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. This episode self terminated before defibrillation was possible. There are many ways to estimate the QTc ( ie, I illustrate a user-friendly method I developed and have used for decades in the October 25, 2023 post).

Tachycardia 113

Tachycardia Blog Sudden Cardiac Death Arrhythmia 113

Dr. Smith's ECG Blog

JANUARY 23, 2024

She was given CRT-D (Cardiac Resynchronization Therapy-Defibrillator). VT is the second most common presenting arrhythmia. Vaso or inotropic medications are not harmless, and can precipitate life threatening arrhythmias. It is common with 2nd- and 3rd-degree AV block to see a " ventriculophasic " sinus arrhythmia.

Tachycardia 107

Tachycardia Arrhythmia Heart Disease Sudden Cardiac Death 107

Dr. Smith's ECG Blog

OCTOBER 23, 2023

She was successfully revived after several rounds of ACLS including defibrillation and amiodarone. T-wave alternans and the susceptibility to ventricular arrhythmias. Chronic amiodarone evokes no torsade de pointes arrhythmias despite QT lengthening in an animal model of acquired long-QT syndrome. Pacing Clin Electrophysiol.

Tachycardia 131

Tachycardia Cardiac Arrest ICU Blog 131

Dr. Smith's ECG Blog

OCTOBER 20, 2024

The arrhythmia spontaneously converted before defibrillation was achieved. And although severe underlying coronary disease is often the cause — non-coronary causes may be seen ( See My Comment in the March 1, 2023 post for the common causes of DSI ). ECG #3 The above ECG shows a polymorphic VT at a rate of about 180 BPM.

Cardiogenic Shock 128

Cardiogenic Shock Ischemia Chest Pain Cardiac Arrest 128

Dr. Smith's ECG Blog

SEPTEMBER 16, 2024

After resuscitation and defibrillation , there were no more episodes of TdP. Below is the patient’s 12 lead ECG following defibrillation. Learning points : Takotsubo can lead to cardiac arrest from ventricular arrhythmia. NT-proBNP was significantly elevated at 4900ng/L ( ref < 500ng/L ). What does this ECG tell you?

Cardiac Arrest 68

Cardiac Arrest Cardiomyopathy Arrhythmia Atrial Fibrillation 68

Dr. S. Venkatesan MD

FEBRUARY 20, 2024

In myocardial pathology, the genesis and sustainability of ventricular arrhythmia are intricately related to the degree of LV dysfunction of any cause. Tackling SCD was in God’s domain, until the brilliance of Dr. Michel Mirowski shrunk the defibrillator and implanted it under the chest in 1980. (Dr. N Engl J Med. N Engl J Med.

Defibrillator 52

Defibrillator Heart Failure Sudden Cardiac Death Cardiomyopathy 52

Ken Grauer, MD

MARCH 23, 2023

She underwent cardiopulmonary resuscitation for VT/VFib — with ROSC ( R eturn O f S pontaneous C irculation ) following defibrillation and treatment with Epinephrine and Amiodarone. A series of cardiac arrhythmias were seen during the course of her resuscitation — including the interesting arrhythmia shown in the long lead II of Figure-1.

Blog 78

Blog Tachycardia Arrhythmia Atrial Flutter 78

Dr. Smith's ECG Blog

MARCH 15, 2023

We examined the effect of ibutilide, a class III antiarrhythmic agent, on the energy requirement for atrial defibrillation and assessed the value of this agent in facilitating cardioversion in patients with atrial fibrillation that is resistant to conventional transthoracic cardioversion. 25, 2022 ).

Atrial Fibrillation 52

Atrial Fibrillation AFIB Arrhythmia Exercise 52

Dr. Smith's ECG Blog

JANUARY 15, 2024

Jenkins and Frick — I offer 3 additional examples of artifactual distortion ( excerpted from my ECG Blog ) — that resulted in arrhythmia misdiagnosis. The CHALLENGE: In each case — HOW can you immediately discount the arrhythmia that was diagnosed? The September 15, 2023 post — for PTA ( Pulse-Tap Artifact ).

Chest Pain 64

Chest Pain Blog Arrhythmia Critical Care 64

Dr. Smith's ECG Blog

SEPTEMBER 12, 2023

Followup: he was found to have hyperparathyroidism == MY Comment , by K EN G RAUER, MD ( 9/12 /2023 ): == Today's ECG is remarkable for an uncommon but important finding that we periodically review, because it otherwise is all-too-easy to overlook. Treatment is by ICD ( implantable cardioverter defibrillator ). mg/dL (normal 4.4 - 5.2)

Cardiac Arrest 69

Cardiac Arrest Blog Atrial Fibrillation AFIB 69

Circulation: Arrhythmia and Electrophysiology

FEBRUARY 20, 2025

Circulation: Arrhythmia and Electrophysiology, Ahead of Print. We aimed to assess their respective performances in an independent cohort.METHODS:All patients with HCM aged &lt;18 years from a single center were retrospectively included between 2003 and 2023. males), with a mean follow-up of 8.65.5

Arrhythmia 40

Arrhythmia Cardiomyopathy Pediatrics Sudden Cardiac Death 40

Dr. Smith's ECG Blog

FEBRUARY 17, 2023

This causes deadly arrhythmias and should be considered in patients with syncope and short QT 2. Comment by K EN G RAUER, MD ( 2/11 /2023 ): = Today’s case is from a patient with “many complaints”, including chest pain — and, an ECG that raised concern about acute anterior OMI. Short QT syndrome. Hypercalcemia. mEq/L (very high).

Chest Pain 52

Chest Pain Cardiac Arrest STEMI Arrhythmia 52

Dr. Smith's ECG Blog

DECEMBER 31, 2024

Soon after the witnessed occlusion, the patient suffered ventricular fibrillation arrest, from which he was immediately resuscitated with 1 defibrillation. The note documents that the first view of the LCX showed 99%, TIMI 2 flow, but then (before intervention) was seen to fully occlude in real time (100%, TIMI 0).

Ischemia 119

Ischemia Tachycardia Chest Pain STEMI 119

Dr. Smith's ECG Blog

DECEMBER 27, 2024

This is an arrhythmia until proven otherwise. As I've noted on a number of occasions in Dr. Smith's ECG Blog ( See My Comments in the posts from September 20, 2023 January 10, 2024 and April 2, 2022 to name just a few ) I am aware of many cases of sustained VT in which the patient remained awake and alert for hours.

Tachycardia 121

Tachycardia Stents Stent Arrhythmia 121

Dr. Smith's ECG Blog

FEBRUARY 6, 2025

The possibility of an ischemic cause of the ventricular arrhythmia has to be considered! A workup was undertaken in search of a cause of the patient's ventricular arrhythmia. Once the arrhythmia was under control cardiac MRi was performed. The idiopathic VTs are an interesting group of arrhythmias! No PVCs are seen.

Tachycardia 72

Tachycardia Arrhythmia Ablation Atrial Flutter 72