Dr. Smith's ECG Blog

SEPTEMBER 29, 2024

This usually represents posterior OMI, but in tachycardia and especially after cardiac arrest, this could simply be demand ischemia, residual subendocardial ischemia due to the low flow state of the cardiac arrest. This rules out subendocardial ischemia and is diagnostic of posterior OMI. The April 8, 2022 post by Drs.

Cardiac Arrest 109

Cardiac Arrest STEMI Ischemia SCAD 109

Dr. Smith's ECG Blog

JANUARY 6, 2024

In the days before I learned to look for OMI, back when I was counting ST elevation boxes, I used to save ischemia for last.) This is sinus tachycardia (rhythm) with complete heart block (AV node function) with ventricular escape rate just below 30. Never forget that sinus tachycardia is the scariest arrhythmia.

Blog 110

Blog Ischemia Tachycardia STEMI 110

Dr. Smith's ECG Blog

AUGUST 17, 2022

ACUTE MI (I allowed Acute MI to be in the report because I knew there would be an elevated troponin from ischemia, which is the definition of acute MI -- but in this case it would most likely be a Type 2 MI from tachycardia) There is also LA-RA lead reversal. The April 17, 2022 post ( Leads V1,V2 misplacement ).

Atrial Fibrillation 52

Atrial Fibrillation Ischemia AFIB Tachycardia 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

JULY 16, 2024

Tachycardia and ST Elevation. == MY Comment , by K EN G RAUER, MD ( 7/7 /2024 ): == Among the most rewarding type of case for me during my days working in the ED — would be seeing a patient who presented with acute CP ( C hest P ain ) — who I would be able to “cure” simply by recognizing and treating their arrhythmia. Would you give lytics?

Atrial Flutter 59

Atrial Flutter Chest Pain Tachycardia Arrhythmia 59

Dr. Smith's ECG Blog

OCTOBER 25, 2022

We see a regular tachycardia with a narrow QRS complex and no evidence of OMI or subendocardial ischemia. The differential of a regular narrow QRS tachycardia is sinus tachycardia, SVT, and atrial flutter with regular conduction. Now the patient is in sinus tachycardia. Her initial EKG is below. Adenosine worked.

Tachycardia 52

Tachycardia Atrial Flutter Dysrhythmia Ablation 52

Dr. Smith's ECG Blog

OCTOBER 15, 2024

It should be treated as such unless there is more information such as old or serial EKGs that can confirm a benign diagnosis, as BTWI patterns can mimic the South Africa Flag Sign (Compare this EKG to case 4 here: [link] com/2022/05/quiz-post-which- of-these-if-any-are-omi.html ). The patient had none of these conditions. It was stented.

Chest Pain 115

Chest Pain STEMI Echocardiogram Stents 115

Dr. Smith's ECG Blog

APRIL 24, 2022

The ECG there reportedly showed an irregular tachycardia, and the patient was immediately referred to the emergency room. Here is her ECG on arrival: There is a wide complex tachycardia that is irregularly irregular (this is difficult to determine at these very high rates). Vitals were within normal limits other than heart rate.

AFIB 52

AFIB Tachycardia Atrial Fibrillation Blog 52

Dr. Smith's ECG Blog

NOVEMBER 28, 2022

The ECG shows sinus tachycardia, a narrow, low voltage QRS with alternating amplitudes, no peaked T waves, no QT prolongation, and some minimal ST elevation in II, III, and aVF (without significant reciprocal STD or T wave inversion in aVL). It is difficult to tell if there is collapse during diastole due to the patient’s tachycardia.

Tachycardia 40

Tachycardia Pericarditis Ultrasound Blood Pressure 40

Dr. Smith's ECG Blog

NOVEMBER 25, 2022

Blunt Trauma in a Child 40-something male in a head-on Motor Vehicle Collision and Splenic Injury == MY Comment, by K EN G RAUER, MD ( 10/10 /2022 ): == Highly interesting post by Dr. Smith regarding a 30-something male with multiple injuries from a motor vehicle accident. Sinus Tachycardia ( common in any trauma patient. ).

