A cardiac rhythm management system selects an atrioventricular (A-V) delay based on a time-interval between an atrial depolarization and mitral valve closure (MVC). For several different A-V delays, the system measures time intervals between atrial depolarizations (i.e., sensed or paced P-...
Cardiac pacing interferes with this normal cycle because typical paced beats are not initiated at the sinoatrial node (A) as native beats are. A typical atrial beat, therefore, is required to follow an abnormal depolarization pathway in order to reach the ventricles. ...
A maximum pacing rate limiter for use in adaptive rate pacing in conjunction with a cardiac rhythm management system for a heart. The maximum pacing rate limiter may function to measure an interval, termed the ERT interval, between a paced ventricular evoked response and a T-wave. The maximum...
PURPOSE: A discordant ST-segment elevation [greater than or equal to] 5 millimeters is the most specific electrocardiographic criterion for acute myocardial infarction (AMI) in patients with ventricular paced rhythm (VPR). The purpose of our study is to assess the a...
Implantable pacemakers are widely used for managing patients with certain cardiac rhythm abnormalities to reduce mortality and morbidity while improving quality of life. However, for ECG devices that have to analyze the surface ECG signals, it has always been a major challenge to maintain a high lev...
Cardiac function may be compromised by a variety of factors. For example, the coronary artery disease, hypertensive heart disease or dilated cardiomyopathy may impair the heart's hemodynamics on a chronic basis. In addition, patients suffering from AV junctional disrhythmias, PVC induced atrial fibri...
As indicated above, biventricular (biV) pacemaker uses pacing both left and right ventricles to maximize the cardiac output. The two pacemaker pulses (pp) can be synchronous or non-synchronous. It is generally possible to recognize non-synchronous biV pulses from surface ECG with a data acquisiti...
A device and method for cardiac rhythm management in which a heart chamber is paced in accordance with sense signals from the opposite chamber or other distant cardiac site. The method is particularly useful in delivering cardiac resynch... AP Kramer,JE Stahmann 被引量: 0发表: 0年 ...
A cardiac rhythm management system selects an atrioventricular (A-V) delay based on a time-interval between an atrial depolarization and mitral valve closure (MVC). For several different A-V delays, the system measures time intervals between atrial depolarizations (i.e., sensed or paced P-...