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He made he discovery that electricity causes muscle contractions. He found this out when he was observing the twitches of a frog's leg using a spark generator. -
He developed a technique that measures electrical signals from muscles. He called it "electromyography." -
They demonstrated cardiac group beating. He named it periodic rhythm. He also recorded 2nd degree AV blocks. -
Recorded the first human ECG by placing wires on arms and legs of a patient with rheumatic fever. -
He labeled the deflections of PQRS and T waves. -
He provided the first organized presentation on normal and abnormal ECG's recorded on his string galvanometer. He also presented cases of atrial and ventricular hypertrophy, ventricular premature beats, and introduced the U wave. -
At an address to the Chelsea Clinical Society, Einthoven had outlined his schema for the equilateral triangle formed by his standard leads, l, ll, and lll. It's known as the Einthovens Triangle. -
The first commercially available ECG machine was produced by Cambridge Instrument Company in England. -
He successfully defibrillated a human heart around 137 years after treatment by electric shock in cases of cardiac arrest. -
Norman "Jeff" Holter, invented ambulatory electrocardiography. The first ECG radio transmitter with batteries weighed more than 38 kg. It was also the first broadcast of a radioelectrocardiogram (RECG). -
Computerized ECG analysis becomes possible, allowing for more accurate and efficient interpretation of ECG data. -
Electrocardiographic telemetry from ambulances. This was an approach to mobile coronary care units. -
Erhardt, Sjögren and Wahlberg described the use of a right sided precordial lead in the diagnosis of right ventricular infarction. Which was previously thought to be electrocardiographically silent. "Single right-sided precordial lead in the diagnosis of right ventricular involvement in inferior myocardial infarction." -
Over 400,000 who wore Apple smart watches enrolled in a study being conducted by Stanford researchers and Apple. They were trying to determine whether a wearable technology can identify irregular heart rhythms suggestive of atrial fibrillation. -
EKG technology continues to evolve, with the development of wireless ECG devices and other advanced features that allow for real-time monitoring and analysis of heart function.