Cardiac output by Modelflow® method from intra-arterial and fingertip pulse pressure profiles
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| Title: | Cardiac output by Modelflow® method from intra-arterial and fingertip pulse pressure profiles |
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| Authors: | AZABJI KENFACK MA, LADOR F, LICKER M, MOIA C, TAM, Enrico, CAPELLI, Carlo, MOREL D, FERRETTI G. |
| Source: | Clinical Science, Vol. 106, No 4 (2004) pp. 365-369 |
| Publisher Information: | Portland Press Ltd., 2004. |
| Publication Year: | 2004 |
| Subject Terms: | Adult, Male, 616.8, Blood Pressure, Blood Pressure Monitoring, Ambulatory, ddc:616.8, Blood Pressure Monitoring, Ambulatory/ methods, Catheterization, Fingers, 03 medical and health sciences, 0302 clinical medicine, Regional Blood Flow, Radial Artery, Exercise Test, Linear Models, Humans, Fingers/blood supply, Radial Artery/physiopathology, Cardiac Output, Photoplethysmography, cycling exercise, cardiac output, intra-arterial pressure, pulse pressure analysis, Modelflow®, stroke volume |
| Description: | Modelflow®, when applied to non-invasive fingertip pulse pressure recordings, is a poor predictor of cardiac output (Q, litre·min-1). The use of constants established from the aortic elastic characteristics, which differ from those of finger arteries, may introduce signal distortions, leading to errors in computing Q. We therefore hypothesized that peripheral recording of pulse pressure profiles undermines the measurement of Q with Modelflow®, so we compared Modelflow® beat-by-beat Q values obtained simultaneously non-invasively from the finger and invasively from the radial artery at rest and during exercise. Seven subjects (age, 24.0±2.9 years; weight, 81.2±12.6 kg) rested, then exercised at 50 and 100 W, carrying a catheter with a pressure head in the left radial artery and the photoplethysmographic cuff of a finger pressure device on the third and fourth fingers of the contralateral hand. Pulse pressure from both devices was recorded simultaneously and stored on a PC for subsequent Q computation. The mean values of systolic, diastolic and mean arterial pressure at rest and exercise steady state were significantly (P |
| Document Type: | Article |
| File Description: | application/pdf |
| Language: | English |
| ISSN: | 1470-8736 0143-5221 |
| DOI: | 10.1042/cs20030303 |
| Access URL: | https://pubmed.ncbi.nlm.nih.gov/14606952 https://www.ncbi.nlm.nih.gov/pubmed/14606952 https://archive-ouverte.unige.ch/unige:10168 https://portlandpress.com/clinsci/article/106/4/365/67780/Cardiac-output-by-ModelflowR-method-from-intra https://pubmed.ncbi.nlm.nih.gov/14606952/ https://www.clinsci.org/content/106/4/365 https://iris.univr.it/handle/11562/306771 https://archive-ouverte.unige.ch/unige:10168 https://archive-ouverte.unige.ch/unige:10168 https://doi.org/10.1042/cs20030303 https://hdl.handle.net/11379/25392 https://hdl.handle.net/11585/34024 |
| Accession Number: | edsair.doi.dedup.....a645dc66d1d8f68c4bf03e24f88052c4 |
| Database: | OpenAIRE |
Nájsť tento článok vo Web of Science | Abstract: | Modelflow®, when applied to non-invasive fingertip pulse pressure recordings, is a poor predictor of cardiac output (Q, litre·min-1). The use of constants established from the aortic elastic characteristics, which differ from those of finger arteries, may introduce signal distortions, leading to errors in computing Q. We therefore hypothesized that peripheral recording of pulse pressure profiles undermines the measurement of Q with Modelflow®, so we compared Modelflow® beat-by-beat Q values obtained simultaneously non-invasively from the finger and invasively from the radial artery at rest and during exercise. Seven subjects (age, 24.0±2.9 years; weight, 81.2±12.6 kg) rested, then exercised at 50 and 100 W, carrying a catheter with a pressure head in the left radial artery and the photoplethysmographic cuff of a finger pressure device on the third and fourth fingers of the contralateral hand. Pulse pressure from both devices was recorded simultaneously and stored on a PC for subsequent Q computation. The mean values of systolic, diastolic and mean arterial pressure at rest and exercise steady state were significantly (P |
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| ISSN: | 14708736 01435221 |
| DOI: | 10.1042/cs20030303 |