Dr. Smith's ECG Blog

MARCH 15, 2023

Her Apple Watch suddenly told her that she is in atrial fibrillation. Patients with healthy AV nodes who are not on AV nodal blockers and who are not hyperkalemic should have a rapid ventricular response if they have paroxysmal Atrial fibrillation. Baseline bradycardia in endurance athletes limits the use of ß-blockers.

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Atrial Fibrillation AFIB Arrhythmia Exercise 52

MIBHS

JANUARY 31, 2025

Detection of Irregular Heart Rhythms Devices such as the Apple Watch or Fitbit Sense can detect irregular heart rhythms, including atrial fibrillation (AFib). Early detection of conditions like AFib, bradycardia, or tachycardia allows patients to address issues before they become critical.

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Dr. Smith's ECG Blog

FEBRUARY 6, 2024

Atrial fibrillation is also a predictor of worse outcomes in this case (Alborzi). Other Arrhythmias ( PACs, PVCs, AFib, Bradycardia and AV conduction disorders — potentially lethal VT/VFib ). NOTE: Prediction of cardiac contusion "severity" on the basis of cardiac arrhythmias and ECG findings — is an imperfect science.

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Tachycardia Dysrhythmia Atrial Fibrillation Bradycardia 115

Circulation: Arrhythmia and Electrophysiology

NOVEMBER 10, 2023

Circulation: Arrhythmia and Electrophysiology, Ahead of Print. Background:Despite chronic therapies, atrial fibrillation (AF) leads to rapid ventricular rates (RVR) often requiring intravenous treatments.

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Atrial Fibrillation Bradycardia Electrophysiology Arrhythmia 40

Wellnest

DECEMBER 21, 2022

Atrial Fibrillation Atrial fibrillation causes irregular heartbeat, and the heart's normal blood supply is affected. Since atrial fibrillation can also be intermittent, such patients should continuously monitor their heart activity while performing daily activities with a portable ECG device.

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Cardiac Arrest Heart attacks Heart Attack Atrial Fibrillation 52

Dr. Smith's ECG Blog

SEPTEMBER 16, 2024

Note: Due to the limited number of normally conducted beats — it is hard to be sure whether the underlying rhythm is sinus with baseline artefact or atrial fibrillation. Note: The patient while on telemetry had alternating atrial fibrillation, sinus rhythm with 1st degree AV block and also periods of Wenckebach conduction.

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Cardiac Arrest Cardiomyopathy Arrhythmia Atrial Fibrillation 68

Dr. Smith's ECG Blog

JANUARY 22, 2020

She previously had Atrial fibrillation with LBBB. This shows atrial fibrillation. The fact that the response is regular proves that the atrial fibrillation is NOT conducting. When atrial fib conducts, the ventricular rate must always be irregular. There is a regular, slow response. Hyperkalemia.

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Pulmonary AFIB Atrial Fibrillation Pacemaker 52

Dr. Smith's ECG Blog

OCTOBER 20, 2024

The rhythm now is atrial fibrillation. The arrhythmia spontaneously converted before defibrillation was achieved. As per Dr. Nossen — today's initial ECG ( LEFT tracing in Figure-2 ) shows sinus bradycardia with QRS widening due to bifascicular block ( RBBB/LAHB ). In the initial ECG (ECG# 1) aVR had ST elevation.

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Dr. Smith's ECG Blog

OCTOBER 8, 2023

Another frequent feature of hypothermia is atrial fibrillation (not seen in this case) Core temperature of this patient was 29,5 Celsius. Prominent J waves of this morphology thus are called Osborn waves. Severe hypothermia not uncommonly has accompanying T waves inversions. Troponins were negative in serial blood tests.

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Ischemia Chest Pain Cardiogenic Shock Cardiac Arrest 123

Dr. Smith's ECG Blog

FEBRUARY 8, 2022

Sci 5[4] 268-270, 2015 ) both highlight a likely association between acute development of ischemic J waves — and high risk of developing malignant ventricular arrhythmias.

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Cardiac Arrest Bradycardia Chest Pain Ischemia 40

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. There is atrial fibrillation. mEq/L: The STE is resolved. Mean baseline [K] p was 2.9

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Dr. Smith's ECG Blog

DECEMBER 23, 2019

Detail of Flutter waves The rate of the flutter waves matches the rate of the WCT (about 200/m), proving that the presenting WCT had been 1:1 atrial flutter. The subsequent EP study could not induce VT, only atrial fibrillation. Spontaneous 1:1 atrial flutter Atrial flutter usually has a rate of 300 F/m.

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Tachycardia Atrial Flutter Cardiomyopathy Atrial Fibrillation 52

Dr. Smith's ECG Blog

DECEMBER 16, 2018

The patient had a history of paroxysmal atrial fibrillation and several cardioversions. Additionally, her beta-blocker dose had been decreased because of bradycardia, further predisposing her to atrial flutter. This case is contributed by Brooks Walsh , an EM physician and ECG expert from Connecticut.

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Tachycardia Atrial Flutter AFIB Atrial Fibrillation 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.

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Dr. Smith's ECG Blog

JANUARY 21, 2023

This ECG shows a sinus bradycardia with a normal conduction pattern (normal PR, normal QRS, and normal QTc), normal axis, normal R-wave progression, normal voltages. Hypothermia can also produce bradycardia and J waves, with a pseudo-STEMI pattern. ECG met STEMI criteria and was labeled STEMI by computer interpretation.

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STEMI Bradycardia Arrhythmia Cardiac Arrest 52

Dr. S. Venkatesan MD

NOVEMBER 22, 2024

Atrial fibrillation: Think locally act globally It is clear, except in specific situations like HT, LVH, HFpEF, and other left (or right )sided structural heart diseases, the bulk of the AF is part of systemic destabilization of neuro-metabolic homeostasis. Epicardial Fat and Atrial Fibrillation: A Review. 2017.11.001.

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