The Scut Monkey, 11e. Left arm to right arm Lead II: Check for ST-segment elevation or depression, Q waves, inverted T waves, and poor R-wave progression in the precordial leads see Myocardial Infarction.
Use this site remotely Bookmark your favorite content Track your self-assessment progress and more! Excellent post, sorry about the delay and the outcome.
Here lead V5 happens to show the beginning and end of the QRS very nicely. The PR should be 0.
The magnitude of the reciprocal change in the inferior leads is determined by the magnitude of the ST elevation in I and aVL as these leads are electrically opposite to III and aVF , hence may be minimal or absent in anterior STEMIs that do not involve the high lateral leads. Medically trained bystanders happen to witness the event and begin CPR right away.
The authors reported a very high right of LMCA occlusion cardiogenic shock and death with this finidng. Hopefully we can prevent this in the future by excellent posts like this.