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Wireless technologies enable transmission of high quality ECG recordings without the need for leads. A device incorporating electrodes into an Apple iPhone case allows for wireless recording of 30-second rhythm strips (LEAD I) to the cloud (AliveCor, Okla. City, OK). ECGs can be downloaded for immediate interpretation using any browser.
iPhone-owning attendees of a Body Computing Conference at USC participated in an 8-week study to determine how they utilize the device.
A total of 54 participants (43± 11 yrs, 77% male, 15% physicians, 61% business, 13% media/entertainment, 11% engineers) transmitted 36± 53 30-second recordings weekly (range 3-298) for 8 weeks. Without training, subjects used the case to record ECG's on themselves and others (61%). Transmission interpretation was normal sinus rhythm (68%); sinus brady or tachy (16%); extra atrial or ventricular systoles (2%); QRS delay (1%); and noise (13%). Symptomatic ventricular tachycardia and asymptomatic ST segment depression were detected in 2 participants, the latter in Mumbai, India (Figure 1 A, B).
Anytime ECG monitoring, as an adjunct to a smartphone is intuitive and allows users to learn about and characterize their heart rates & rhythms. It provides global identification of arrhythmias at any time. The implications of this technology for improving public awareness of health metrics and for the early diagnosis of arrhythmias are enormous.
ACC Moderated Poster Contributions
McCormick Place South, Hall A
Monday, March 26, 2012, 11:00 a.m.-Noon
Session Title: Arrhythmias: Novel Observations for Patients with Atrial Arrhythmias
Abstract Category: 20. Arrhythmias: Other
Presentation Number: 1247-575
- 2012 American College of Cardiology Foundation