2012 Ischemia Myocardial Infarction 
Dr. Smith's ECG Blog
JANUARY 2, 2016
There may be ischemia present, but it is not evident on the ECG. In this paper, Dr. Birnbaum writes: "In patients with ACS without LVH, ST depression with negative T waves in the lateral leads is a sign of sub-endocardial ischemia and is an independent predictor of adverse outcome [11 – 13]. There is no ST elevation beyond V2.
All About Cardiovascular System and Disorders
NOVEMBER 16, 2023
Mechanism is thought to be due to sustained sympathetic stimulation, probably caused by dysfunction of insular cortex resulting in reversible neurogenic damage to the myocardium which could include contraction bands and subendocardial ischemia [2]. 2012 Dec;7(4):290-4. 2012 Dec;7(4):290-4. Maedica (Bucur). Maedica (Bucur).
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?
Dr. Smith's ECG Blog
MAY 8, 2023
Diagnosis of Acute Myocardial Infarction in the Presence of Left Bundle Branch Block using the ST Elevation to S-Wave Ratio in a Modified Sgarbossa Rule. Annals of Emergency Medicine 2012; 60(12):766-776. EKG shown here: LAFB with no clear signs of OMI or ischemia. Derivation in LBBB: --> Smith SW.
Dr. Smith's ECG Blog
DECEMBER 27, 2023
The pain will resolve and you will think the ischemia is gone when it is only hidden ! Comparative early and late outcomes after primary percutaneous coronary intervention in st-segment elevation and Non–St-segment elevation acute myocardial infarction (from the Cadillac trial). & Griffin, J. link] Lee, T. Weisberg, M.,
Dr. Smith's ECG Blog
MAY 6, 2019
Followup ECG: No Change Absence of evolution is the best evidence against ischemia as the etiology. I was taught that the tell-tale sign of ischemia vs an electrical abnormality was in the hx, i.e. chest pain for the ischemia and potential syncope for brugada. Ischemia/infarction. Electrocardiol 45:433-442, 2012 ).
EMS 12-Lead
JUNE 20, 2022
Electrocardiographic differentiation of early repolarization from subtle anterior ST-segment elevation myocardial infarction. It’s important to stress the presence of a normal QRS (i.e., With deliberate practice, spot diagnosis of T-to-R ratio will come with time. References 1] Smith, S. Annals of Emergency Medicine, 60 (1), 45-56.
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