An ECG measures electrical impulses in the heart and produces a reading in the form of a graph. The graph contains individual segments that show the electrical wave activity in the heart.

7 min read. What Is an ... Your doctor might use the term EKG to avoid confusion with an EEG, a different type of medical test that measures brain waves. Electrocardiogram vs. echocardiogram.

An electrocardiogram (Fig. 1) of the Case Records of the Massachusetts General Hospital (in the September 18 issue) needs a few comments or corrections. First of all, the entire tracing in Figure ...

An electrocardiogram (EKG) can test for atrial fibrillation (A-fib). On an EKG, A-fib will typically have an irregular appearance, such as the absence of a P wave in the EKG signal.

With this reading, the waves on the ECG are equal in size and shape, predictable, and regular. With normal sinus rhythm, your heart rate should be between 60 and 100 beats per minute.

How often do you see an ECG that is just a little off? Maybe the T wave is flat, oddly-shaped or inverted. Maybe the ST segment is coved, very minimally-depressed or shows some J point elevation ...

The S 1 Q 3 T 3 pattern is a common ECG finding when a PE is present. But it does not always indicate PE. An ECG reading with this pattern shows: a pronounced S wave in lead 1; a pronounced Q wave ...

The Apple Watch added electrocardiogram (ECG) heart measurements in 2018, and the feature has been saving lives since. Learn how to use it.