Dr. Smith's ECG Blog

NOVEMBER 30, 2022

This case was provided by Spencer Schwartz, an outstanding paramedic at Hennepin EMS who is on Hennepin EMS's specialized "P3" team, a team that receives extra training in advanced procedures such as RSI, thoracostomy, vasopressors, and prehospital ultrasound. Takotsubo is a sudden event, not one with crescendo angina. Learning Points: 1.

Plaque 52

Plaque Chest Pain Thrombosis Stenosis 52

Dr. Smith's ECG Blog

APRIL 26, 2017

This meets "STEMI criteria" However, there is very high voltage, with a very deep S-wave in V2 and tall R-wave in V4. The morphology is not right for STEMI. My interpretation: LVH with secondary ST-T abnormalities, exaggerated by stress, not a STEMI. This is very good evidence that the ST elevation is not due to STEMI.

Chest Pain 52

Chest Pain STEMI Ultrasound Pulmonary 52

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? His response: “subendocardial ischemia.

Ischemia 52

Ischemia STEMI Stenosis Chest Pain 52

Dr. Smith's ECG Blog

NOVEMBER 19, 2016

Smith comment: This patient did not have a bedside ultrasound. Had one been done, it would have shown a feature that is apparent on this ultrasound (however, this patient's LV function would not be as good as in this clip): This is recorded with the LV on the right. What should be done? Should the cath lab be activated?

Ischemia 40

Ischemia Cardiogenic Shock Aortic Stenosis 40

Dr. Smith's ECG Blog

APRIL 24, 2020

When the ST vector is primarily posterior, the diagnosis is usually posterior STEMI. ST depression maximal in V5 and V6 cannot be reciprocal to subepicardial, transmural ischemia under aVR because, as stated above, there is no ventricular myocardium beneath that lead, no STEMI under aVR. I just read Ken's comments before publishing.

Ischemia 52

Ischemia Chest Pain Stenosis STEMI 52

Dr. Smith's ECG Blog

SEPTEMBER 4, 2016

Important Learning Point: "STEMI" is defined by millimeter criteria (1 mm in limb leads), which this does not meet. Therefore it is not a STEMI. But what we truly care about is coronary occlusion, for which STEMI is just a surrogate that is only about 75% sensitive for occlusion. Some are STEMI-equivalents. RCA: dominant.

Ischemia 40

Ischemia Chest Pain STEMI Stenosis 40

Dr. Smith's ECG Blog

SEPTEMBER 16, 2015

It may be difficult to read STEMI in the setting of RBBB. There is, however, a long QT also, with abnormal T-waves, but this is not STEMI. This ECG was recorded prehospital, and the computer read STEMI, so the medics activated the cath lab: What do you think? The ECG is consistent with high lateral STEMI. Called 911.

STEMI 40

STEMI Chest Pain Cardiac Arrest Stents 40

Dr. Smith's ECG Blog

JANUARY 4, 2021

Could this be Septal STEMI (STE in V1 and aVR, with reciprocal ST depression in V4-V6?), In Septal STEMI , transmural ischemia of the septum is recorded by the overlying lead V1 as ST Elevation. Lead III is also on the right and might manifest ST Elevation in Septal STEMI. with ADDED STE in III?

Ischemia 40

Ischemia Pulmonary STEMI Chest Pain 40

Dr. Smith's ECG Blog

MARCH 28, 2017

EMS recorded these ECGs: Time 0: In V2-V4, there is ST elevation that does not meet STEMI "criteria," of 1.5 Here are a couple shots with strain, or "speckle tracking" on ED Echo: To, me these look like anterior wall motion abnormality, but I showed them to one of our ultrasound fellows who is very interested in this. She called 911.

STEMI 40

STEMI Risk Factors Bicuspid/Mitral Ultrasound 40

Dr. Smith's ECG Blog

MAY 19, 2020

This is a troponin I level that is almost exclusively seen in STEMI. So this is either a case of MINOCA, or a case of Type II STEMI. If the arrest had another etiology (such as old scar), and the ST elevation is due to severe shock, then it is a type II STEMI. I believe the latter (type II STEMI) is most likely.

