Apple Watch Series 4 ECG, Irregular Heart Rate Features Are Now Available

An anonymous reader quotes a report from The Verge: Today, with an update to watchOS, Apple is making its electrocardiogram (EKG or ECG) reading feature available to Apple Watch Series 4 owners. It's also releasing an irregular rate notification feature that will be available on Apple Watches going back to Series 1. Both are a part of watchOS 5.1.2. To take an EKG, you open up the EKG app on the Watch and lightly rest your index finger on the crown for 30 seconds. The Watch then acts like a single-lead EKG to read your heart rhythm and record it into the Health app on your phone. From there, you can create a PDF report to send to your doctor.

The irregular heart rate monitoring is passive. Apple says that it checks your rhythm every two hours or so (depending on whether you're stationary or not), and if there are five consecutive readings that seem abnormal, it will alert you and suggest you reach out to a doctor. If you have been previously diagnosed with atrial fibrillation, Apple's setup process tells you not to use the feature. Apple tells me these features are most definitely not diagnostic tools. In fact, before you can activate either of them, you will need to page through several screens of information that try to put their use into context and warn you to contact your doctor if needed. They are also not the sort of features Apple expects users to really use on a regular basis. The EKG feature, in particular, should only really be used if you feel something abnormal going on, and then you should only share the resulting report with your doctor, not act on it directly. Angela Chen from The Verge notes that these features have only received 'clearance' from the FDA, which is not the same thing as FDA 'approval': The Apple Watch is in Class II. For Class II and Class I, the FDA doesn't give 'approval,' it just gives clearance. Class I and Class II products are lower-risk products -- as [Jon Speer, co-founder of Greenlight Guru] puts it, a classic Class I example is something like a tongue depressor -- and it's much easier to get clearance than approval.

Read more of this story at Slashdot.