: an instrument for recording the changes of electrical potential occurring during the heartbeat used especially in diagnosing abnormalities of heart action
Recent Examples on the WebWith the Apple Watch Series 4, Apple unveiled a full electrocardiograph feature to help monitor heart activity. Beth Mole, Ars Technica, 10 Sep. 2019 Why does the sequence of numbers in the above chart resemble the characteristic spiky, periodic pulsations of an electrocardiograph?Quanta Magazine, 25 Nov. 2015 Instead, the company added a feature that had only recently arrived in the form of specialized consumer devices: an electrocardiograph (ECG), a device made for monitoring the heart's electrical activity. John Timmer, Ars Technica, 12 Dec. 2018 Some of the women had to interrupt their cycling test at submaximal workload, before being pushed to maximal capacity, mainly due to changes seen on an electrocardiograph or due to high blood pressure. Jacqueline Howard, CNN, 14 Mar. 2018 However, doctors discovered a suspicious finding on his electrocardiograph (known as an ECG or EKG) during a followup examination. Susan Scutti, CNN, 6 Sep. 2017