Dr. Smith's ECG Blog

MARCH 15, 2023

IF the Patient is Younger and Athletic: The mechanism of AFib in younger, athletic individuals is often heavily influenced by increased vagal tone ( Rao and Shipon — ACC, 2019 — and — Calvo et al — Br J Sports Med, 2012 ). Note fairly marked irregularity of the R-R interval — indicative of definite sinus arrhythmia. 25, 2022 ).

Atrial Fibrillation 52

Atrial Fibrillation AFIB Arrhythmia Exercise 52

Ken Grauer, MD

MARCH 12, 2023

What is unusual about this arrhythmia? Doing so suggests that the R-R interval of this exceedingly rapid arrhythmia is just a tiny amount over 1 large box — which corresponds to a ventricular rate just under 300/minute ( ie, between 290-300/minute ). How would YOU interpret the ECG in Figure-1 ?

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Blog Atrial Flutter Arrhythmia AFIB 78

Dr. Smith's ECG Blog

APRIL 17, 2013

A good example of the same situation was posted at “theheart.org” arrhythmia/EP section “ECG of the month” program in 2/2012. Sometimes these secondary manifestations make the tracing look more complicated and eye-catching.

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Pacemaker Arrhythmia 52

Dr. Smith's ECG Blog

SEPTEMBER 18, 2024

IF the patient is an adult of a certain age, who has underlying heart disease — then a high level of exercise becomes increasingly likely to precipitate non-sinus tachyarrhythmias, including potential to induce malignant ventricular arrhythmias. The KEY to determine is therefore — Does the patient have underlying heart disease?

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Atrial Flutter Exercise AFIB Tachycardia 63

Ken Grauer, MD

JANUARY 20, 2024

PEARL # 7: As is evident for many of the examples of AV block that have appeared in this ECG Blog — it is common to see a " ventriculophasic " sinus arrhythmia in association with 2nd or 3rd degree AV block. This is a free download ).

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Blog Bradycardia STEMI Download 94

All About Cardiovascular System and Disorders

MAY 2, 2024

Though sinus bradycardia is usual, other abnormalities like sinus arrhythmia, sinus arrest, wandering atrial pacemaker and coronary sinus rhythm have been described. 2012 Jun;98(12):947-55. Athlete’s bradycardia due to increased parasympathetic tone and decreased sympathetic tone is a well-known observation. References 1.Prior

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Exercise Cardiomyopathy Blood Pressure Physiology 40

Dr. Smith's ECG Blog

SEPTEMBER 2, 2024

There are a number of things to look for in an ECG that can hint at arrhythmia as the cause of an apparent seizure. In my experience, the pathologic finding in the above ECG is the easiest one to overlook — especially if you are in a rush and do not do a systematic review. Learning Points: LQTS can have normal QTc. mEq/L for K+ and 1.76

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Tachycardia Blog Sudden Cardiac Death Arrhythmia 112

Open Heart

APRIL 20, 2022

Methods Patients were retrospectively evaluated between January 2012 and June 2020. Clinical contexts leading to diagnosis were SCD in 3 (6%), ventricular arrhythmias in 15 (29%), chest pain in 8 (15%), heart failure in 6 (12%) and familial screening in 20 (38%).

Cardiomyopathy 52

Cardiomyopathy Chest Pain Sudden Cardiac Death Heart Failure 52

Dr. Smith's ECG Blog

JUNE 2, 2023

Free full text: [link] There are 6 categories of criteria : 1) Imaging 2) Pathologic 3) ECG Repolarization 4) ECG Depolarization 5) Arrhythmias 6) Family History. e5 Article Download PDF Google Scholar 3 RNW Hauer, MGPJ Cox, JA Groeneweg Impact of new electrocardiographic criteria in arrhythmogenic cardiomyopathy Front Physiol, 3 (2012), p.

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Tachycardia Cardiomyopathy Electrocardiogram Article 96

Dr. Smith's ECG Blog

OCTOBER 8, 2023

The rhythm is uncertain ( ie, We only see 4 beats — because the same 4 beats are repeated in limb and chest leads — but in lead II there appears to be sinus bradycardia and arrhythmia plus a P wave with a PR interval too short to conduct preceding beat #1 — therefore need for a longer period of monitoring ).

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Ischemia Chest Pain Cardiogenic Shock Cardiac Arrest 121

Dr. Smith's ECG Blog

JULY 22, 2023

Prior to Mizusawa's study, it was thought that the incidence of syncope, arrhythmia, or SCD in this cohort was low [7]. In light of the risk of arrhythmia events observed in the Mizusawa trial, a formal EP study might be reasonable to obtain in those with fever induced asymptomatic Brugada ECG changes to help risk stratify these patients.

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Chest Pain Heart Rhythm Sudden Cardiac Death Dysrhythmia 92

Dr. Smith's ECG Blog

JANUARY 30, 2019

Prior to Mizusawa's study, it was thought that the incidence of syncope, arrhythmia, or SCD in this cohort was low [7]. In light of the risk of arrhythmia events observed in the Mizusawa trial, a formal EP study might be reasonable to obtain in those with fever induced asymptomatic Brugada ECG changes to help risk stratify these patients.

Heart Rhythm 52

Heart Rhythm Sudden Cardiac Death Arrhythmia STEMI 52

Dr. Smith's ECG Blog

MAY 6, 2019

Electrocardiol 45:433-442, 2012 ). Finally — a detailed family history ( for early sudden death ) + a careful personal history ( for syncope/presyncope; malignant arrhythmia ) is in order. Figure-2: TOP: ECG Brugada-1 and Brugada-2 patterns ( from Bayés de Luna et al: J.

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Chest Pain STEMI Ischemia Myocardial Infarction 52

Dr. Smith's ECG Blog

DECEMBER 5, 2019

J Electrocardiology 45 (2012):433-442. Conclusion of this paper: Fever is a great risk factor for arrhythmia events in Brugada Syndrome patients. Thus, Brugada is the likely diagnosis _ A very nice explanation of this is given in the document quoted below on current ECG criteria for Brugada pattern. Bayes de Luna, A et al.

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Sudden Cardiac Death Heart Rhythm Article Tachycardia 52

Dr. S. Venkatesan MD

NOVEMBER 22, 2024

2012 Apr 4;4(6):483.) We don’t need to think deep, to realize, modalities which take on this arrhythmia head-on has a minuscule role at the population level. 2012 Oct 6;5(3):647. Al Chekakie MO, Akar JG. Epicardial Fat and Atrial Fibrillation: A Review. J Atr Fibrillation. Circ Arrhythm Electrophysiol. 2010 Jun;3(3):230-6.

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Atrial Fibrillation Arrhythmia Risk Factors Bradycardia 52

Dr. Smith's ECG Blog

JANUARY 21, 2023

While traditionally described as “benign early repolarization”, they have been associated with J wave syndromes along with Brugada syndrome, causing ventricular arrhythmias (1, 2). Europace 2012 Shinde R, Shinde S, Makhale C, Grant P, Sathe S, Durairaj M, Lokhandwala Y, Di Diego J, Antzelevitch C. J wave syndromes.

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STEMI Bradycardia Arrhythmia Cardiac Arrest 52