Medical Xpress - Cardiology

MAY 18, 2024

Wireless implantable cardioverter-defibrillators (ICDs) eliminate the lead-related complications that come with a wired ICD, but they are unsuitable for patients with ventricular tachycardia, when the heart beats too quickly, or bradycardia, when the resting heart rate is seen as low.

Bradycardia 101

Bradycardia Defibrillator Tachycardia 101

HeartRhythm

AUGUST 27, 2024

Normally-functioning implantable cardioverter-defibrillators (ICDs) with intact lead systems occasionally fail to deliver therapy for ventricular tachycardia/ fibrillation (VT/VF) or deliver it only after clinically-significant delays (“failure-to-treat”).

Defibrillator 40

Defibrillator Tachycardia 40

ECG Guru

DECEMBER 21, 2023

If ventricular tachycardia occurs in an Implantable Cardioverter Defibrillator (ICD) wearer, the ICD can combat this with 2 different forms of therapy, provided these are activated (which can be done using a programming device). First, the ICD attempts to override the tachycardia. The fastest pacemaker gets control of the heart.

Tachycardia 51

Tachycardia Defibrillator Pacemaker 51

Dr. Smith's ECG Blog

JULY 25, 2024

He was defibrillated into VT. He then underwent dual sequential defibrillation into asystole. See these related cases: Cardiac arrest, defibrillated, diffuse ST depression and ST Elevation in aVR. Description of today's ECG findings ( Sinus tachycardia with diffuse ST depression and ST elevation in aVR ) — is diagnostic of DSI.

Cardiac Arrest 124

Cardiac Arrest Ischemia Tachycardia Defibrillator 124

ECG Guru

DECEMBER 18, 2023

If ventricular tachycardia occurs in an Implantable Cardioverter Defibrillator (ICD) wearer, the ICD can combat this with 2 different forms of therapy, provided these are activated (which can be done using a programming device). First, the ICD attempts to override the tachycardia. The fastest pacemaker gets control of the heart.

Tachycardia 52

Tachycardia Defibrillator Pacemaker 52

HeartRhythm

APRIL 30, 2024

Subcutaneous implantable cardioverter-defibrillators (S-ICDs) alleviate many issues associated with a transvenous system, while having similar efficacy to transvenous ICDs at preventing sudden cardiac death. However, S-ICDs have higher rates of shocks due to a lack of anti-tachycardia pacing (ATP).

Defibrillator 40

Defibrillator Tachycardia Sudden Cardiac Death 40

HeartRhythm

APRIL 30, 2024

Inappropriate shocks of implantable cardioverter-defibrillator (ICDs) are rare, with an incidence of 1.6% The common causes of inappropriate shocks include oversensing of noise or supraventricular tachycardia. over a 2-year follow-up period, but they are linked to poor prognosis.

Defibrillator 40

Defibrillator Tachycardia 40

Medical Xpress - Cardiology

APRIL 10, 2024

The late-breaking science was presented at EHRA 2024, a scientific congress of the European Society of Cardiology (ESC).

Ablation 74

Ablation Hospital Tachycardia Defibrillator 74

Dr. Smith's ECG Blog

JANUARY 2, 2025

Because she has cardiomyopathy and ventricular dysrhythmias, the pacer included an Implanted Cardioverter-Defibrillator (ICD) Echo 6 days later after CRT: Normal estimated left ventricular ejection fraction. Even with tachycardia and a paced QRS duration of ~0.16 No wall motion abnormality. J Am Coll Cardiol.

Tachycardia 116

Tachycardia Cardiomyopathy Blog Bradycardia 116

Ken Grauer, MD

JUNE 27, 2024

IMPRESSION: Given the presence of a wide tachycardia — with 2 distinct QRS morphologies, and no sign of P waves — a presumed diagnosis of B i D irectional Ventricular Tachycardia has to be made. Despite prolonged resuscitation with multiple defibrillation attempts — the patient could not be saved. =

Blog 160

Blog Cardiac Arrest Sudden Cardiac Death Tachycardia 160

DAIC

SEPTEMBER 5, 2024

2, 2024 – Medtronic recently shared long-term results from the global Extravascular Implantable Cardioverter Defibrillator (EV ICD) Pivotal Trial, reinforcing the performance and safety of the EV-ICD system. It works by briefly delivering pacing pulses to the heart at a rate faster than the tachycardia.

Defibrillator 52

Defibrillator Sudden Cardiac Death Quality of Life Tachycardia 52

Dr. Smith's ECG Blog

JANUARY 23, 2024

Shortly after isoprenalin infusion was initiated, there were short runs of ventricular tachycardia. She was given CRT-D (Cardiac Resynchronization Therapy-Defibrillator). During the next 24 hours, she experienced periods of complete AV block with a ventricular escape rhythm in the 20s. She was started on isoprenalin (isoproterenol).

