axis (31°)
• QRS duration 90 ms
• QTc 442 ms
• Low QRS voltages in the lateral precordial leads (V4-6) with absent R wave progression and dominant S waves
• Normal ST segments
• T wave flattening/inversion throughout the precordial  leads (V2-6)

DIAGNOSIS:

• Right-sided placement of precordial electrodes!