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Dive into the research topics where John Kassotis is active.

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Featured researches published by John Kassotis.


Journal of Cardiovascular Electrophysiology | 2003

Change in the Retrograde Atrial Activation Sequence Following Radiofrequency Modification of the Atrioventricular Node

Jose Dizon; James A. Reiffel; John Kassotis; Ian Woollett; Hasan Garan

Introduction: Despite the great success in treating AV nodal reentrant tachycardia (AVNRT) with radiofrequency modification of the AV node, the dimensions of the electrophysiologic circuit of this arrhythmia remain unclear, and simple models fail to explain all tachycardia‐related phenomena.


Pacing and Clinical Electrophysiology | 2004

Gatifloxacin induced torsades de pointes.

Alber Fteha; Elie Fteha; Salman A. Haq; Leonid M. Kozer; Barry Saul; John Kassotis

The authors present an unusual case of torsades de pointes in an elderly woman treated with intravenous gatifloxacin antibiotic therapy.


Angiology | 2005

Feasibility of dual-chamber (DDD) pacing via a single-pass (VDD) pacing lead employing a floating atrial ring (dipole): case series, future considerations, and refinements.

John Kassotis; Louis Voigt; Mbu Mongwa; C.V.R. Reddy

The objective of this study was to assess the feasibility of DDD pacing from a standard single-pass VDD pacemaker system. Over the past 2 decades significant advances have been made in the development of single-pass VDD pacing systems. These have been shown in long-term prospective studies to effectively preserve atrioventricular (AV) synchrony in patients with AV block and normal sinus node function. What remains problematic is the development of a single-pass pacing system capable of DDD pacing. Such a lead configuration would be useful in those patients with peripheral venous anomalies and in younger patients with congenital anomalies, which may require lead revisions in the future. In addition, with the increased use of resynchronization (biventricular pacing) therapy, the availability of a reliable single-pass lead will minimize operative time, enhance patient safety, and minimize the amount of hardware within the heart. The feasibility of DDD pacing via a Medtronic Capsure VDD-2 (Model #5038) pacing lead was evaluated. Twenty patients who presented with AV block and normal sinus node function were recruited for this study. Atrial pacing thresholds and sensitivities were assessed intraoperatively in the supine position with various respiratory maneuvers. Five patients who agreed to participate in long-term follow-up received a dual-chamber generator and were evaluated periodically over a 12-month period. Mean atrial sensitivity was 2.35 ±0.83 mV at the time of implantation. Effective atrial stimulation was possible in all patients at the time of implantation (mean stimulation threshold 3.08 ±1.04 V @ 0.5 ms [bipolar], 3.34 ±0.95 V @ 0.5 ms [unipolar]). Five of the 20 patients received a Kappa KDR701 generator, and atrial electrical properties were followed up over a 1-year period. There was no significant change in atrial pacing threshold or incidence of phrenic nerve stimulation over the 1-year follow-up. A standard single-pass VDD pacing lead system was capable of DDD pacing intraoperatively and during long-term follow-up. Despite higher than usual thresholds via the atrial dipole, pacemaker telemetry revealed <10% use of atrial pacing dipole over a 12-month period, which would minimally deplete the pacemaker’s battery. In addition, the telemetry confirmed appropriate sensing and pacing of the atrial dipole throughout the study period. At this time such systems can serve as back-up DDD pacing systems with further refinements required to optimize atrial thresholds in all patients.


Angiology | 2005

Repetitive monomorphic ventricular tachycardia associated with exercise--a case report.

Christopher C. Dunbar; John Kassotis; Ewa K. Heyda; Barry Saul; Aslam Khan; Jeremiah Gelles

The case of a 45-year-old man suffering from a catecholamine-sensitive ventricular tachycardia originating from the right ventricular outflow tract is reported. The authors describe a novel noninvasive treatment strategy for the management of this patient.


The American Journal of Clinical Nutrition | 2007

Caffeinated beverage intake and the risk of heart disease mortality in the elderly: a prospective analysis

James A Greenberg; Christopher C. Dunbar; Roseanne Schnoll; Rodamanthos Kokolis; Spyro Kokolis; John Kassotis


Annals of Noninvasive Electrocardiology | 2006

Fragmented left sided QRS in absence of bundle branch block: sign of left ventricular aneurysm.

Chatla V. R. Reddy; Kuruvilla Cheriparambill; Barry Saul; Majesh Makan; John Kassotis; Awaneesh Kumar; Mithilesh K. Das


American Heart Journal | 2001

Prolonged QRS duration (QRS >/=170 ms) and left axis deviation in the presence of left bundle branch block: A marker of poor left ventricular systolic function?

Mithilesh K. Das; Kuruvilla Cheriparambil; Ashwini Bedi; John Kassotis; Eng Sci D; Chatla V. R. Reddy; Majesh Makan; Christopher C. Dunbar; Barry Saul


American Journal of Cardiology | 2005

Usefulness of P-wave morphology during submaximal treadmill exercise to predict coronary artery disease

Christopher C. Dunbar; Barry Saul; John Kassotis; Lizzette Badillo


Clinical Cardiology | 2002

Cardioversion of atrial fibrillation with ibutilide: When is it most effective?

Mithilesh K. Das; Kuruvilla Cheriparambil; Ashwini Bedi; John Kassotis; Chatla V. R. Reddy; Barry Saul; Majesh Makan


Hellenic Journal of Cardiology | 2004

Multiple Cardiac Arrhythmias Detected by a Dual Chamber Implantable Cardioverter Defibrillator in a Patient with Hypertrophic Obstructive Cardiomyopathy

John Kassotis; Salman A. Haq; Mbu Mongwa

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Barry Saul

New York Methodist Hospital

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Chatla V. R. Reddy

New York Methodist Hospital

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Majesh Makan

New York Methodist Hospital

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Ashwini Bedi

New York Methodist Hospital

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Lizzette Badillo

City University of New York

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Salman A. Haq

New York Methodist Hospital

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Alber Fteha

New York Methodist Hospital

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Aslam Khan

New York Methodist Hospital

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