Arrhythmia 52

Arrhythmia Blog Chest Pain Cardiac Arrest 52

Dr. Smith's ECG Blog

FEBRUARY 6, 2023

The ECG was incorrectly interpreted as no signs of ischemia. Artificial intelligence can be trained to recognize subtle OMI = My Comment by K EN G RAUER, MD ( 2/6 /2023 ): = The initial ECG in today's case was incorrectly interpreted as, "No signs of ischemia". There is sinus tachycardia at 100-105/minute.

Chest Pain 52

Chest Pain Physiology Blog Stents 52

Dr. Smith's ECG Blog

APRIL 17, 2023

In addition to sinus tachycardia, the only abnormalities listed by the computer were "low voltage, precordial leads" and "anteroseptal infarct, old.Q Cardiologist interpretation: "Technically does not meet STEMI criteria but concerning for ischemia." 4) There is well formed J-point notching. Case 2: What do you think?

Chest Pain 52

Chest Pain STEMI Document Ischemia 52

Ken Grauer, MD

JUNE 27, 2024

IMPRESSION: Given the presence of a wide tachycardia — with 2 distinct QRS morphologies, and no sign of P waves — a presumed diagnosis of B i D irectional Ventricular Tachycardia has to be made. As reviewed by Almarzuqi et al ( Vasc Health Risk Mgmt 18:397-406, 2022 ) — Potential Causes of Bidirectional VT include: Digitalis toxicity.

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Blog Cardiac Arrest Sudden Cardiac Death Tachycardia 160

Dr. Smith's ECG Blog

SEPTEMBER 2, 2024

There is a run of polymorphic ventricular tachycardia — which given the QT prolongation, qualifies as Torsades de Points ( TdP ). This patient was having recurrent episodes of polymorphic ventricular tachycardia with an underlying long QT interval ( = Torsades des Pointes ). ECG #2 Interpretation of ECG #2: Underlying sinus rhythm.

Tachycardia 112

Tachycardia Blog Sudden Cardiac Death Arrhythmia 112

Dr. Smith's ECG Blog

JULY 21, 2024

This progressed to electrical storm , with incessant PolyMorphic Ventricular Tachycardia ( PMVT ) and recurrent episodes of Ventricular Fibrillation ( VFib ). There is no definite evidence of acute ischemia. (ie, Some residual ischemia in the infarct border might still be present.

Arrhythmia 130

Arrhythmia Cardiogenic Shock Bradycardia Defibrillator 130

Dr. Smith's ECG Blog

OCTOBER 10, 2022

In terms of ischemia, there is both a signal of subendocardial ischemia (STD max in V5-V6 with reciprocal STE in aVR) AND a signal of transmural infarction of the inferior wall with Q wave and STE in lead III with reciprocal STD in I and aVL. The rhythm is atrial fibrillation. The QRS complex is within normal limits.

Cardiac Arrest 52

Cardiac Arrest Chest Pain Embolism Pulmonary 52

All About Cardiovascular System and Disorders

OCTOBER 26, 2023

They include myocardial ischemia, acute pericarditis, pulmonary embolism, external compression due to mass over the right ventricular outflow tract region, and metabolic disorders like hyper or hypokalemia and hypercalcemia. 2022 Mar;8(3):386-405. Indian Pacing Electrophysiol J. 2001 Oct 1;1(1):6-11. Brugada Syndrome.

Sudden Cardiac Death 52

Sudden Cardiac Death Atrial Fibrillation Electrophysiology Arrhythmia 52

Dr. Smith's ECG Blog

MAY 5, 2022

After initiating treatment for hyperkalemia, repeat ECG showed resolution of Brugada pattern: The ECG shows sinus tachycardia. A Very Wide Complex Tachycardia. These include ( among others ) — acute febrile illness — variations in autonomic tone — hypothermia — ischemia/infarction/cardiac arrest — and Hyperkalemia.