Defibrillator 52

Defibrillator Circulation Plaque Cardiac Arrest 52

Dr. Smith's ECG Blog

JANUARY 5, 2024

The LAD has diffuse disease with a few areas of moderate stenosis but no flow-limiting lesions. On intravascular ultrasound (IVUS), the mid RCA plaque was described as "cratered, inflamed, and bulky," and the OM plaque was described as "bulky with evidence of inflammation and probably ulceration."

Angina 121

Angina Plaque Document Stents 121

Dr. Smith's ECG Blog

MARCH 6, 2023

Here is the repeat ECG at 52 minutes after arrival to triage: Obvious posterolateral STEMI Angiographic findings: 1. Left main: no significant stenosis. LAD: proximal 60% eccentric stenosis the hemodynamic significance of which is indeterminate. RCA: Dominant: Mid 50-60% stenosis. It supplies a small diagonal branch.

Chest Pain 52

Chest Pain STEMI Stenosis Blog 52

Dr. Smith's ECG Blog

DECEMBER 19, 2023

link] A 62 year old man with a history of hypertension, type 2 diabetes mellitus, and carotid artery stenosis called 911 at 9:30 in the morning with complaint of chest pain. This is written by Willy Frick, an amazing cardiology fellow in St. He described it as "10/10" intensity, radiating across his chest from right to left.

Plaque 127

Plaque Angina Blog Stents 127

Dr. Smith's ECG Blog

NOVEMBER 3, 2017

These kinds of cases were excluded from the study as obvious anterior STEMI. --QTc Case 1 Acute anterior STEMI from LAD occlusion, or Benign Early Repolarization (BER)? Appropriately, the physicians repeated the ECG 20 minutes later and it was diagnostic of anterior STEMI. Angiogram showed a critical LAD thrombotic stenosis.

Chest Pain 52

Chest Pain STEMI Bradycardia Stenosis 52

Dr. Smith's ECG Blog

OCTOBER 7, 2019

There is an obvious inferior STEMI, but what else? Besides the obvious inferior STEMI, there is across the precordial leads also, especially in V1. This STE is diagnostic of Right Ventricular STEMI (RV MI). In fact, the STE is widespread, mimicking an anterior STEMI. EKG is pictured below: What do you think?

Bradycardia 40

Bradycardia Cardiogenic Shock STEMI Ischemia 40

Dr. Smith's ECG Blog

OCTOBER 23, 2022

EMS recorded these prehospital ECGs: Time 0: In V2-V4, there is ST elevation that does not meet STEMI "criteria," of 1.5 To, me these look like anterior wall motion abnormality, but I showed them to one of our ultrasound fellows who is very interested in this. She was having a transient STEMI, briefly. She called 911.

STEMI 40

STEMI Chest Pain Hospital Risk Factors 40

Dr. Smith's ECG Blog

JANUARY 23, 2023

PMID: 34775811; PMCID: PMC9075358 A bedside ultrasound was performed, shown here: Parasternal short axis view demonstrating inferior LV wall motion akinesis Apical 2 chamber view again demonstrating inferior LV wall akinesis The cath lab was not activated based on the ECG and bedside echo. J Am Heart Assoc. 2021 Dec 7;10(23):e022866.

Chest Pain 52

Chest Pain Blog Stenosis Myocardial Infarction 52

Dr. Smith's ECG Blog

DECEMBER 13, 2019

They found non-obstructive CAD, with only a 20% stenosis of OM2 and 10% RCA. normal variant, not pericarditis) A Young Man with Sharp Chest pain (normal variant, not pericarditis) 24 yo woman with chest pain: Is this STEMI? Beware a negative Bedside ultrasound. No acute culprit. He was admitted to cardiology. Pericarditis?

Pericarditis 52

Pericarditis Chest Pain Aortic Blog 52

Dr. Smith's ECG Blog

MARCH 3, 2025

I suspect pulmonary edema, but we are not given information on presence of B-lines on bedside ultrasound, or CXR findings. Supply-demand mismatch can cause ST Elevation (Type 2 STEMI). Also see these posts of Type II STEMI. Truly, the Marquette 12 SL algorithm correctly identifies this STEMI. Management?

Tachycardia 74

Tachycardia Pulmonary Chest Pain Stenosis 74