Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1997-05-19
1999-08-31
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
607 17, A61N 1362
Patent
active
059447435
ABSTRACT:
There is provided a pacemaker system and method for enabling special rate control for patients who have specially recognized conditions, e.g., patients who are post-ablation and thus are susceptible to bradycardia-dependent ventricular fibrillation or other arrhythmias. In a preferred embodiment, the pacemaker has a special function rate control algorithm which, for the post-ablation patient, commences pacing with a lower rate limit at a high start value of around 80-100 bpm, and decays the lower rate limit down to an end value of about 60-70 bpm over a duration of about a month. Additionally, the pacemaker is provided with one or more selectable special function rate response algorithms, for enabling higher rate response to patient exercise and demand for increase cardiac output. The combination of the gradual decay of lower rate limit over the programmable duration as well as the specially programmable rate response enables optimization of pacing so as to prevent arrhythmias.
REFERENCES:
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Peters, Rene J. H., et al., "Bradycardia Dependent QT Prolongation and Ventricular Fibrillation Following Catheter Ablation of the Atrioventricular Junction With Radiofrequency Energy," Pace, vol. 17, Jun. 1994.
Jordaens, L., et al., "Sudden Death and Long-Term Survival After Ablation of the Atrioventricular Junction," Eur. J.C.P.E., 1993, vol. 3, No. 3, pp. 232-2237.
Geelen, Peter, et al., "Ventricular Fibrillation and Sudden Death After Radiofrequency Catheter Ablation of the Atrioventricular Junction," Accepted for publication in Pace 1996.
Jamie Beth Conti, et al., "Prevention of Polymorphic Ventricular Tachycardia After AV Junction Ablation," Abstracts, JACC, Feb. 1996, 376A.
Jaro Michael J.
Kamm William E.
Patton Harold
Schaetzle Kennedy J.
Vitatron Medical B. V.
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