Document Detail

Central venous pulse pressure analysis using an R-synchronized pressure measurement system.
MedLine Citation:
PMID:  17053869     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The information derived from central venous catheters is underused. We developed an EKG-R synchronization and averaging system to obtained distinct CVP waveforms and analyzed components of these. METHODS: Twenty-five paralyzed surgical patients undergoing CVP monitoring under mechanical ventilation were studied. CVP and EKG signals were analyzed employing our system, the mean CVP and CVP at end-diastole during expiration were compared, and CVP waveform components were measured using this system. RESULTS: CVP waveforms were clearly visualized in all patients. They showed the a peak to be 1.8+/- 0.7 mmHg, which was the highest of three peaks, and the x trough to be lower than the y trough (-1.6+/- 0.7 mmHg and -0.9+/- 0.5 mmHg, respectively), with a mean pulse pressure of 3.4 mmHg. The difference between the mean CVP and CVP at end-diastole during expiration was 0.58+/- 0.81 mmHg. CONCLUSIONS: The mean CVP can be used as an index of right ventricular preload in patients under mechanical ventilation with regular sinus rhythm. Our newly developed system is useful for clinical monitoring and for education in circulatory physiology.
Yoshihisa Fujita; Daisuke Hayashi; Shinya Wada; Naoki Yoshioka; Takeshi Yasukawa; Gunther Pestel
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Publication Detail:
Type:  Evaluation Studies; Journal Article     Date:  2006-10-20
Journal Detail:
Title:  Journal of clinical monitoring and computing     Volume:  20     ISSN:  1387-1307     ISO Abbreviation:  J Clin Monit Comput     Publication Date:  2006 Dec 
Date Detail:
Created Date:  2006-12-04     Completed Date:  2007-08-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9806357     Medline TA:  J Clin Monit Comput     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  385-9     Citation Subset:  IM    
Department of Anesthesiology & ICM, Kawasaki Medical School, 577 Matsushima, Kurashiki-city, Okayama, 701-0192, Japan.
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MeSH Terms
Blood Pressure Determination / methods*,  statistics & numerical data
Central Venous Pressure*
Electrocardiography / statistics & numerical data
Monitoring, Physiologic / methods*,  statistics & numerical data

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