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Quiz: Electrocardiography

Female, 74 years, complains on “irregular heart beat”, episodic lightheadedness and  lethargy.

A 7-lead Holter was recorded. Symptoms occurred in the evening hours while at rest, the corresponding tracings are displayed in Figures 1 and 2.  Speed of the recording – 25 mm/s.

Figure 1. Electrocardiogram 1

Figure 2. Electrocardiogram 2

Please choose ALL descriptions which can be detected on this ECG:

1. Sinus bradycardia

2. Sinoatrial block, second degree type II

3. Prolonged PQ interval

4. Multifocal ventricular extrasystoles

5. Atrial bigeminy

6. Ventricular bigeminy

7. Blocked atrial extrasystoles

8. Aberrant conduction

9. Tachycardia-bradycardia syndrome

10. AV block II

 

Mykhaylo Sorokivskyy, Rostyslav Kovalchuk, Volodymyr Kulish

Danylo Halytsky Lviv National Medical University, Lviv. Ukraine

 

Ethics : A patient's consent was obtained for all procedures.

Peer-review: Internal and external

Conflict of interest: None to declare

Authorship: M.S., R.K., V.K. equally contributed to preparation of manuscript and fulfilled authorship criteria

Acknowledgement and funding: None to declare