# Identifying Demographic Factors Affecting the ECG Duration Collected Using a Single‐Lead ECG Patch Device

## TL;DR

Higher body mass index (BMI) reduces the effectiveness of ECG patches used for monitoring heart conditions like atrial fibrillation due to adhesive failures.

## Contribution

This study identifies BMI as a key factor affecting ECG patch compliance and highlights the need for better adhesive technology for patients with higher BMI.

## Key findings

- BMI was an independent predictor of poorer ECG patch compliance (OR = 0.955, p = 0.033).
- Adhesive failure was the main cause of poor compliance, affecting 11% of patients.
- Higher BMI patients experience reduced wear time due to adhesive issues.

## Abstract

Atrial fibrillation (AF), affecting 3% of the US adults, is the most common arrhythmia. While ambulatory electrocardiogram (ECG) monitoring is essential for AF detection, conventional technologies have diagnostic limitations due to AF's sporadic nature. ECG patches offer extended monitoring periods, though their effectiveness is primarily limited by deteriorating skin‐electrode contact rather than battery or memory constraints.

This analysis reports our experience with the Zio ECG patch (iRhythm, San Francisco, CA) in 256 AF patients.

We analyzed human and technical factors and their association with ECG recording duration using previously recorded data which employed the ECG patch as a reference. Descriptive statistics and logistic regression were used to identify associations.

Body mass index (BMI) was found to be an independent predictor of poorer compliance in a dose‐dependent manner (B = −0.046, OR = 0.955, 95% CI: 0.916–0.996, p = 0.033). Loss of adhesive was the primary reason for poor compliance (n = 25; 11%). These findings can guide researchers and clinicians in determining the appropriateness of a 14‐day ECG patch based on expected wear time and patient compliance.

BMI significantly impacts ECG patch compliance, primarily through adhesive failures. These findings indicate the need for improved adhesive technologies for higher BMI patients. Future device development should prioritize maintaining electrode‐skin contact across diverse patient populations.

ClinicalTrials.gov Identifier: NCT04267133

Body mass index (BMI) significantly impacts electrocardiogram (ECG) patch compliance, with higher BMI associated with reduced wear time. Patients with obesity experience higher rates of adhesive failure, limiting effective 14‐day monitoring. These findings highlight the need for improved adhesive technologies to optimize ambulatory ECG monitoring.