KROK 1 2021 – Question 144 · KROK (Medicine) · Physiology
ECG of the patient shows increased duration of the QRS complex. What is the most likely cause?
- A. Disturbed conduction in the atrioventricular node
- B. Increased atrial excitability
- C. Increased period of ventricular excitation
- D. Increased atrial and ventricular excitability
- E. Increased period of atrial excitation
Hint
The QRS complex records depolarisation spreading through the ventricles; think about what a longer complex says about the time the impulse needs to travel there.
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