Stable atrial sensing on long-term follow up of VDD pacemakers

Shah, Ashok; Aithal, Jairam; Narula, Dhiraj and Kerkar, Prafulla (2006) Stable atrial sensing on long-term follow up of VDD pacemakers. Indian Pacing and Electrophysiology Journal, 6 (4). pp. 189-193. ISSN 0972-6292

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The hemodynamic advantages of maintaining AV synchrony through AV synchronous pacing are widely known as compared to single chamber pacing. DDD pacemaker implantation entails higher cost and is technically more challenging than the VDD pacemaker. Methods Seventy one patients underwent VDD lead (Biotronik GmbH, St. Jude Medical and Medtronic Inc.) implantation at KEM hospital, Mumbai during a period of 3 years through subclavian, axillary and cephalic routes for degenerative, post-surgical or congenital high grade atrioventricular or complete heart block. They were followed up regularly for ventricular threshold and P wave amplitude of the floating atrial dipole. Results Follow up data of almost 95% of patients is available for a period of 15.8 ± 6.7 months. P wave amplitude at implant was 2.1 ± 0.7mV and at follow up 1.1 ± 0.6mV with mean ventricular threshold of <0.5V at implant and <1V at follow-up. Conclusion Implantation of a single lead VDD pacemaker is possible in all patients with symptomatic AV block and intact sinus node function without any technical complications. P wave sensing is reliable and consistent with floating atrial lead at an average follow up of 15.8 months, providing an excellent alternative to DDD pacemaker implantation.

EPrint Type:Article
Uncontrolled Keywords:VDD Lead, P wave Amplitude, Atrial Sensitivity, Atrioventricular Synchronous Pacing
Subjects:-Journal Repositories > Indian Pacing and Electrophysiology Journal
Equipment and Supplies > Surgical Equipment > Artificial Organs > Pacemaker, Artificial
Therapeutics > Cardiac Pacing, Artificial
Cardiovascular System > Heart > Heart Conduction System
ID Code:2290
Deposited By:Indian Pacing and Electrophysiology Journal
Deposited On:20 August 2007

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