05379776 is referenced by 152 patents and cites 10 patents.

An implantable dual chamber ICD and method senses atrial (A-A) and ventricular (V-V) intervals, calculates the ratio (A/V interval ratio) of A-A intervals to V-V intervals, classifies heart rhythms with V-V intervals (i) above a revert rate threshold as not tachycardia, (ii) below a high rate threshold as treatable tachycardia, (iii) between the two thresholds and below an A-dominant A/V interval ratio threshold as a non-treatable tachycardia, (iv) between the revert rate threshold and the high rate threshold and above a V-dominant threshold as treatable tachycardia and, when the heart rhythm is intermediate all four thresholds, (v) utilizes one or a combination of advanced discriminators (e.g., ventricular windowing, ventricular interval variability, sudden onset, AV-delay creep, ventricular electrogram morphology, active sensing, minute ventilation, or right ventricular pressure) to classify whether the heart rhythm is a non-treatable or a treatable tachycardia.

Title
Heart rhythm classification method, and implantable dual chamber cardioverter/defibrillator employing the same
Application Number
8/160512
Publication Number
5379776
Application Date
December 1, 1993
Publication Date
January 10, 1995
Inventor
David Mason
Kilsyth
AU
David Bassin
Coogee
AU
Anthony J Murphy
Annandale
AU
Agent
Gottlieb Rackman & Reisman
Assignee
Telectronics Pacing Systems
CO, US
IPC
A61N 1/368
View Original Source