A Concise History of the ECG: Difference between revisions
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'''1939''' Langendorf reports a case of atrial infarction discovered at autopsy. In retrospect,it could have been diagnosed by changes on the ECG. <cite>Langendorf</cite> | '''1939''' Langendorf reports a case of atrial infarction discovered at autopsy. In retrospect,it could have been diagnosed by changes on the ECG. <cite>Langendorf</cite> | ||
'''1940''' Neuton Stern (student of Lewis)describes and names the "take off, or junction of the R-T (S-T) segment" as the J-point. Am Heart J 1940;20:355-356. | |||
'''1942''' Emanuel Goldberger increases the voltage of Wilson's unipolar leads by 50% and creates the augmented limb leads aVR, aVL and aVF. When they are added to Einthoven's three limb leads and the six chest leads, the 12 lead ECG that we know today emerges. | '''1942''' Emanuel Goldberger increases the voltage of Wilson's unipolar leads by 50% and creates the augmented limb leads aVR, aVL and aVF. When they are added to Einthoven's three limb leads and the six chest leads, the 12 lead ECG that we know today emerges. | ||