Dr. Smith's ECG Blog

MAY 20, 2024

The cardiologist recognized that there were EKG changes, but did not take the patient for emergent catheterization because the EKG was “not meeting criteria for STEMI”. Troponin was elevated and no “STEMI” was seen on the EKG, so if it is acute MI, then “NSTEMI” is the diagnosis (however flawed), not a pathology on the differential.

Chest Pain 122

Chest Pain Blood Pressure Ischemia STEMI 122

Dr. Smith's ECG Blog

DECEMBER 9, 2023

He has a history of STEMI and heart failure. link] Case continued The conventional algorithm diagnosed STEMI and so did the paramedics. A Coronary angiogram from 8 years prior revealed that he had had an inferior posterior STEMI at the time due to 100% occlusion of the proximal RCA. He had a prehospital ECG.

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Aneurysm Chest Pain Echocardiogram STEMI 107

Dr. Smith's ECG Blog

JUNE 19, 2024

His EKG with worse pain now shows enough ST elevation to meet STEMI criteria. Surely, he should be given heparin and taken for an emergent angiogram, right? The EKG was read by the conventional computer algorithm as diagnostic of “ACUTE MI/STEMI”. The patient started receiving medications for “STEMI” (including heparin!!!)

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Chest Pain Pericarditis Pacemaker STEMI 60

Dr. Smith's ECG Blog

NOVEMBER 4, 2022

This has been termed a “STEMI equivalent” and included in STEMI guidelines, suggesting this patient should receive dual anti-platelets, heparin and immediate cath lab activation–or thrombolysis in centres where cath lab is not available. aVR ST segment elevation: acute STEMI or not? Incidence of an acute coronary occlusion.

Ischemia 52

Ischemia STEMI Stenosis Chest Pain 52

EMS 12-Lead

MARCH 19, 2023

It doesn’t meet any conventional STEMI criteria, but there is patently obvious increased area under the curve. Learning points 1] Acute Coronary Syndrome has many shades of clinical manifestation. To which the lead paramedic replied, “Not cardiac; his symptoms are atypical. The shortened PR-interval is probably an accessory pathway.”

Myocardial Infarction 52

Myocardial Infarction STEMI Coronary Angiogram Coronary Artery Disease 52

Ken Grauer, MD

JULY 15, 2023

CT coronary angiogram — No obstructive coronary disease. CT coronary angiogram showed no obstructive coronary disease. But immediate resolution of chest pain once VT was converted — and — the normal CT coronary angiogram — essentially ruled out acute coronary disease as the cause.

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Blog Coronary Angiogram Cardiomyopathy Ischemia 78

EMS 12-Lead

APRIL 8, 2022

BP 142/100 HR 90 RR 16 (BBS CTA) SpO2 99 (RA) Dstick 110 My colleagues noted the ST-depression in the respective leads, as well, and STEMI activated to the nearest PCI center. 1] Here is the admitting ED ECG after cancellation of Code STEMI. Cardiology admitted him for observation with plans for next-day coronary angiogram.

Myocardial Infarction 52

Myocardial Infarction Coronary Angiogram STEMI Ischemia 52

Dr. Smith's ECG Blog

MAY 16, 2023

Here is the Queen of Heart's interpretation: The cath lab had been activated for concern of STEMI. Learning Points: This is one of many examples of false positive STEMI criteria, which is distinguishable by expert humans, and now by AI such as QOH. Emergent CT coronary angio also likely has a role in such cases.

Chest Pain 52

Chest Pain Pericarditis Tachycardia STEMI 52

EMS 12-Lead

MAY 20, 2022

This worried the crew of potential acute coronary syndrome and STEMI was activated pre-hospital. As it currently stands, an ST/S ratio >15% should raise awareness for new anterior STEMI. Type II MI), however decided to pursue coronary angiogram out of an abundance of caution.

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Cardiomyopathy Ischemia STEMI Coronary Angiogram 52

Ken Grauer, MD

FEBRUARY 24, 2023

Hospital evaluation for this patient was negative for an acute coronary syndrome ( ie, CT coronary angiogram was normal — troponin was not elevated — and Echo was negative, with no sign of pericardial effusion ). CT Coronary Angiogram showed no sign of underlying coronary disease.

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Pericarditis Blog Chest Pain Coronary Angiogram 78

Dr. Smith's ECG Blog

JANUARY 9, 2023

50% of LAD STEMIs do not have reciprocal findings in inferior leads, and many LAD OMIs instead have STE and/or HATWs in inferior leads instead. The ECG easily meets STEMI criteria in all leads V2-V6, as well. 24 yo woman with chest pain: Is this STEMI? This is not "diffuse", this is simply anterior, lateral, and likely apical.

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Chest Pain Aneurysm STEMI Thrombosis 52

Dr. Smith's ECG Blog

MAY 19, 2022

Ct coronary angiogram showed normal coronary arteries. Smith note: I think CT coronary angiogram is reasonable with the elevated troponins and symptoms. Anterior STEMI? He was given aspirin and heparin and transferred to the local cardiac center for further evaluation. What is it? Activate the Cath Lab?

Chest Pain 52

Chest Pain Exercise Pacemaker Coronary Angiogram 52

EMS 12-Lead

APRIL 21, 2022

STEMI was activated and the patient went to Cath on arrival. It’s judicious, then, to arrange for coronary angiogram. Coronary occlusion, however, might be present concurrently with subendocardial ischemia on the time-zero ECG, or evolve into such. Does the ECG normalize?

Ischemia 52

Ischemia Myocardial Infarction Blog Coronary Angiogram 52

Dr. Smith's ECG Blog

NOVEMBER 19, 2016

Clinical Course The paramedic activated a “Code STEMI” alert and transported the patient nearly 50 miles to the closest tertiary medical center. The diagnostic coronary angiogram identified only minimal coronary artery disease, but there was a severely calcified, ‘immobile’ aortic valve. Look at the aortic outflow tract.

Ischemia 52

Ischemia Cardiogenic Shock Aortic Stenosis 52