Method and apparatus for dual chamber cardiac analysis
First Claim
1. A method for monitoring cardiac signals comprising the steps of:
- recording a beat-by-beat atrial rate as said atrial rate varies over time when a cardiac rate exceeds a certain level;
recording a beat-by-beat ventricular rate as said ventricular rates varies over time when the ventricular or atrial rate exceeds a certain level;
plotting the atrial and ventricular rates together on the same plot over time, on a beat-by-beat basis exclusive of other information from said cardiac signals; and
providing an indication of types of tachycardia based on said plot.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for analyzing cardiac information involves recording both atrial and ventricular information related to a recognized event. This information can then be transmitted by telemetry to the physician and graphed on a common graph which plots both atrial and ventricular information over the time period of the event. This technique allows greater ability to discern the true nature of these events, including whether a given event is a sinus tachycardia due to exercise or a ventricular tachycardia which might necessitate treatment. Therefore, the present invention enables more accurate analysis of cardiac information and thereby makes possible the more appropriate application of treatment.
60 Citations
7 Claims
-
1. A method for monitoring cardiac signals comprising the steps of:
-
recording a beat-by-beat atrial rate as said atrial rate varies over time when a cardiac rate exceeds a certain level; recording a beat-by-beat ventricular rate as said ventricular rates varies over time when the ventricular or atrial rate exceeds a certain level; plotting the atrial and ventricular rates together on the same plot over time, on a beat-by-beat basis exclusive of other information from said cardiac signals; and
providing an indication of types of tachycardia based on said plot. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A system for dual chamber cardiac analysis comprising:
an implantable device including; a device for detecting a cardiac event, said cardiac event comprising a plurality of beats; means for determining an atrial rate and a ventricular rate for each beat of said said detected cardiac event; and a memory for recording said atrial and ventricular rates; a transmitter connected to said memory for transmitting said atrial and ventrical rates; and an external machine including a telemetry system for receiving said transmitted rates and a display device for simultaneously graphing points representative of said atrial and ventricular rates recorded by said memory exclusive of other information on said cardiac event versus time on a beat-by-beat basis to provide an indication of types of tachycardia based on said graphed points. - View Dependent Claims (7)
Specification