Question

Patient with syncope and increased PR and QRS duration:

a) Mobitz type II second-degree heart block
b) Third-degree heart block
c) Bundle branch block
d) First-degree heart block

Answer 1

A patient with syncope and increased PR and QRS duration is most likely experiencing a third-degree heart block. In this condition, there is no correlation between atrial activity and ventricular activity, leading to a decreased heart rate.

Step-by-step explanation:

A patient with syncope and increased PR and QRS duration is most likely experiencing a third-degree heart block. In a third-degree heart block, there is no correlation between atrial activity (the P wave) and ventricular activity (the QRS complex). This means that the atria and ventricles are not communicating properly, leading to a decreased heart rate.