Thus, an exact differentiation of the underlying rhythm, pacemaker rhythm, background and pacemaker-related arrhythmias or pacemaker dysfunctions (failure to sense; failure to output; failure to capture) is not possible. This seems however to be important since several investigators found that up to...
Failure to capture (despite pacer spike) Pacemaker spike present without ensuing QRS Complex May indicate lead Fracture or dislodgement, or malfunction central to the device Lead displacement is the most common cause and typically occurs in first month Other causes include cardiac ischemia or infarctio...
Pacemaker complicationscan be categorized as failure to pace, failure to capture, failure to sense, and inappropriate rate (tachyarrhythmias). Failure to sense is the most common cause ofpacemakermalfunction. Failure to pace is usually due to oversensing. Magnet application converts the pacemaker to...
Although the pacemaker may be functioning normally, in that it is behaving properly with respect to its programmed parameters, failure to capture or properly sense would not be diagnosed from the various diagrams and markers without the simultaneously recorded surface ECG.27 Laddergramming has become...
It may be safer to re-implant the entire system. A 5/6mm configuration pacemaker header connector port allows for significant tolerances when a 5mm lead is used. Consideration must be made to prevent leaks. 展开 关键词: 5/6mm pacemaker failure blood leak ...
Failure to Capture Failure to capture indicates that a pacing spike is present on the ECG without associated cardiac depolarization. Causes of failure to capture include high thresholds with an inadequately programmed output, pacemaker component failure, disconnection or dislodgment, impending battery deple...
Failure to capture lasted from 5 seconds to 30 minutes (mean 157 sec). In 15 patients the ventricular stimulation threshold was measured before and serially after cardioversion. A six-fold threshold increase was observed 3 minutes after the shock (P < 0.004) with gradual recovery to nearly ...
Health care professionals should ascertain the type of pacemaker employed and expectations for its function based on its NASPE/BPG code; monitor the cardiac rate and rhythm for evidence of pacemaker function; assess the patient for evidence of pacemaker failure or noncapture (vertigo, loss of consci...
Failure of automatic capture verification in an epicardial pacemaker system. 来自 掌桥科研 喜欢 0 阅读量: 23 作者:L Liberman,AJ Hordof,DS Hsu,RH Pass 摘要: Epicardial pacing is frequently used in pediatric patients with congenital heart disease. Automatic threshold determination has been reported ...
To date, all threshold tracking arrangements have been based upon a technique of determining when the output level has dropped below threshold, such that there is failure of capture. Consequently, pacemakers incorporating such techniques require that the patient go through a sequence where pacing is ...