Implantation of lumenless pacing leads at the inter-atrial septum and right ventricular outflow tract with deflectable catheter-sheath
| Autor: | Rong Bai, Chi Keong Ching, Wee Siong Teo, Li Fern Hsu, Ruth Kam |
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| Rok vydání: | 2008 |
| Předmět: |
Male
Pacemaker Artificial medicine.medical_specialty Biomedical Engineering Mean R Wave Amplitude Lumen (anatomy) Catheter sheath Biochemistry Prosthesis Implantation Biomaterials Internal medicine Genetics Humans Medicine Ventricular outflow tract Repolarization cardiovascular diseases Aged Earth-Surface Processes Aged 80 and over Sick Sinus Syndrome Dual Chamber Pacemaker Equipment Safety business.industry Cardiac Pacing Artificial Middle Aged Atrial septum Electrodes Implanted Stylet cardiovascular system Cardiology Female business |
| Zdroj: | Journal of Huazhong University of Science and Technology [Medical Sciences]. 28:639-644 |
| ISSN: | 1993-1352 1672-0733 |
| Popis: | Current permanent right ventricular and right atrial endocardial pacing leads are implanted utilizing a central lumen stylet. Right ventricular apex pacing initiates an abnormal asynchronous electrical activation pattern, which results in asynchronous ventricular contraction and relaxation. When pacing from right atrial appendage, the conduction time between two atria will be prolonged, which results in heterogeneity for both depolarization and repolarization. Six patients with Class I indication for permanent pacing were implanted with either single chamber or dual chamber pacemaker. The SelectSecure 3830 4-French (Fr) lumenless lead and the SelectSite C304 8.5-Fr steerable catheter-sheath (Medtronic Inc., USA) were used. Pre-selected pacing sites included inter-atrial septum and right ventricular outflow tract, which were defined by ECG and fluoroscopic criteria. All the implanting procedures were successful without complication. Testing results (mean atrial pacing threshold: 0.87 V; mean P wave amplitude: 2.28 mV; mean ventricular pacing threshold: 0.53V; mean R wave amplitude: 8.75 mV) were satisfactory. It is concluded that implantation of a 4-Fr lumenless pacing lead by using a streerable catheter-sheath to achieve inter-atrial septum or right ventricular outflow tract pacing is safe and feasible. |
| Databáze: | OpenAIRE |
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