Electrical dyssynchrony (cardiac resynchronization index; CRI) was measured at each setting using a multilead ECG system placed over the anterior and posterior torso. Biventricular pacing, which included multiple interventricular delays, was also conducted in a subset of 10 patients. Results: When ...
In other words, the dual chamber pacemaker knows when both sensed and paced events have occurred in both atrial and ventricular sensing and pacing channels since all sensing and pacing control is happening in the one device, i.e., the dual chamber pacemaker. Intracardiac pacemakers have been ...
METHODS :Firstly, a simple deterministic measurement matrix (SDMM) is used to perform random projection operation on the ECG signals to complete the compression. Then, we use the transpose of the SDMM to perform transpose projection operation on the compressed signals in the cloud to obtain the ...
A subsequent 12 lead ECG in the ICU revealed atrial pacing and ventricular sensing (ApVs) (Fig. 1-A) while chest x-ray showed normal lead positions in right arial appendage and right ventricular apex. The sensed and paced AV delay was 170 msec and 200 msec respectively, with a lower ...
The terms RRI and δRRi as used herein refer generally to a measurement of ventricular cycle length (VCL) and the difference between two consecutive VCL measurements, respectively, whether the VCL measurements were derived from a series of sensed R-waves from a cardiac electrical signal or a ...
He now presented to our pacemaker clinic where his ECG done showed two types of paced complexes. The first few complexes were consistent with atrial sensed right ventricular apical pacing with left superior axis. Later complexes showed loss of atrial sensing with pacing from right ventricular out...
The outputs of the atrial and ventricular sense amplifiers,82and84, are connected to the microcontroller60which, in turn, inhibit the atrial and ventricular pulse generators,70and72, respectively, in a demand fashion whenever cardiac activity is sensed in the respective chambers. The sense amplifiers...
Baseline PR interval was 204 ms ± 32 ms and programmed AV intervals (DDD/R) were 200 ms ± 50 ms (paced)/167 ms ± 54 ms (sensed). Cum%AP was similar between MVP and DDD/R (47.9 ± 37 vs 46.3 ± 36). Cumulative percent ventricular pacing was significantly lower in MVP vs DDD...
METHODS :Firstly, a simple deterministic measurement matrix (SDMM) is used to perform random projection operation on the ECG signals to complete the compression. Then, we use the transpose of the SDMM to perform transpose projection operation on the compressed signals in the cloud to obtain the ...