KROK 1 2009 – Question 84 · KROK (Medicine) · Pathophysiology
A 49-year-old patient consulted a doctor about increased fatigability and dyspnea provoked by physical activity. ECG results: heart rate - 50/min, P-Q interval is prolonged, QRS complex is unchanged, the number of P-waves exceeds the number of QRS-complexes. What type of arrhythmia is it?
- A. Sinus bradycardia
- B. Atrioventricular block
- C. Sinoatrial block
- D. Extrasystole
- E. Ciliary arrhythmia
Hint
Compare the number of P waves with the number of QRS complexes and ask what the prolonged P-Q interval says about conduction between the chambers.
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