Dr. Smith's ECG Blog

APRIL 2, 2024

Pacemaker mediated tachycardia! Pacemaker mediated tachycardia , also called "Endless Loop Tachycardia," cannot happen during atrial fibrillation, so the A fib must have converted. Another ECG was recorded 12 minutes later: Paced rhythm, probable Pacemaker-Mediated Tachycardia ? The patient was admitted without angiogram."

Tachycardia 133

Tachycardia Pacemaker Cardiac Arrest Cardiomyopathy 133

Frontiers in Cardiovascular Medicine

JUNE 17, 2024

The incidence of atrial fibrillation (AF) is significantly higher in patients with pacemakers than in the general population, which could be due to patient characteristics and the diagnostic tool of the pacemaker in detecting atrial high-rate episodes and subclinical AF, but also to the pacemaker itself providing AF-promoting conditions.

Pacemaker 52

Pacemaker Atrial Fibrillation Electrophysiology 52

DAIC

JANUARY 19, 2024

The BACKBEAT pivotal study will evaluate the efficacy and safety of atrioventricular interval modulation (“AVIM”) therapy (also known as BackBeat CNT), for the treatment of pacemaker-indicated patients with uncontrolled hypertension despite the use of antihypertensive medications. Orchestra BioMed and Medtronic, Inc. vs. 14.3%).

Pacemaker 92

Pacemaker Hypertension Blood Pressure Kidney Disease 92

HeartRhythm

APRIL 30, 2024

Dual chamber pacemaker implantation has been indicated in patients with symptomatic atrioventricular block (AVB) but carries risks of lead-related complications. Real-world study directly comparing leadless pacemakers and dual chamber pacemakers remains still lacking in patients with AVB.

Pacemaker 40

Pacemaker 40

Frontiers in Cardiovascular Medicine

JULY 8, 2024

ConclusionsWhile genetic silencing of the pacemaker ion channel HCN4 suppresses the automaticity of hPSC-CMs in vitro, this intervention is insufficient to reduce VT risk post-transplantation in the pig MI model, implying more complex mechanism(s) are operational in vivo.

Pacemaker 52

Pacemaker CMS Arrhythmia Transplant 52

Dr. S. Venkatesan MD

APRIL 22, 2024

I thought, it was pacemaker extrusion. It is an intentional exterior placement of a permanent pacemaker generator mimicking an extrusion due to pocket infection. Here is a patient, where a permanent pacemaker was kept temporarily for a few weeks or a month in high-risk reversible complete heart block situations.

Pacemaker 40

Pacemaker Aortic valve TAVR Myocardial Infarction 40

Journal of Cardiothoracic Surgery

JULY 12, 2024

Lead dislodgements, tricuspid valve failure, and wound infections are prominent issues addressed by leadless pacemakers (LPM). These devises have emerged as viable alternatives to conventional transvenous pace.

Pacemaker 52

Pacemaker Tricuspid 52

HeartRhythm

FEBRUARY 18, 2024

Based on the historical studies of leadless pacemakers (LP), high atrio-ventricular synchrony (AVS) with mechanical sensing-based VDD pacing is largely influenced by A4-amplitude. A limited study investigated the predictors of A4-amplitude using clinical and echocardiographic parameters.

Pacemaker 74

Pacemaker 74

American College of Cardiology

MARCH 18, 2024

What is the association between antiarrhythmic drug (AAD) use and the risk of pacemaker implantation or syncope in patients with new-onset atrial fibrillation (AF) receiving early rhythm control therapy with AADs?

Pacemaker 58

Pacemaker Atrial Fibrillation Article 58

Journal of Cardiovascular Electrophysiology

MARCH 27, 2024

Abstract Introduction Pacemaker implantation can be challenging in patients with congenital heart disease. Methods and Results In a patient with Ebstein disease and symptomatic sinus node dysfunction, despite multiple attempts, the Micra® pacemaker could not be implanted in the severely dilated right ventricle.

Pacemaker 49

Pacemaker Congenital Heart Disease Congenital Heart Disease 49

HeartRhythm

APRIL 30, 2024

Cardiac pacemaker device implantation is associated with incidence of different complications. We report a case of combined chylothorax and pulmonary embolism following a dual chamber pacemaker implantation.

