Dr. Smith's ECG Blog

OCTOBER 28, 2013

STE limited to aVR is due to diffuse subendocardial ischemia, but what of STE in both aVR and V1? The additional ST Elevation in V1 is not usually seen with diffuse subendocardial ischemia, and suggests that something else, like STEMI from LAD occlusion, could be present. Was this: 1) ACS with ischemia and spontaneous reperfusion?

Cardiac Arrest 52

Cardiac Arrest Ischemia Defibrillator Electrocardiogram 52

Dr. Smith's ECG Blog

AUGUST 9, 2019

Post by Smith and Meyers Sam Ghali ( [link] ) just asked me (Smith): "Steve, do left main coronary artery *occlusions* (actual ones with transmural ischemia) have ST Depression or ST Elevation in aVR?" That said, complete LM occlusion would be expected to have subepicardial ischemia (STE) in these myocardial territories: STE vector 1.

Myocardial Infarction 52

Myocardial Infarction Ischemia STEMI Cardiogenic Shock 52

Dr. Smith's ECG Blog

NOVEMBER 4, 2022

His response: “subendocardial ischemia. Smith : It should be noted that, in subendocardial ischemia, in contrast to OMI, absence of wall motion abnormality is common. With the history of Afib, CTA abdomen was ordered to r/o mesenteric ischemia vs ischemic colitis vs small bowel obstruction. Anything more on history?

Ischemia 52

Ischemia STEMI Stenosis Chest Pain 52

Dr. Smith's ECG Blog

AUGUST 3, 2017

Computer read: "Non-specific ST abnormality, consider anterior subendocardial ischemia" There are very poor R-waves in V1-V4 suggesting old anterior MI. Firstly, subendocardial ischemia does not localize on 12-Lead ECG. But the real question at hand is: Are these precordial ST-depressions a result of subendocardial ischemia?

Chest Pain 52

Chest Pain Myocardial Infarction STEMI Ischemia 52

Dr. Smith's ECG Blog

MAY 8, 2023

EKG shown here: LAFB with no clear signs of OMI or ischemia. 8 , 9 The most recent American College of Cardiology and American Heart Association ST-elevation myocardial infarction (STEMI) guidelines (2013) give no direction on diagnosing occlusion myocardial infarction in patients with ventricular paced rhythm. No labs were performed.

Chest Pain 52

Chest Pain Myocardial Infarction STEMI Pacemaker 52

Dr. Smith's ECG Blog

JULY 22, 2023

Induced Brugada-type electrocardiogram, a sign for imminent malignant arrhythmias. This definition was changed following an expert consensus panel in 2013 — so that all that is currently needed to diagnose Brugada Syndrome is a spontaneous or induced Brugada-1 ECG pattern, without need for additional criteria.

Chest Pain 92

Chest Pain Heart Rhythm Sudden Cardiac Death Dysrhythmia 92

Dr. Smith's ECG Blog

JANUARY 30, 2019

Induced Brugada-type electrocardiogram, a sign for imminent malignant arrhythmias. This definition was changed following an expert consensus panel in 2013 — so that at the present time, all that is needed to diagnose Brugada Syndrome is a spontaneous or induced Brugada-1 ECG pattern, without need for additional criteria.

Heart Rhythm 52

Heart Rhythm Sudden Cardiac Death Arrhythmia STEMI 52