What indicates whether the heart block is low (in the bundle of His)or higher (near the AV junction)?
A)The ventricular rate and QRS configurations
B)The P wave configuration and the PR interval
C)The atrial rate and the P wave configuration
D)The QRS configuration and the P waves

Question

Quizplus · Accepted Answer

The ventricular rate and QRS configurations are key indicators of the location of a heart block. If the block is low in the bundle of His, the QRS complex may be widened due to the delay in ventricular conduction. Conversely, if the block is higher, near the AV junction, the QRS complex might remain narrow as the blockage affects the atrial to ventricular conduction before the impulse reaches the bundle of His.

What Indicates Whether the Heart Block Is Low (In the Bundle