Pacemaker 40

Pacemaker Embolism Pulmonary 40

HeartRhythm

APRIL 30, 2024

Leadless pacemaker (LP, Micra, Medtronic) is an effective alternative to a conventional transvenous pacemaker. However, there remains concern about using the LP in frail, elderly patients due to sheath size and perceived risk of perforation,

Pacemaker 40

Pacemaker 40

Medical Xpress - Cardiology

MARCH 17, 2024

By harnessing light, my colleagues and I designed a wireless, ultrathin pacemaker that operates like a solar panel. This design not only eliminates the need for batteries but also minimizes disruptions to the heart's natural function by molding to its contours.

Pacemaker 89

Pacemaker Research 89

Journal of Cardiothoracic Surgery

MAY 21, 2024

There is little literature on the use of temporary pacemakers in children with fulminant myocarditis. Therefore, we summarized the use of temporary cardiac pacemakers in children with fulminant myocarditis in.

Pacemaker 40

Pacemaker Research 40

American College of Cardiology

MARCH 1, 2024

Despite decreasing rates of permanent pacemaker implantation (PPI) after TAVR, substantial site-level variation persists, suggesting the need for quality improvement initiatives like replicating best practices from high-performing sites and increased guideline-based education, according to a recent study published in JACC: Cardiovascular Interventions. (..)

TAVR 58

TAVR Pacemaker Best Practices Cardiovascular Interventions 58

ECG Guru

AUGUST 3, 2023

Here is a Pacemaker-ECG with no signs of PM-malfunction: Beat A is an intrinsic beat (atrial fibrillation). Beat B is a pseudofusion beat. Beat C is a fully paced beat. Beat D is a fusion beat. Ventricular fusion is the electrical summation of an intrinsic beat of the heart and depolarization from a pacing stimulus.

Pacemaker 52

Pacemaker Atrial Fibrillation 52

Medical Xpress - Cardiology

FEBRUARY 14, 2024

A pacemaker is a device that helps regulate abnormal heart rates using electrical pulses. Leadless pacemakers, which are placed in the heart and don't have wires like conventional transvenous pacemakers, are becoming more popular. Heartbeats could one day help power something beyond hearts.

Pacemaker 45

Pacemaker 45

HeartRhythm

APRIL 30, 2024

Intravascular cardiac pacemakers are an established therapy for bradycardia. Recently, a new class of leadless pacemakers have mitigated some of the complications related to pacemaker leads.

Pacemaker 40

Pacemaker Bradycardia 40

HCPLive

APRIL 10, 2024

24 related to leadless pacemaker extraction and reimplantation. José López, MD, discusses a case series from ACC.24

Pacemaker 52

Pacemaker 52

HeartRhythm

APRIL 30, 2024

Leadless pacemakers have become a major breakthrough in the management of bradyarrhythmia as an attractive alternative to the standard transvenous pacemakers. We've been able to use new leadless pacemaker (Aveir VR, Abbott, Chicago, IL) since March 2023.

Pacemaker 40

Pacemaker 40

HeartRhythm

APRIL 30, 2024

Pacemaker malfunction maybe life threatening by inducing malignant arrhythmia or failure to pace in dependent patients. We report a case of syncope and injury related to device malfunction, where the only solution was exchanging the pacemaker generator.

Pacemaker 40

Pacemaker Arrhythmia 40

HeartRhythm

APRIL 30, 2024

The use of leadless pacemakers (LPM) for the treatment of high-grade conduction disease has become more prevalent. However, retrieval of the leadless pacemaker in the event of systemic infection can be challenging. Outcomes of patients with LPMs presenting with bacteremia are not well-characterized.

Pacemaker 40

Pacemaker Outcomes 40

HeartRhythm

APRIL 30, 2024

Leadless pacemakers (LPM) were developed as an alternative to transvenous pacemakers to avoid lead related complications. Despite being generally safe, complications associated with LPM implantation, such as cardiac perforation, can be life-threatening.

Pacemaker 40

Pacemaker Inpatient Hospital Outcomes 40

ECG Cases

OCTOBER 11, 2022

In this month's ECG Cases blog Dr. McLaren explains the PACER mnemonic approach to patients with pacemakers: Pacemaker spike: is it appropriately presence/absent, is there pacemaker-mediated tachycardia (apply magnet) or is there failure to pace (apply magnet to stop sensing, cardio consult)?

