Question

exam: rqi als entry
which type of atrioventricular block best describes this rhythm?
choose the correct answer
third - degree
second - degree type i
first - degree
second - degree type ii

Explanation:

First - degree atrioventricular block has a prolonged but constant PR - interval. Second - degree type I (Wenckebach) shows a progressive lengthening of the PR - interval until a P - wave is not conducted. Second - degree type II has a constant PR - interval with intermittent non - conduction of P - waves. Third - degree (complete) atrioventricular block has no relationship between P - waves and QRS complexes. Analyzing the given ECG rhythm strip features would help in identification. However, without seeing the specific details of the rhythm strip like PR - interval changes and P - wave to QRS relationships, a definitive answer can't be given. But if we assume a typical pattern recognition based on common knowledge, if there is a regular rhythm with a fixed PR - interval and all P - waves are conducted, it's first - degree. If there is progressive PR - interval lengthening before a dropped beat, it's second - degree type I. If there are occasional non - conducted P - waves with a constant PR - interval, it's second - degree type II. If P - waves and QRS complexes are independent, it's third - degree.

Answer:

Without seeing the specific rhythm strip details, it's impossible to determine the correct answer from: Third - degree, Second - degree type I, First - degree, Second - degree type II.