Case 4 — Electrocardiogram (ECG)

ECG showing the six limb leads plus three chest leads (V1, V2, and V4). Calibration markers show 1 cm = 1 mV on the limb leads. Paper speed 50 mm/second. The R wave in lead II exceeds 2.5 mV, indicating left ventricular enlargement.
Second ECG trace providing the six limb leads and chest leads. The R wave in V2 (CV6LL) exceeds 3 mV, further supporting left ventricular hypertrophy. Sinus rhythm is present.

This ECG provides the six limb leads plus three chest leads (V1, V2, and V4). Calibration markers are to the left on the limb leads and show that 1 cm = 1 mV. Paper speed is 50 mm/second.

Quiz

1. There is evidence of one chamber being enlarged on this ECG. Which chamber?

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