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Pacemaker Blog Tachycardia 52

HeartRhythm

APRIL 30, 2024

The 2nd human genetically-modified cardiac xenotransplant occurred 9/20/23 at the University of Maryland with patient requiring placement of a permanent pacemaker on post-op day three for low cardiac output with relative bradycardia. After multi-disciplinary discussion the decision was made to proceed with an epicardial approach.

Pacemaker 40

Pacemaker Bradycardia 40

Frontiers in Cardiovascular Medicine

FEBRUARY 20, 2024

In response to this problem, our group has previously developed a protocol for the generation of pure functional cardiac pacemaker cells from mouse embryonic stem cells (ESCs). As a result, we were able to generate a monolayer of pure pacemaker cells on an MEA surface that is viable and electromechanically active for weeks.

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Pacemaker Heart Rhythm Technology Arrhythmia 64

American College of Cardiology

MARCH 11, 2024

What are the long-term outcomes and performance of the Micra VR leadless pacemaker at 5 years in a worldwide post-approval registry?

Pacemaker 43

Pacemaker Outcomes Article 43

HeartRhythm

APRIL 30, 2024

Radiation exposure can cause pacemaker malfunction. However, the impact of radiation on leadless pacemakers is unknown and in-vitro studies of leadless pacemaker performance near radiation beams has not been previously studied.

Pacemaker 40

Pacemaker 40

HeartRhythm

APRIL 30, 2024

Cardiac pacemakers contain a rate-response sensor and algorithm that allows the pacing rate to adapt to changing metabolic demands.

Pacemaker 40

Pacemaker 40

HeartRhythm

APRIL 30, 2024

The AutoCaptureTM algorithm is used in pacemakers and implantable cardioverter defibrillators to perform pacing threshold tests, detect failure to capture, and adjust energy output to ensure capture beat-by-beat.

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Pacemaker Defibrillator 40

HeartRhythm

APRIL 30, 2024

years) was used by Coratomics (Indiana, PA) to generate a device that showed non inferior efficacy and longer battery life compared to lithium powered pacemakers. Within the US, plutonium 238 (half-life 87.7

Pacemaker 40

Pacemaker 40

HeartRhythm

APRIL 29, 2024

The first dual-chamber leadless pacemaker (DC-LP) system consists of two separate atrial and ventricular devices that communicate to maintain synchronous atrioventricular pacing and sensing. The initial safety and efficacy were previously reported.

Pacemaker 40

Pacemaker 40

HeartRhythm

APRIL 30, 2024

Permanent pacemaker implantation (PPI) post transcatheter aortic valve implantation (TAVI) can be complicated by cardiac implantable electronic device infection (CIED-I) as a result of bacteremia. This can lead to increased morbidity and mortality in addition to necessitating pacemaker and lead extraction.

Aortic valve 40

Aortic valve Pacemaker Aortic Outcomes 40

DAIC

DECEMBER 22, 2023

The Topaz device was implanted in a 74-year-old female patient with a pacemaker lead passing through the tricuspid annulus, classed as having New York Heart Association (NYHA) class III heart failure and presenting with torrential TR. Importantly, the performance of the pacemaker was not affected by the valve.

Tricuspid 59

Tricuspid Pacemaker Heart Valves Open-Heart Surgery 59

HeartRhythm

APRIL 30, 2024

As the utilization of leadless pacemakers (LPMs) increases, there is expanding need to manage complications of LPMs such as dislodgement and RV pacing-induced cardiomyopathy.

Pacemaker 40

Pacemaker Cardiomyopathy 40

HeartRhythm

APRIL 30, 2024

Leadless pacemakers have emerged as a viable option for managing bradyarrhythmias. We present a case of AV Micra implantation in a patient with Ebstein's anomaly.

Pacemaker 40

Pacemaker 40

HeartRhythm

FEBRUARY 29, 2024

Leadless pacemakers (LP) capable of VDD pacing allow for atrioventricular synchrony through mechanical sensing of atrial contraction. Unfortunately, mechanical sensing is less reliable and less predictable than electrical sensing.

Pacemaker 40

Pacemaker 40