Ophthalmologists can play a pivotal role in detection and treatment of life-threatening disorders by recognizing syndromes associated with retinal tumors. Ophthalmologists can play a pivotal role in detection and treatment of life-threatening disorders by recognizing syndromes associated with retinal tumors.
The P wave in the ECG represents atrial depolarization, which results in atrial contraction.
True posterior MI. ECG changes are seen in anterior precordial leads V1-3, but are the mirror image of an anteroseptal MI: 1  Increased R wave amplitude and duration (i.e., a pathologic R wave is a mirror image of a pathologic Q). 2  Hyperacute ST-T wave changes: i.e., ST depression and large, inverted T waves in V1-3.