Case 20 — ECG

Six limb lead ECG at 50 mm/sec, 1 cm = 1 mV. Heart rate approximately 220 bpm. Sinus tachycardia. R wave in lead II approximately 3 mV indicating left ventricular enlargement.
Six limb leads (50 mm/s, 1 cm = 1 mV).

Quiz

1. What is the heart rate?

2. What is the most likely heart rhythm?

3. Which chamber is enlarged?

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