Tachycardia 107

Tachycardia Arrhythmia Heart Disease Sudden Cardiac Death 107

Heart BMJ

MAY 23, 2024

He had previously undergone the placement of a dual-chamber implantable cardioverter-defibrillator for atrioventricular block and ventricular tachycardia (VT). He had a background of arrhythmic right ventricular cardiomyopathy.

Tachycardia 52

Tachycardia Defibrillator Cardiomyopathy 52

HeartRhythm

MAY 7, 2024

Implantable cardioverter defibrillator (ICD) prevents sudden cardiac death (SCD) in patients with ischemic cardiomyopathy (ICM). Catheter ablation has been shown to effectively reduce ventricular tachycardia (VT) recurrence, yet its efficacy in patients without an ICD implantation remains uncertain.

Sudden Cardiac Death 45

Sudden Cardiac Death Tachycardia Cardiomyopathy Ablation 45

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

All About Cardiovascular System and Disorders

MARCH 17, 2024

Here is the transcript of the video: Implantable defibrillator is an important life saving device. Then, why is it mentioned that, implanting a defibrillator soon after an acute myocardial infarction, in those with left ventricular dysfunction and prone for ventricular arrhythmias and sudden cardiac death, is not useful?

Myocardial Infarction 52

Myocardial Infarction Defibrillator Sudden Cardiac Death Arrhythmia 52

HeartRhythm

APRIL 30, 2024

Patients with the most common channelopathies: long QT syndrome (LQTS) and catecholaminergic polymorphic ventricular tachycardia (CPVT) exhibit marked heterogeneity, necessitating both evidenced-based and individualized therapeutic approaches.

Defibrillator 40

Defibrillator Pharmacology Tachycardia 40

HeartRhythm

MAY 15, 2024

Subcutaneous implantable cardioverter defibrillators (S-ICD) are a safe and effective alternative to transvenous ICDs for patients at risk for ventricular tachyarrhythmias.1 1 A major limitation of an S-ICD is its inability to deliver anti-tachycardia pacing (ATP) for monomorphic ventricular tachycardia (MMVT).

Defibrillator 40

Defibrillator Tachycardia Pacemaker 40

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. C ASE C onclusion : I lack detailed follow-up from today's case — other than knowing that the Atrial Tachycardia was controlled.

Blog 78

Blog Tachycardia Arrhythmia Atrial Flutter 78

HeartRhythm

APRIL 30, 2024

For the past four decades, implantable cardioverter defibrillator (ICD) therapy has become the standard of care for preventing sudden cardiac death in high-risk individuals. The rate of ICD implantation has risen due to the increasing population age and the growing prevalence of cardiac arrhythmias.

Atrial Fibrillation 40

Atrial Fibrillation Defibrillator Sudden Cardiac Death Tachycardia 40

HeartRhythm

APRIL 30, 2024

In patients with implantable cardioverter defibrillator (ICD) inappropriate device therapy (IDT) is associated with worse outcomes and reduced quality of life (QoL). IDT is not rarely induced by misinterpretation of supraventricular tachycardia, detected by the ICD as atrial high rate episodes (AHRE).

Defibrillator 40

Defibrillator Quality of Life Tachycardia Stroke 40

HeartRhythm

JULY 11, 2024

An 18-year-old male with arrhythmogenic cardiomyopathy was referred for catheter ablation of ventricular tachycardia after experiencing appropriate implantable cardioverter-defibrillator (ICD) shock. Six months prior, he had undergone uncomplicated implantation of an extravascular ICD (EV-ICD) [1].

Defibrillator 40

Defibrillator Ablation Tachycardia Cardiomyopathy 40

HeartRhythm

APRIL 30, 2024

Patients suffering recurrent Ventricular Tachycardia (VT) despite antiarrhythmic drugs (AAD), defibrillator (ICD) and catheter ablation (CA) remain at significant risk of morbidity and mortality.

Tachycardia 40

Tachycardia Defibrillator Ablation 40

HeartRhythm

APRIL 30, 2024

Patients suffering recurrent Ventricular Tachycardia (VT) despite antiarrhythmic drugs, defibrillator and ablation remain at significant risk of morbidity and mortality. Although cardiac radioablation (RA) has demonstrated promise, results are heterogenous.

Tachycardia 40

Tachycardia Ablation Defibrillator 40

HeartRhythm

APRIL 30, 2024

Non-sustained ventricular tachycardia (NSVT) is a predictor of sustained ventricular arrhythmias (VA) among implantable cardioverter defibrillator (ICD) recipients. We hypothesized that that a history of NSVT in primary prevention ICD recipients may parallel the risk profile observed in secondary prevention ICD recipients.

Tachycardia 40

Tachycardia Defibrillator Arrhythmia Outcomes 40

HeartRhythm

NOVEMBER 16, 2024

Patients with repaired tetralogy of Fallot are at risk of ventricular tachycardia (VT) and sudden cardiac death. Historically, risk stratification electrophysiologic studies involved programmed ventricular stimulation with VT induction guiding implantable cardioverter-defibrillator (ICD) implantation or VT ablation.

