Address reprint requests and correspondence to Michael J. Ackerman, MD, PhD, Division of Pediatric Cardiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905 (e-mail: ackerman.michael @mayo.edu). In the last 2 decades, the implantable cardioverterdefibrillator (ICD) has emerged as an important lifesaving cardiac device. In the past, most clinical trials involving ICDs focused primarily on th...

AIMS Stent-frame morphology of the newer-generation, balloon-expandable transcatheter heart valve (THV), the SAPIEN 3 (S3), after transcatheter aortic valve implantation (TAVI) is unknown. We evaluated the THV stent-frame morphology post TAVI of the S3 using multi-slice computed tomography (MSCT) compared with the prior-generation THV, SAPIEN XT (S-XT). METHODS AND RESULTS A total of 94 conse...

T wave oversensing (TWOS) is a common cause of inappropriate implantable cardioverter-defibrillator (ICD) therapies. Various algorithms to avoid inappropriate ICD therapy are available; however, they are not helpful to avoid TWOS. Although the reproduction of TWOS is useful to resolve the problem of TWOS, it is sometimes difficult to reproduce TWOS. We report two cases of inappropriate ICD ther...

BACKGROUND The benefit of implantable cardioverter-defibrillators (ICDs) among elderly patients is controversial and may be attenuated by nonarrhythmic death. We examined the impact of age on device-delivered therapies and outcomes after primary or secondary prevention ICD. METHODS AND RESULTS In a prospective, inclusive registry of 5399 ICD recipients in Ontario, Canada (February 2007 to Sep...

The current scope of dual chamber ICD was discussed. It seems that 50% of the implants in US and 30% in Europe consist of a dual chamber device. Factors which influence the selection of a dual-chamber device include: 1) presence of an anti-bradycardia pacing indication, 2) need to discriminate supraventricular (SVT) from ventricular tachycardia (VT), 3) prevention and therapy of SVT and 4) pres...

The secure and haemostatic implantation of the left ventricular assist device (LVAD) apex inflow cannula can sometimes be challenging, especially in the setting of an acute myocardial infarction or significant ventricular wall thinning, when the myocardial tissue may be friable and tissue strength may be compromised. In these cases, surgical complications from this site may present a challenge....

The automatic implantable cardioverter-defibrillator (ICD) is highly effective in reducing sudden death rates in patients with life-threatening ventricular tachyarrhythmias. However, the magnitude of the ability of the ICD to improve overall survival is less certain. Data supporting the contention that the ICD prolongs survival are reviewed. It is evident that the mortality benefit consequent t...

BACKGROUND Although implantable cardioverter-defibrillators (ICDs) reduce mortality in selected patients, they are also associated with potential risks. Periprocedural decision making requires understanding both benefits and risks. METHODS This qualitative study aims to understand cardiologists' and patients' perspectives about decision making surrounding ICD implantation using semi-structure...

Abstract Background Subcutaneous implantable cardioverter defibrillator (S-ICD) is a suitable alternative for transvenous ICD (TV-ICD) patients who have undergone lead extraction (TLE). Limited data are available on the outcome of S-ICD implanted after TLE. We assessed safety, efficacy and implantation TLE TV-ICD. Methods The study population consisted 36 consecutive with median age 52 (44-66) ...

BACKGROUND Eight randomized trials have evaluated whether the prophylactic use of an implantable cardioverter-defibrillator (ICD) improves survival among patients who are at risk for sudden death due to left ventricular systolic dysfunction but who have not had a life-threatening ventricular arrhythmia. We assessed the cost-effectiveness of the ICD in the populations represented in these primar...