ECG Holter Monitoring and Ambulatory ECG 2

Question 1

What is the most common clinical indication for ordering a Holter monitor?

Accepted Answer

Evaluation of unexplained syncope, palpitations, or suspected arrhythmia

Answer

Routine annual cardiac screening for all adults over 40

Answer

Monitoring blood pressure variability over 24 hours

Answer

Assessment of valvular heart disease severity

Question 2

What is the term for a Holter recording event created when the patient presses the device button during symptoms?

Accepted Answer

Patient-activated event marker

Answer

Scheduled event

Answer

Auto-triggered arrhythmia alert

Answer

ST deviation marker

Question 3

What pause duration is generally considered clinically significant during Holter analysis?

Accepted Answer

A pause greater than 2.0 to 2.5 seconds

Answer

Any pause greater than 1.0 second

Answer

A pause greater than 5.0 seconds only

Answer

Any pause occurring exclusively during sleep

Question 4

How long can a cardiac patch monitor (extended ambulatory monitor) typically record compared to a standard Holter?

Accepted Answer

Up to 14 days

Answer

24 to 48 hours

Answer

Exactly 5 minutes per session

Answer

Up to 6 months continuously

Question 5

What is the primary functional difference between a Holter monitor and a cardiac event recorder?

Accepted Answer

A Holter records continuously; an event recorder captures only symptom-triggered or auto-detected events

Answer

An event recorder records exactly 24 hours; a Holter records only during exercise

Answer

A Holter requires physician presence; an event recorder does not

Answer

Event recorders measure blood pressure; Holters measure only rhythm

Question 6

What does an increased 'total AF burden' percentage on a Holter report indicate?

Accepted Answer

The patient spent a greater proportion of monitored time in atrial fibrillation

Answer

The patient's activity level exceeded the normal exercise range

Answer

The Holter had poor electrode contact during the recording

Answer

The patient's QRS duration is prolonged throughout the recording

Question 7

Which Holter finding would require the most urgent physician notification?

Accepted Answer

Sustained ventricular tachycardia lasting more than 30 seconds

Answer

Occasional isolated premature ventricular complexes (PVCs)

Answer

Sinus bradycardia during sleep with heart rate of 45 bpm

Answer

Sinus arrhythmia with respiratory variation