Table 3 Cases of negative ambulatory monitor studies (n = 10).

From: Utility of smart watches for identifying arrhythmias in children

Pt #

Duration of symptoms

Clinical scenario or symptoms

Monitors used (duration of use)

Apple Watch findings

EP study findings

1

3 years

Palpitations

Holter monitor (48 h)

Tachycardia alert

AVRT

2

2 years

Palpitations and chest pain

Patch monitor (7 days)

Tachycardia alert

AVNRT

3

2 years

Palpitations with presyncope

Patch monitor (11 days)

Tachycardia alert

AVRT

4

2 years

Exercise-induced palpitations and chest pain

Patch monitor (1 day × 2 trials, failed due to skin reaction to adhesive)

Triggered ECG showing SVT

AVNRT

5

2 months

Palpitations and presyncope, intermittent WPW

Event monitor (30 days)

Triggered ECG showing SVT

WPW/AVRT

6

7 years

Palpitations

Multiple event monitors of unknown wear time

Tachycardia alert

AVNRT

7

1 year

Palpitations thought to be panic attacks, intermittent WPW

Multiple trials of patch monitors (3-, 4-, 6-, 8-, 10-, and 10-day monitoring periods)

Tachycardia alert

WPW/AVRT

8

1 year

Palpitations

Patch monitor (14 days)

Tachycardia alert

AVNRT

9

2 months

Palpitations with exertion

Patch monitor (1 day, terminated due to anxiety with device)

Triggered ECG showing SVT

No EPS—medical therapy

10

6 years

Palpitations and chest tightness, thought to be due to asthma

Patch monitor (13 days)

Triggered ECG showing wide complex tachycardia

No EPS—medical therapy

  1. Cases in which patients underwent a workup involving a traditional ambulatory cardiac monitor which did not detect an episode of the patient’s arrhythmia. The types of monitors used, the duration of use, and the role of the Apple Watch in connecting the patient to care is noted.
  2. M male, F female, SVT supraventricular tachycardia, AVRT atrioventricular reentrant tachycardia, AVNRT atrioventricular nodal reentrant tachycardia, WPW Wolf-Parkinson-White Syndrome, ECG electrocardiogram, EP electrophysiology.