DocumentCode :
1208706
Title :
The Dynamic Pneumocardiogram: An Application of Coherent Signal Processing to Cardiovascular Measurement
Author :
Johnson, Walter K.
Author_Institution :
Inhalation Toxicology Research Institute, Lovelace Biomedical and Environmental Research Institute
Issue :
6
fYear :
1981
fDate :
6/1/1981 12:00:00 AM
Firstpage :
471
Lastpage :
475
Abstract :
The modulation of respiratory flow by cardiac function has been the subject of scientific investigation for over 100 years. The waveform of these modulations is called a pneumocardiogram (PNCG). All reported pneumocardiograms have been obtained during a state of apnea with a patent glottis maintained by voluntary control or intratracheal intubation. In this study, simple filters and coherent signal averaging techniques were applied to extract PNCG´s from unrestrained breathing patterns in man. Interpretable PNCG´s were easily collected by this method under varied conditions including sitting at rest, running in place, and resting supine. The PNCG´s observed in this study were unique to each individual and were altered by measurement conditions. The application of these techniques to other cardiovascular measurements including phonocardiograms, arterial pulses, impedence plethysmograms, etc., is discussed.
Keywords :
Biomedical measurements; Biomedical signal processing; Blood; Cardiology; Filters; Fluid flow measurement; Pulse measurements; Signal processing; Surgery; Toxicology; Adult; Cardiovascular Physiology; Heart Function Tests; Humans; Male; Respiration;
fLanguage :
English
Journal_Title :
Biomedical Engineering, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9294
Type :
jour
DOI :
10.1109/TBME.1981.324821
Filename :
4121252
Link To Document :
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