The CardioSecur app, though, automatically compensates for this and for misplacements of the electrodes of up to 5 centimeters, making it easier for patients to use, Riemenschneider said.
CardioSecur is not the only ECG device for smartphones on the market: Others include the Smartheart belt from SHL Telemedicine, which connects to a smartphone via Bluetooth, or the AliveCor, an iPhone case that has two electrodes on the back, one to be touched with each hand.
Whatever the device used, smartphone ECGs have advantages for patients as they are always present, and allow for faster analysis of measurements taken outside the doctor's office.
Many cardiologists wanting to monitor a patient's heartbeat for anomalies over a 24-hour period still expect patients to carry a dictating machine modified to make a four-track recording of the ECG on a standard microcassette at a slower than normal speed. When the patient returns the device, the recording is then transferred to a computer for analysis and interpretation.
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