Algorithm spots abnormal heart rhythms with doctor-like accuracy

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    See, an ECG doesn’t always show the presence of arrhythmia, so doctors sometimes order patients to wear a wearable ECG device to monitor their heartbeat for two weeks. The researchers took advantage of that practice to create their algorithm. They used the massive dataset provided by heartbeat monitor company iRhythm to train a deep neural network for seven months until it’s capable of detecting 14 types of arrhythmia by looking at ECGs.

    To ensure the results’ accuracy, the team had six cardiologists look at the data and diagnose each individual. They found that the algorithm was able to compete with the cardiologists, and in some cases, it was even able to differentiate between two very similar types of arrhythmia, something that could mean the difference between life and death.

    Pranav Rajpurkar, the paper’s co-lead author, said:

    “The differences in the heartbeat signal can be very subtle but have massive impact in how you choose to tackle these detection. For example, two forms of the arrhythmia known as second-degree atrioventricular block look very similar, but one requires no treatment while the other requires immediate attention.”

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    The scientists are hoping for their creation to lead to a diagnostic tool people in developing nations and remote areas can use if they don’t have immediate access to a doctor. They also believe it could be used on a wearable device to pick up signs of stroke, heart failure or cardiac arrest in at-risk patients.

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