WorksheetsHeart Block and Pacemaker Quiz
Total questions: 12
Worksheet time: 6mins
What is the key clue for identifying a 1st-degree AV block?
PR interval gets longer until a drop
P waves and QRS have no relationship
PR interval is long but consistent
PR interval is constant with sudden QRS drops
What happens in 2nd-degree Type II (Mobitz II) heart block?
PR interval is long but consistent
P waves and QRS have no relationship
PR interval is normal or constant, but random QRS drops
PR interval gets longer until a drop
What is the defining feature of a 3rd-degree (Complete) heart block?
PR interval is constant with sudden QRS drops
PR interval is long but consistent
PR interval gets longer until a drop
P waves and QRS have no relationship
What is the clinical question to identify a Wenckebach block?
Are P waves and QRS completely independent?
Does the PR progressively lengthen?
Is the PR interval constant?
Is every P followed by a QRS?
What is the clue for identifying Mobitz II heart block?
PR interval is long but consistent
PR interval is constant with sudden QRS drops
P waves and QRS have no relationship
PR interval gets longer until a drop
What is the defining feature of atrial pacing on an ECG?
Small pacer spike before every P wave
No pacer spike visible
Large pacer spike before a wide QRS
Two pacer spikes before P and QRS
What is the defining feature of ventricular pacing on an ECG?
No pacer spike visible
Small pacer spike before every P wave
Large pacer spike before a wide QRS
Two pacer spikes before P and QRS
What does DDD mode in pacemakers do?
Paces only the ventricle and senses both chambers
Paces both chambers and senses only the ventricle
Paces and senses both chambers, mimicking natural heart physiology
Paces only the atrium and senses only the ventricle
What is the simplest description of DVI mode in pacemakers?
Paces only the atrium and senses only the ventricle
Paces only the ventricle and senses both chambers
Paces both chambers but only senses the ventricle
Paces and senses both chambers, mimicking natural heart physiology
What is the simplest description of VDD mode in pacemakers?
Paces both chambers but only listens to the ventricle
Paces only the ventricle and senses both atrium and ventricle
Paces and senses both chambers, mimicking natural heart physiology
Paces only the atrium and senses only the ventricle
What does 'Failure to Pace' mean in pacemaker malfunction?
Pacemaker fires at the wrong time
Pacemaker does not fire when it should
Pacemaker senses extra noise and pauses pacing
Pacemaker fires but no depolarization occurs
What does 'Failure to Capture' mean in pacemaker malfunction?
Pacemaker fires but no depolarization occurs
Pacemaker does not fire when it should
Pacemaker fires at the wrong time
Pacemaker senses extra noise and pauses pacing
