24-hour ambulatory ECG

Classification of ambulatory ECG findings using Meta-Analysis

Age-specific interpretation aid

Classification of ambulatory ECG findings using Meta-Analysis

Choose an age group, record presence or daily frequency, and review the exact category and threshold used.

01

Select age group

Age changes several classification thresholds.

02

Enter findings

Results update immediately for ages 18–39.

7 normal0 borderline0 abnormal
Duration

Sinus pauses

Enter the longest pause during the recording.

Normal
0 seconds longest pause

This normal range is inferred as the complement of the spreadsheet’s abnormal threshold (> 3 seconds); the source does not explicitly label it normal.

Inferred normal range: 0–3 seconds
Presence

First-degree AV block

Present means at least one occurrence in 24 hours.

Normal
First-degree AV block absent

No episode was recorded during the 24-hour ECG, so the binary finding is absent.

Absent = no occurrence in 24 hours
Presence

Second-degree AV block, Type I (Wenckebach)

Present means at least one occurrence in 24 hours.

Normal
Wenckebach absent

No episode was recorded during the 24-hour ECG, so the binary finding is absent.

Absent = no occurrence in 24 hours
Daily count

Supraventricular ectopy (SVE)

Enter the total SVE/PAC count per 24 hours.

Normal
0 SVE beats / 24 hours

The value is within the spreadsheet’s normal range of 0–500 beats per 24 hours for ages 18–39.

Normal: 0–500 / 24 hrs
Presence

Any supraventricular tachycardia (SVT)

Present means at least one episode in 24 hours.

Normal
SVT absent

No episode was recorded during the 24-hour ECG, so the binary finding is absent.

Absent = no occurrence in 24 hours
Daily count

Ventricular ectopy (VE)

Enter the total VE/PVC count per 24 hours.

Normal
0 VE beats / 24 hours

The value is within the spreadsheet’s normal range of 0–500 beats per 24 hours for ages 18–39.

Normal: 0–500 / 24 hrs
Presence

Any non-sustained ventricular tachycardia (NSVT)

Present means at least one episode in 24 hours.

Normal
NSVT absent

No episode was recorded during the 24-hour ECG, so the binary finding is absent.

Absent = no occurrence in 24 hours
Interpret in clinical context. This educational aid reproduces the supplied age-based table; it does not diagnose disease or replace clinician review of the ECG, symptoms, medications, or structural heart findings.