KROK 1 2017 – Question 38 · KROK (Medicine) · Physiology
A 15-year-old teenager complains of lack of air, general weakness, palpitations. Heart rate is 130/min., BP is 100/60 mm Hg. ECG: QRS complex has normal shape and duration. The number of P waves and ventricular complexes is equal, T wave merges with P wave. What type of cardiac arrhythmia is observed in the teenager?
- A. Paroxysmal atrial tachycardia
- B. Atrial thrill
- C. Atrial fibrillation
- D. Sinus tachycardia
- E. Sinus extrasystole
Hint
Compare the number of P waves with the number of QRS complexes, the QRS shape and the rate, and ask where the impulses arise and whether the rhythm is regular.
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