Plethyzmography in assessment of hemodynamic results of pacemaker functions programming

• Authors: Dariusz Wojciechowski , Piotr Sionek , Kazimierz Peczalski , Dariusz Janusek
• 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.

Keywords

EN

plethyzmography; atrio -ventricular delay; stroke volume; cardiac output; pacemaker

• Publisher: Versita
• Journal: Polish Journal of Medical Physics And Engineering
• Year: 2011
• Volume: 17
• Issue: 2
• Pages: 69-73

Dates

published

1 - 1 - 2011

online

15 - 2 - 2012

Contributors

author

Dariusz Wojciechowski

• Nalecz Institute of Biocybernetics and Biomedical Engineering P, Polish Academy of Sciences, Warsaw, Poland

author

Piotr Sionek

• Nalecz Institute of Biocybernetics and Biomedical Engineering P, Polish Academy of Sciences, Warsaw, Poland

author

Kazimierz Peczalski

• Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, Warsaw, Poland

author

Dariusz Janusek

• Institute of Metrology and Biomedical Engineering, Warsaw University of Technology, Warsaw, Poland

References

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Identifiers

DOI

10.2478/v10013-011-0007-2