EMS 12-Lead

AUGUST 18, 2024

link] [link] Here’s a recent article from the JACC that not only summarizes previous WCT ECG research (eg, Brugada, Vereckei, etc), but presents a novel algorithm that may perform better. The VT vs SVT with Aberrancy debate is beyond the scope of this particular blog post. Examples provided below.

Tachycardia 59

Tachycardia Blog RN Echocardiogram 59

Dr. Smith's ECG Blog

MAY 8, 2014

A young male with unknown past medical history presents with AMS and tachycardia. There is sinus tachycardia, a prolonged QRS (computer read it as 114 ms, previous ECG with 102 ms). But because the physicians were so focused on his tachycardia, meth use, and rhythm, they did not look for or appreciate the findings of TCA overdose.

Tachycardia 52

Tachycardia Dysrhythmia ICU Pharmacology 52

Dr. Smith's ECG Blog

MARCH 7, 2024

There were times when it would be usurped by sinus tachycardia, then return to this rhythm. I’ve attached an article and an abstract (that article is in Japanese unfortunately … ) that do document that you CAN however on occasion find AIVR in otherwise healthy children — and I suppose that IS what we have here. It is irregular.

Hemorrhage 125

Hemorrhage Chest Pain AFIB Article 125

Dr. Smith's ECG Blog

FEBRUARY 8, 2015

They had already cardioverted at 120 J, then 200 J, which resulted in the following: Ventricular Tachycardia They then cardioverted at 200 J which r esulted in the same narrow complex rhythm shown above, at 185 beats per minute. This would treat both SVT or sinus tachycardia. I suggested esmolol if the heart rate did not improve.

Tachycardia 52

Tachycardia Chest Pain Pharmacology Myocardial Infarction 52

Journal of Cardiovascular Electrophysiology

NOVEMBER 18, 2024

Five criteria predict whether patients are likely or unlikely to have supraventricular tachycardia induced or ablated at an electrophysiologic study (EPS). They can be used as a guide for clinical decision making when considering invasive testing for patients with symptoms of tachycardia.

Tachycardia 45

Tachycardia Ablation Electrophysiology Article 45

Journal of Cardiovascular Electrophysiology

JULY 24, 2024

Abstract Introduction Catheter-based radiofrequency (RF) ablation is generally regarded as the standard approach for patients with ventricular tachycardia (VT) refractory to antiarrhythmic drug therapy and may be considered as a first-line approach when there is a preference to avoid these agents.

Ablation 40

Ablation Tachycardia Article Stenosis 40

American College of Cardiology

NOVEMBER 21, 2024

"CV Sports Chat" is an interview series including expert discussions relative to sports and exercise cardiology and the health care management of athletes.

Tachycardia 66

Tachycardia Exercise Article 66

Dr. Smith's ECG Blog

JANUARY 5, 2020

Multifocal Atrial Tachycardia 2. Full text online: [link] Here are excerpts from the article: From the Introduction: Among rhythm diagnoses, atrial fibrillation (AF) is particularly important for appropriate management. The rhythm is indeed irregularly irregular, so atrial fibrillation must be considered. Sinus with multifocal PACs 3.

Atrial Fibrillation 52

Atrial Fibrillation Tachycardia Arrhythmia Pulmonary 52

Dr. Smith's ECG Blog

APRIL 15, 2019

Here was his initial ED ECG: There is sinus tachycardia at a rate of about 140 There is profound ST Elevation across all precordial leads, as well as I and aVL. I said I think there is a fixed stenosis in the LAD and the tachycardia and stress caused a type 2 STEMI.

Tachycardia 40

Tachycardia STEMI Chest Pain Ischemia 40

Journal of Cardiovascular Electrophysiology

DECEMBER 17, 2024

The cover image is based on the article Five Criteria Predict Induction and Ablation of Supraventricular Tachycardia by Thomas J. McGarry et al.,

Article 40

Article Tachycardia Ablation 40

ECG Guru

OCTOBER 24, 2024

Jones, MD, a long-time contributer to the ECG Guru. Dr Jones is known for his Master Classes in Advanced ECG Interpretation and his published texts, Getting Acquainted With Wide Complex Tachycardias, Getting Acquainted With Laddergrams, and Getting Acquainted With Ischemia and Infarction.

Article 52

Article Ischemia Tachycardia 52

American College of Cardiology

JUNE 28, 2024

What is the prevalence, the management, and the association between supraventricular tachycardias (SVTs) and adverse obstetric outcomes?

