Remote electrocardiograph monitoring using a novel adhesive strip sensor: A pilot study

Figure 1 Remote monitoring system. Top left: The rechargeable module is attached to the adhesive SnapStrip. The SnapStrip is positioned vertically over the sternum. Top right: The cellphone serves as (1) a wireless communication hub with the cloud and (2) as a user interface. Bottom: Recorded physiologic data including ECG and heart rate are presented on an iPAD for analysis and review. ECG: Electrocardiograph.

Figure 2 Remote monitoring system architecture.

Figure 3 Representative examples of electrocardiograph strips. A: This strip demonstrates sinus rhythm. All 4 raters scored this strip as having high quality (score 3); B: This strip demonstrates atrial fibrillation. Although the raters quality score ranged from 1 through 3, the irregularly irregular RR interval and absence of discernible P waves present in this Electrocardiograph signal is diagnostic for atrial fibrillation.

Figure 4 Electrocardiograph strip ratings by reader. Average combined and individual assessments of electrocardiograph quality based on 4 independent experienced raters. The vertical axis represents the percentage of strips rated within each category for each reader. ECG: Electrocardiograph.

Figure 5 Receiver operator characteristic curve for atrial fibrillation using heart rate variability ≥ 7.