Dr. Smith's ECG Blog

DECEMBER 20, 2013

For myself (and I suspect other readers of this blog), however, it affected my perception in exactly the opposite way – it immediately made me suspicious of misdiagnosis and wary of the dangers of diagnosing pericarditis (and therefore missing other diagnoses). There does not seem to be good evidence to answer this question, unfortunately.

Pericarditis 52

Pericarditis Chest Pain Pulmonary STEMI 52

Dr. Smith's ECG Blog

MAY 19, 2020

There is sinus bradycardia with one PVC. Shark Fin morphology has been discussed a number of times on Dr. Smith’s ECG Blog ( For review — See the June 11, 2018 post and the January 24, 2020 post , to name just 2 instances ). She then had a 12-lead: What do you think? A list of conditions that can cause this is below.

Defibrillator 52

Defibrillator Circulation Plaque Cardiac Arrest 52

Dr. Smith's ECG Blog

NOVEMBER 25, 2022

As we've discussed on numerous other posts in Dr. Smith's ECG Blog ( See My Comment at the bottom of the page in the May 5, 2022 post) — a growing number of conditions other than Brugada Syndrome have been found to temporarily produce a Brugada-1 ECG pattern. What are the ECG Findings of Cardiac Contusion?

Arrhythmia 52

Arrhythmia Blog Chest Pain Cardiac Arrest 52

Dr. Smith's ECG Blog

JANUARY 30, 2019

The article is edited by Smith. Figure-1: ECG criteria for diagnosis of a Brugada-1 or Brugada-2 pattern ( See text ). == N OTE : There are numerous additional cases regarding Brugada pattern ECGs by Dr. Smith on this blog ( Simply search for Brugada Syndrome! ). This was submitted by Alexandra Schick. This patient ruled out for MI.

Heart Rhythm 52

Heart Rhythm Sudden Cardiac Death Arrhythmia STEMI 52

Dr. Smith's ECG Blog

APRIL 8, 2016

There is also bradycardia. Bradycardia puts patients at risk for "pause-dependent" Torsades de Pointes. Torsades in acquired long QT is much more likely in bradycardia because the QT interval following a long pause is longer still. However, this review references the Sterns article above, which by my reading does not state this.

STEMI 52

STEMI Myocardial Infarction Cardiac Arrest Arrhythmia 52

Dr. Smith's ECG Blog

MARCH 15, 2023

Ibutilide can convert atrial fib, or if the atrial fib is resistant to electrical cardioversion, ibutilide can facilitate electrical cardioversion (see my description of the New England Journal article below). Baseline bradycardia in endurance athletes limits the use of ß-blockers. Here is the ECG after ibutilide: What do you notice?

Atrial Fibrillation 52

Atrial Fibrillation AFIB Arrhythmia Exercise 52

Dr. Smith's ECG Blog

APRIL 15, 2019

Here is an excerpt from the article: "Normally, only 15% of coronary blood flow occurs during systole, and because myocardial bridging is a systolic event on angiography, its clinical significance and relevance have been questioned.

Tachycardia 40

Tachycardia STEMI Chest Pain Ischemia 40

Dr. Smith's ECG Blog

MARCH 24, 2023

There’s sinus bradycardia, first degree AV block, normal axis, delayed R wave progression, and normal voltages. Hyperacute T waves are deflating, suggesting reperfusion but there is still reciprocal change in I/aVL and ST depression in V2, and the bradycardia is worse. Below is the ECG. What do you think? Take home 1.

Chest Pain 52

Chest Pain STEMI Bradycardia Ischemia 52

Dr. Smith's ECG Blog

APRIL 8, 2015

PVCs N ot generally considered abnormal ECG findings: Isolated PAC, First Degree AV Block, Sinus bradycardia at a rate of 35-45, and Nonspecific ST-T abnormalities (even if different from a previous ECG). Thus, if there is documented sinus bradycardia, and no suspicion of high grade AV block, at the time of the syncope, this is very useful.

Arrhythmia 52

Arrhythmia Outcomes Chest Pain Risk Factors 52

Dr. Smith's ECG Blog

MAY 23, 2022

Patient 2 : 55 year old with 5 hours of chest pain radiating to the shoulder, with nausea and shortness of breath ECG: sinus bradycardia, normal conduction, normal axis, normal R wave progression, no hypertrophy. Smith : The fact that the ECG did not evolve is further proof that this was the baseline ECG. nearly identical to the first case).

Chest Pain 52

Chest Pain STEMI Pericarditis Arrhythmia 52

Dr. Smith's ECG Blog

DECEMBER 5, 2019

Regardless of further evaluation, she should avoid bradycardia, AV nodal blockers, Na channel blockers, and fevers. --If --Genetic testing could be helpful to confirm the diagnosis and allow for screening of other at-risk family members. --EP EP study to further risk stratify her is recommended, with ICD placement depending on the results.

Sudden Cardiac Death 52

Sudden Cardiac Death Heart Rhythm Article Tachycardia 52

Dr. Smith's ECG Blog

MARCH 19, 2025

Despite the baseline artifact theres sinus bradycardia, convex ST elevation in III, reciprocal ST depression in aVL and possible anterior ST depression indicating inferoposterior OMI. See our article here. Influenza-like illness can also trigger plaque rupture. The right precordial leads V1-V3 tell you all you need to know.

Chest Pain 116

Chest Pain STEMI Stent Stents 116

Dr. Smith's ECG Blog

FEBRUARY 4, 2025

Perhaps because the bradycardia in vasovagal syncope is only one part of the autonomic response. Phase 4 block is also referred to as "bradycardia dependent block." If you wish to read more about this, check out the references section at the bottom, especially the articles by Lee and Pillai. A stunning result.

Pacemaker 84

Pacemaker Bradycardia Document Heart Rhythm 84

Dr. Smith's ECG Blog

MARCH 8, 2025

Within ten minutes, she developed bradycardia, hypotension, and ST changes on monitor. Bradycardia and heart block are very common in RCA OMI. After this ECG was obtained, the ER physician received word that the patient's husband had died in the crash. He told the patient this horrible news.

Cardiomyopathy 75

Cardiomyopathy Myocardial Infarction Defibrillator Bradycardia 75