Question

question 6 of 20 what is the rhythm? select your answer. sinus rhythm with a 2nd degree type i (wenckebach/mobitz i) av block sinus rhythm with a 1st degree av block sinus bradycardia with a 1st degree av block sinus rhythm with a 2nd degree type ii (mobitz ii) av block

Explanation:

1. Observe the P - R interval: In this ECG, the P - R interval is consistently prolonged (greater than 0.20 seconds) throughout the tracing, which is characteristic of a 1st - degree AV block.
2. Note the heart rate and rhythm: The rhythm is regular and the rate is within a normal range for sinus rhythm (not bradycardic). There are no dropped QRS complexes (which would be seen in 2nd - degree or 3rd - degree AV blocks). Also, there is no progressive lengthening of the P - R interval before a dropped QRS (no Wenckebach phenomenon).

Answer:

Sinus Rhythm with a 1st Degree AV Block