Sudden Cardiac Death 40

Sudden Cardiac Death Tachycardia Ablation Tricuspid 40

Dr. Smith's ECG Blog

JUNE 9, 2024

We also gave insulin and furosemide (which take much longer to have their effect) After episodes of asystole and VF with defibrillation, she obtained ROSC and this 12-lead was recorded: The monitor around this time was NOT showing a very wide complex What do you think? Large calcium doses for hyperkalemia, and VT in hyperkalemia.

Cardiac Arrest 101

Cardiac Arrest Defibrillator Cardiac Function Tachycardia 101

Journal of Cardiovascular Electrophysiology

FEBRUARY 10, 2025

We sought to determine predictors of RV pacing in patients who did not have a pacing indication at the time of initial ICD implant. The outcome was defined as the development of >20% RV pacing averaged over any continuous 90-day period within 24 months after the ICD implant.

Defibrillator 40

Defibrillator Cardiac Arrest Tachycardia Hypertension 40

Journal of Cardiovascular Electrophysiology

DECEMBER 18, 2024

ABSTRACT The extravascular implantable cardioverter-defibrillator (EV-ICD) was developed to overcome complications associated with transvenous leads while being able to deliver anti-tachycardia pacing (ATP). The lead is implanted in the substernal space, which makes extraction a cautious procedure.

Defibrillator 40

Defibrillator Tachycardia 40

HeartRhythm

APRIL 30, 2024

Short-long-short (S-L-S) electrocardiographic cycle length patterns are associated with incidence of ventricular tachycardia (VT) and ventricular fibrillation (VF). It is also recognised that pacemakers can facilitate these cycle length sequences, and that the observation of these sequences can predict future VT/VF events.

Coronary Artery Bypass Graft 40

Coronary Artery Bypass Graft Tachycardia Defibrillator Pacemaker 40

Open Heart

AUGUST 25, 2023

Background Consensus guidelines support the use of implanted cardioverter-defibrillators (ICD) for primary prevention of sudden cardiac death in patients with either non-ischaemic or ischaemic cardiomyopathy with left ventricular ejection fraction (LVEF) ≤35%. vs 65.4%, p<0.0001), more often white (87.5% vs 38.2%, p<0.0001).

Defibrillator 52

Defibrillator Sudden Cardiac Death Myocardial Infarction Echocardiogram 52

Journal of Cardiovascular Electrophysiology

FEBRUARY 7, 2024

Progressive decline across periods in mortality rates among patients with implantable cardioverter-defibrillator (ICD). Chagas disease (ChD) was associated with increased rates of ventricular tachycardia and ventricular fibrillation in ICD patients only in the initial two periods, but there was no statistical difference in the last period.

Defibrillator 40

Defibrillator Sudden Cardiac Death Tachycardia Public Health 40

HeartRhythm

JUNE 3, 2024

Recent advancements in catheter ablation for structural ventricular tachycardia (VT), such as high-density mapping and cardiac imaging-based detection of target areas, have significantly improved the efficacy of ablation procedures. These developments are likely to broaden the treatment scope to include patients with recurrent VT episodes.

Sudden Cardiac Death 40

Sudden Cardiac Death Tachycardia Ablation Defibrillator 40

American College of Cardiology

OCTOBER 11, 2024

The goal of the APPRAISE ATP trial was to determine the efficacy of antitachycardia pacing (ATP) in terminating ventricular tachycardia (VT) compared with a shock-only strategy in patients with a primary prevention implantable cardioverter-defibrillator (ICD).

Defibrillator 53

Defibrillator Tachycardia Article 53

HeartRhythm

APRIL 30, 2024

Implantable cardioverter defibrillators (ICDs) may terminate ventricular tachycardia (VT) with antitachycardia pacing (ATP) delivered to a lead in the right ventricle (RV). Fast VTs are difficult to terminate with ATP at a single RV site.

Tachycardia 40

Tachycardia Defibrillator 40

Dr. Smith's ECG Blog

OCTOBER 18, 2023

The above ECGs show the initiation and continuation of a polymorphic ventricular tachycardia. Polymorphic ventricular tachycardia can be ischemic, catecholaminergic or related to QT prolongation. She spontaneously converted (Defibrillation was not performed). Below are two ECGs from the telemetry monitoring.

Cardiac Arrest 122

Cardiac Arrest Tachycardia Cardiomyopathy Bradycardia 122

Circulation

OCTOBER 27, 2023

BACKGROUND:In severely affected patients with catecholaminergic polymorphic ventricular tachycardia, beta-blockers are often insufficiently protective. The primary end point was AEs, defined as sudden cardiac death, sudden cardiac arrest, appropriate implantable cardioverter defibrillator shock, and arrhythmic syncope.

Tachycardia 40

Tachycardia Sudden Cardiac Death Defibrillator Cardiac Arrest 40