Publications by authors named "John Rhyner"
The subcutaneous implantable cardioverter and defibrillator: advantages, limitations and future directions.
Expert Rev Cardiovasc Ther
February 2016
The totally subcutaneous implantable cardioverter and defibrillator (S-ICD) represents the most innovative development in implantable cardioverter and defibrillator therapy in the last 15 years. Its development arose out of concern for the long-term complications of transvenous devices. Clinical trials have shown that it is a safe and effective device for patients at risk of sudden cardiac death.
View Article and Find Full Text PDFCryoballoon versus radiofrequency catheter ablation for paroxysmal atrial fibrillation.
Pacing Clin Electrophysiol
April 2015
Article Synopsis
- Catheter ablation is a common treatment for atrial fibrillation, and this study compares cryoballoon ablation (CBA) and radiofrequency ablation (RFA) for treating paroxysmal AF in the U.S.
- The study analyzed 201 patients, finding that CBA had a slightly higher rate of successful pulmonary vein isolation and significantly shorter procedure and fluoroscopy times compared to RFA, with fewer incidents of cardiac perforation.
- Overall, both methods had similar success rates in maintaining freedom from AF after one year, indicating that CBA is a viable alternative to RFA.
The subcutaneous implantable cardioverter-defibrillator (S-ICD) is a new therapeutic option for patients at risk of sudden cardiac arrest. The device uses a pulse generator implanted in the lateral thoracic region and a tunneled subcutaneous electrode. Benefits of this configuration include the preservation of venous access and reduction in the risk of systemic infection, vascular injury, and lead failure.
View Article and Find Full Text PDFBackground: An electrocardiographic (ECG) screening test has been developed to identify patients being considered for a totally subcutaneous implantable cardioverter-defibrillator (S-ICD) at risk for T-wave oversensing.
Objective: The purpose of this study was to determine the proportion of potential S-ICD recipients who fail the ECG screening test and to identify predictors of failure.
Methods: Patients who already have an ICD but are not receiving antibradycardia pacing are representative of patients who might be considered for an S-ICD.