Tachycardia 73

Tachycardia Outcomes Article 73

Journal of Cardiovascular Electrophysiology

DECEMBER 10, 2023

The activation signal, or signature, defined as the cumulative number of recording sites that have activated per millisecond, was utilized to segment each re-entrant ventricular tachycardia (VT) circuit into inner and outer circuit pathways, and as an estimate of best ablation lesion location to prevent VT.

Tachycardia 40

Tachycardia Myocardial Infarction Ablation Article 40

Journal of Cardiovascular Electrophysiology

NOVEMBER 6, 2024

Abbreviations: ATTRwt = Amyloid transthyretin wild-type, NSVT = nonsustained ventricular tachycardia, VA = ventricular arrhythmia, VE = ventricular ectopy Abstract Introduction Little is known regarding the prevalence and prognostic implications of non-sustained ventricular tachycardia (NSVT) in patients with wild-type transthyretin cardiac amyloidosis (..)

Tachycardia 40

Tachycardia Heart Failure Arrhythmia Outcomes 40

HeartRhythm

MAY 8, 2024

The present article provides an organized approach to the differential diagnosis of narrow and wide complex tachycardias based on the analysis of electrical activation patterns followed by specific pacing maneuvers in each case.

Electrophysiology 40

Electrophysiology Laboratory Article Tachycardia 40

Dr. Smith's ECG Blog

DECEMBER 13, 2024

The 2019 ESC Guidelines for the management of patients with supraventricular tachycardia indicated that IV Amiodarone should not be considered in these populations. More cases on WPW with atrial fibrillation : A young man with another episode of tachycardia. It may be safe to give IV Amiodarone. What is it? al (2020).

AFIB 103

AFIB Atrial Fibrillation Tachycardia Blog 103

Journal of Cardiovascular Electrophysiology

JANUARY 7, 2024

Abstract Background The mechanism of typical slow-fast atrioventricular nodal re-entrant tachycardia (AVNRT) and its anatomical and electrophysiological circuit inside the right atrium (RA) and Koch's Triangle (KT) are not well known. The mean SR cycle length (CL) was 784.1 ± 6 ms and the mean tachycardia CL was 361.2 ± 54 ms.

Tachycardia 40

Tachycardia Ablation Electrophysiology Arrhythmia 40

Journal of Cardiovascular Electrophysiology

DECEMBER 17, 2023

Patients experiencing electrical storms frequently exhibit monomorphic ventricular tachycardias (VTs) with multiple morphologies, rapid VTs, bidirectional VTs, and polymorphic VTs. Among the ventricular tachycardia (VT) characteristics, multiple morphologies of monomorphic VTs (OR: 10.9, 01) and epsilon waves (OR: 12.24, p  = .02)

Tachycardia 40

Tachycardia Electrocardiogram Risk Factors Article 40

American College of Cardiology

DECEMBER 2, 2024

What is the ability of commercially available waist-high compression (WHC) garments to reduce heart rate and improve symptoms in patients with postural orthostatic tachycardia syndrome (POTS) in a community setting?

POTS 68

POTS Tachycardia Article 68

American College of Cardiology

NOVEMBER 26, 2024

What are the outcomes of patients referred for ventricular tachycardia (VT) ablation according to left ventricular ejection fraction (LVEF), tolerance of VT, and acute ablation outcome?

Ablation 66

Ablation Tachycardia Outcomes Article 66

Journal of Cardiovascular Electrophysiology

FEBRUARY 29, 2024

Intrinsic antitachycardia pacing (iATP) may be beneficial both as first-line and secondary therapies to terminate ventricular tachycardia (VT) effectively in comparison with conventional antitachycardia pacing (ATP). However, the clinical efficacy of iATP in comparison with conventional ATP is unknown.

Defibrillator 40

Defibrillator Tachycardia Article 40

Journal of Cardiovascular Electrophysiology

NOVEMBER 15, 2024

ABSTRACT Background Guidance and outcomes of coronary ischemia assessment (IA) in those with structural heart disease (SHD), presenting with monomorphic ventricular tachycardia (MMVT) is unclear. Objectives To assess the impact of IA on arrhythmic and non-arrhythmic outcomes in those with SHD.

Ischemia 40

Ischemia Tachycardia Outcomes Heart Failure 40

Journal of Cardiovascular Electrophysiology

JANUARY 30, 2025

ABSTRACT Background Recent advancements in ultra-high-density mapping (UHDM) featuring automated functionalities have enhanced our understanding of micro-reentrant atrial tachycardias (mAT) circuits and the precise localization of the origin.

