Method and apparatus for determining atrial lead disclocation and confirming diagnosis of atrial tachyarrhythimias
US5713932A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1996 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Oct 28, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3931
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a dual chamber cardiac stimulators, e.g. cardiac pacemaker or pacemaker/cardioverter/defibrillator (PCD) system, which relies upon the detection of atrial depolarizations or the stimulation of the atria in the performance of a defined function, a method and apparatus for determining the existence of an atrial pace/sense electrode(s) dislocation from an atrial site to a position inferior to the AV node of the heart thereby affecting a function, e.g. providing a false indication of atrial tachyarrhythmia. The determination of the occurrence of a dislocation of the atrial pace/sense electrode is effected by applying a test pace pulse to the atrial pace/sense electrode; detecting the immediately following ventricular depolarization from a ventricular sense electrode; measuring the interval between the delivered atrial pace pulse and the detected ventricular depolarization; comparing the measured interval to a threshold AV interval; and determining that the atrial pace/sense electrode is in contact with the right atrium if the measured interval is longer than the threshold AV interval. Preferably, the determination is effected by: providing a first signal when the measured AV interva…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.