IPhone heart monitor put to the test for QT interval accuracy
NCT ID NCT02241252
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether an iPhone ECG device (AliveCor) can accurately measure the QT interval of the heart compared to a standard 12-lead ECG. Researchers studied 29 hospitalized patients starting medications that can affect the QT interval. The goal was to see if the iPhone recording could reliably detect the same electrical changes as the traditional method.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
AliveCor iPhone ECG device
What this could lead to
If successful, this could show that a simple iPhone ECG can reliably monitor QT intervals, potentially enabling easier heart monitoring outside the hospital.
What could go wrong
This is a very small, early validation study with only 29 participants. It only tests one specific measurement and may not apply to other heart conditions or broader populations.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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University of Oklahoma Health Sciences Center
Oklahoma City, Oklahoma, 73104, United States