Ablation 40

Ablation Tachycardia Arrhythmia Article 40

Dr. Smith's ECG Blog

JUNE 14, 2024

The team immediately paged cardiology, concerned for polymorphic ventricular tachycardia. Since sinus conducted QRS complexes cannot co-exist together with ventricular tachycardia, this must all be artifact. The rhythm terminated before it could be captured on 12-lead. Upon questioning, the patient reported palpitations.

Atrial Fibrillation 81

Atrial Fibrillation Tachycardia Blog Chest Pain 81

American College of Cardiology

FEBRUARY 20, 2024

What are the outcomes of the stellate ganglion block (SGB) with respect to recurrence of ventricular tachycardia/ventricular fibrillation (VT/VF)?

Arrhythmia 67

Arrhythmia Tachycardia Outcomes Article 67

Journal of Cardiovascular Electrophysiology

DECEMBER 17, 2024

Given the efficacy of other class III agents, it has been used off-label for the treatment of premature ventricular complexes (PVCs) and ventricular tachycardias (VTs). Abstract Background Dofetilide is a class III antiarrhythmic agent approved for the treatment of atrial fibrillation and atrial flutter.

Tachycardia 40

Tachycardia Heart Disease Atrial Flutter Heart Transplant 40

Journal of Cardiovascular Electrophysiology

MARCH 10, 2024

Abstract Introduction Mapping system is useful in ablation of atrioventricular nodal reentry tachycardia (AVNRT) and localization of anatomic variances. Graphical abstract summurized four step of AVNRT ablation.

Ablation 40

Ablation Tachycardia Article 40

HeartRhythm

FEBRUARY 12, 2024

We read with interest Teodorescu et al’s article on a prospective, observational, single-centre study of the characteristics of 10 patients with new-onset or exacerbated postural tachycardia syndrome (POTS) after receiving an mRNA anti-SARS-CoV-2 vaccine [1].

POTS 40

POTS Article Tachycardia 40

American College of Cardiology

JANUARY 21, 2025

Personalized heart digital twin models accurately detect substrate and functional abnormalities during ablation for scar-dependent ventricular tachycardia (VT).

Ablation 58

Ablation Tachycardia Article 58

American College of Cardiology

SEPTEMBER 27, 2024

What substrates exist for ventricular tachycardia (VT) in patients with repaired tetralogy of Fallot (TOF) <30 years of age?

Tachycardia 58

Tachycardia Article 58

Journal of Cardiovascular Electrophysiology

JANUARY 5, 2024

Abstract Introduction It would be helpful in determining ablation strategy if the occurrence of perimitral atrial tachycardia (PMAT) could be predicted in advance.

Bicuspid/Mitral 40

Bicuspid/Mitral Tachycardia Atrial Fibrillation Ablation 40

American College of Cardiology

NOVEMBER 11, 2024

The goal of the AFLOAT trial was to compare the efficacy of flecainide compared with standard of care in preventing atrial fibrillation (AF) post-patent foramen ovale (PFO) closure.

Atrial Fibrillation 53

Atrial Fibrillation Tachycardia Article 53

Journal of Cardiovascular Electrophysiology

JANUARY 4, 2024

Abstract Introduction The utility of ablation index (AI) to guide ventricular tachycardia (VT) ablation in patients with structural heart disease is unknown.

Ablation 40

Ablation Tachycardia Outcomes Heart Disease 40

American College of Cardiology

NOVEMBER 16, 2024

Among patients with ischemic cardiomyopathy and ventricular tachycardia (VT), catheter ablation as a first-line strategy over antiarrhythmic drugs (AAD) was associated with a lower risk of the primary outcome, according to results of the VANISH2 trial.

Ablation 58

Ablation Tachycardia Cardiomyopathy Outcomes 58

American College of Cardiology

DECEMBER 4, 2024

In this week’s View, Dr. Eagle looks at the use of waist-high compression tights in patients with postural orthostatic tachycardia syndrome (POTS).

POTS 56

POTS Stents Stent Tachycardia 56

Dr. Smith's ECG Blog

JUNE 17, 2024

and tachycardia, 1.8. Finally , they found that S1Q3T3, precordial T-wave inversions V1-V4, and tachycardia were independent predictors of PE. In the Marchik article, (assuming they defined it the same way, and the methods do not specify this), S1Q3T3 was found in 8.5% They found that S1Q3T3 had a Positive Likelihood Ratio of 3.7,

Chest Pain 138

Chest Pain Embolism Pulmonary Tachycardia 138

American College of Cardiology

AUGUST 9, 2024

What is the feasibility and safety of ventricular tachycardia (VT) ablation in patients with structural heart disease using a zero-fluoroscopy approach?

Heart Disease 53

Heart Disease Ablation Tachycardia Article 53