How the ECG app works
The ECG app on JM ECG PPG Smart Watch or later generates an ECG that is similar to a single-lead (or Lead I) ECG. In a doctor’s office, a standard 12-lead ECG is usually taken. This 12-lead ECG records electrical signals from different angles in the heart to produce twelve different waveforms. The ECG app on JM ECG PPG Smart Watch measures a waveform similar to one of those twelve waveforms. A single-lead ECG is able to provide information about heart rate and heart rhythm and enables classification of AFib. However, a single-lead ECG cannot be used to identify some other conditions, like heart attacks. Single-lead ECGs are often prescribed by doctors for people to wear at home or within the hospital so that the doctor can get a better look at the underlying rate and rhythm of the heart. However, the ECG app on JM ECG PPG Smart Watch or later allows you to generate an ECG similar to a single-lead ECG without a prescription from your doctor.
In studies comparing the ECG app on JM ECG PPG Smart Watch to a standard 12-lead ECG taken at the same time, there was agreement between the ECG app classification of the rhythm as sinus or AFib compared to the standard 12-lead ECG.
The ability of the ECG app to accurately classify an ECG recording into AFib and sinus rhythm was tested in a clinical trial of approximately 600 subjects, and demonstrated 99.6% specificity with respect to sinus rhythm classification and 98.3% sensitivity for AFib classification for the classifiable results.
The clinical validation results reflect use in a controlled environment. Real world use of the ECG app may result in a greater number of strips being deemed inconclusive and not classifiable.
How to take an ECG on the JM ECG PPG Smart watch
Open ECG app on JM ECG PPG Smart watch
Hold index finger on Digital Crown
Wait 30 seconds
Once you've set up the app you can take an ECG whenever and wherever you want. The beauty of having the device on you all the time is that you don't have to book an appointment with the doctor.
Simply open the ECG app on the Watch, rest your arm on something to reduce movement, and then hold your index finger (from the arm that doesn't have the watch on it) on the Digital Crown. You don't have to press the Digital Crown. It's all about making a looped connection for the system to monitor what's happening.
JM ECG PPG Smart watch
The test takes around 30 seconds to complete, and you'll see a representation of your heart rate on the screen while you do it. When complete, the JM ECG PPG Smart Watch will give you an instant result, along with the ability to record any symptoms you were feeling at the time.
Meanwhile on your iPhone, you'll get a notification with a link straight to the report so you can see further detail or share the results with your doctor.
What do the JM ECG PPG Smart watch ECG results mean?
Once you've finished capturing your EGC reading, you'll get one of four messages.
Sinus rhythm means everything is as expected. Atrial fibrillation means there is an irregular pattern detected.
Low or high heart rate is the third potential result, while Inconclusive means the test can't determine the end result.
Can you share your Health information with your doctor?
Of course. To do this, go into the Health App > Tap Heart > Electrocardiogram (ECG) > ECG result.
You can then export the details via a PDF to share with your doctor. You decide how that information is shared.