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2011 | 17 | 2 | 69-73
Article title

Plethyzmography in assessment of hemodynamic results of pacemaker functions programming

Content
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Languages of publication
EN
Abstracts
EN
The paper presents potential role of plethyzmography in optimization of heart hemodynamic function during pacemaker programming.The assessment of optimal stroke volume in patients, with implanted dual chamber pacemaker (DDD), by plethyzmography was a goal of the study. The data were collected during pacing rhythm. 20 patients (8 female and 12 male, average 77.4+/-4.6 years) with dual chamber pacemaker (DDD) and with pacing rhythm during routine pacemaker control and study tests were incorporated in the study group. Hemodynamic parameters were assessed during modification of atrio-ventricular delay (AVD) for pacing rhythm of 70 bpm and 90 bpm. The time of atrioventricular was programmed with 20 ms steps within range 100-200 ms and data were recorded with two minutes delay between two consecutive measurements. Stroke volume (SV) and cardiac output (CO) were calculated from plethyzmographic signal by using Beatscope software (TNO Holand). Highest SV calculated for given pacing rhythm was named optimal stroke volume (OSV) and consequently highest cardiac output was named maximal cardiac output (MCO). The time of atrio-ventricular delay for OSV was named optimal atrioventricular delay (OAVD).The results have showed: mean values of OAVD for 70 bpm - 152+/-33 ms and for 90 bpm -149+/-35 ms, shortening of the mean OAVD time caused by increase of pacing rate from 70 bpm to 90 bpm what resulted in statistically significant decrease of OSV with not statistically significant increase of MCO. The analysis of consecutive patients revealed three types of response to increase of pacing rhythm: 1. typical-shortening of OAVD, 2. neutral-no change of OAVD and 3.atypical-lengthening of OAVD.
Publisher
Year
Volume
17
Issue
2
Pages
69-73
Physical description
Dates
published
1 - 1 - 2011
online
15 - 2 - 2012
References
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  • Martin U. Braun, Andreas Schnabel, Thomas Rauwolf, Matthias Schulze and Ruth H. Strasser. Impedance Cardiography as a Noninvasive Technique for Atrioventricular Interval Optimization in Cardiac Resynchronization Therapy. Journal of Interventional Cardiac ElectrophysiologyVolume 13, Number 3 / September, 2005, p. 223-229.
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_v10013-011-0007-2
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