Document Detail


The use of diameter distension waveforms as an alternative for tonometric pressure to assess carotid blood pressure.
MedLine Citation:
PMID:  20208093     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Proper non-invasive assessment of carotid artery pressure ideally uses waveforms recorded at two anatomical locations: the brachial and the carotid artery. Calibrated diameter distension waveforms could provide a more widely applicable alternative for local arterial pressure assessment than applanation tonometry. This approach might be of particular use at the brachial artery, where the feasibility of a reliable tonometric measurement has been questioned. The aim of this study was to evaluate an approach based on distension waveforms obtained at the brachial and carotid arteries. This approach will be compared to traditional pulse pressures obtained through tonometry at both the carotid and brachial arteries (used as a reference) and the more recently proposed approach of combining tonometric readings at the brachial artery with linearly or exponentially calibrated distension curves at the carotid artery. Local brachial and carotid diameter distension and tonometry waveforms were recorded in 148 subjects (119 women; aged 19-59 years). The morphology of the waveforms was compared by the form factor and the root-mean-squared error. The difference between the reference carotid PP and the PP obtained from brachial and carotid distension waveforms was smaller (0.9 (4.9) mmHg or 2.3%) than the difference between the reference carotid PP and the estimates obtained using a tonometric and a distension waveform (-4.8 (2.5) mmHg for the approach using brachial tonometry and linearly scaled carotid distension, and 2.7 (6.8) mmHg when using exponentially scaled carotid distension waves). We therefore recommend to stick to one technique on both the brachial and the carotid artery, either tonometry or distension, when assessing carotid blood pressure non-invasively.
Authors:
Jan Kips; Floris Vanmolkot; Dries Mahieu; Sebastian Vermeersch; Isabelle Fabry; Jan de Hoon; Luc Van Bortel; Patrick Segers
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-03-05
Journal Detail:
Title:  Physiological measurement     Volume:  31     ISSN:  1361-6579     ISO Abbreviation:  Physiol Meas     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-03-19     Completed Date:  2010-06-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9306921     Medline TA:  Physiol Meas     Country:  England    
Other Details:
Languages:  eng     Pagination:  543-53     Citation Subset:  IM    
Affiliation:
Heymans Institute of Pharmacology, Ghent University Hospital, Belgium. jan.kips@ugent.be
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MeSH Terms
Descriptor/Qualifier:
Algorithms*
Blood Pressure / physiology*
Blood Pressure Determination / methods*
Brachial Artery / physiology*
Carotid Arteries / physiology*
Diagnosis, Computer-Assisted / methods*
Humans

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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