Chest Pain 52

Chest Pain Bradycardia Cardiac Arrest STEMI 52

Dr. Smith's ECG Blog

MARCH 3, 2025

The status of the patients chest pain at this time is unknown : EKG 1, 1300: There is sinus tachycardia and artifact of low and high frequency. However, there is also significant tachycardia , with heart rate of 116, and known hypoxia. The patient was started on heparin for possible NSTEMI vs demand ischemia.

Tachycardia 73

Tachycardia Pulmonary Chest Pain Stenosis 73

Dr. Smith's ECG Blog

JANUARY 24, 2025

Ventricular tachycardia?) Severe ischemia can be present even when the chest pain is gone. Smith and Meyers present 20 cases of "Swirl" or Swirl "look-alikes" in the October 15, 2022 post. He said it felt like "someone ripped [his] heart out." What do you think? I sent this ECG to Dr. Smith and Dr. Meyers with no context.

Chest Pain 123

Chest Pain STEMI Risk Factors Coronary Artery Disease 123

Dr. Smith's ECG Blog

JANUARY 21, 2025

This ECG was recorded: It is difficult to appreciate P-waves, but I believe this is sinus tachycardia. Time 7 hours lead reversal There is limb lead reversal (QRS in I and aVL are now inverted), but nevertheless one can see that the ischemia appears to have resolved. He was put on BiPAP. A Chest X-ray did not show pulmonary edema.

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Chest Pain STEMI Tachycardia Myocardial Infarction 61

Dr. Smith's ECG Blog

JANUARY 11, 2025

It is a wide complex regular tachycardia at a rate of 120. Is it ventricular tachycardia? I fear that many learners would also not easily recognize where the QRS actually ends, and I fear that some may think that this is ventricular tachycardia due to inability to distinguish QRS from ST segment. The ST Elevation is NOT typical.

Cardiogenic Shock 136

Cardiogenic Shock Chest Pain Tachycardia Cardiac Arrest 136

Dr. Smith's ECG Blog

FEBRUARY 6, 2025

During observation in the ED the patient had multiple self-terminating runs of Non-Sustained monomorphic Ventricular Tachycardia (NSVT). That said there were no clinical symptoms or ECG findings suggestive of ongoing ischemia. This patient very likely has some form of idiopathic ventricular tachycardia.

Tachycardia 71

Tachycardia Arrhythmia Ablation Atrial Flutter 71

Dr. Smith's ECG Blog

JANUARY 13, 2025

Drug toxicity , especially diphenhydramine , which has sodium channel blocking effects, and also anticholinergic effects which may result in sinus tachycardia, hyperthermia, delirium, and dry skin. Among potential conditions that may produce Brugada Phenocopy are infarction and ischemia. Ischemia or infarction. Hyperkalemia 2.

Chest Pain 70

Chest Pain Cardiac Arrest Ischemia Sudden Cardiac Death 70

Dr. Smith's ECG Blog

JANUARY 21, 2023

Occurrence of “J Waves” in 12-Lead ECG as a Marker of Acute Ischemia and Their Cellular Basis. The relationship between J wave and ventricular tachycardia during Takotsubo cardiomyopathy. Can J Cardiol 2022 Kukla P, Jastrezebski M, Praefort W. This is the 2nd ECG from the February 8, 2022 post in Dr. Smith's ECG Blog ).

STEMI 52

STEMI Bradycardia Arrhythmia Cardiac Arrest 52

Dr. Smith's ECG Blog

MARCH 8, 2025

It is possible there is microvascular dysfunction producing residual transmural ischemia. But this is most common when there is prolonged ischemia, and this patient had the fastest reperfusion imaginable! Here is the final angiogram following placement of a stent in the ostial RCA. link] Bai, J., Tang, Z., & & Zhang, P.

Cardiomyopathy 74

Cardiomyopathy Myocardial Infarction Defibrillator Bradycardia 74