Stage III: T waves are inverted, and the ECG is otherwise normal. Stage IV ... The ratio of the T wave amplitude to the ST elevation should be greater than 4 if early repolarization is present ...

The causes of the R wave in lead V1 greater in amplitude than the S wave include ... has a lengthened ST segment, then normal-appearing T wave. Wellen’s phenomenon occurs from a proximal left ...

increase in T-wave amplitude; no deviation from normal sinus rhythm All populations Pulse oximetry Indirect assessment of arterial oxygen saturation Percentage ≥95% at rest and throughout ...