All the parameters with a first-degree block are within normal limits EXCEPT:
A) QRS interval.
B) rhythm.
C) heart rate.
D) PR interval.

Name: All the parameters with a first-degree block are within normal limits EXCEPT: A) QRS interval. B) rhythm. C) heart rate. D) PR interval.
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Question

Quizplus · Accepted Answer

The PR interval is prolonged in a first-degree heart block, which is the distinguishing feature of this condition. All other parameters (QRS interval, rhythm, heart rate) typically remain within normal limits.

All the Parameters with a First-Degree Block Are Within Normal