Exam questionKROK 1Dentistry · 2009
ECG of a patient showed that RR interval equaled 1,5 s, heart rate equaled 40 bpm. What is cardiac pacemaker?
Answer options
- Atrioventricular node
- Left branch of His’ bundle
- Sinus node
- His’ bundle
- Right branch of His’ bundle
Correct answer
Atrioventricular node
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