Document Detail

Non-invasive, minute-to-minute estimates of systemic arterial pressure and pulse pressure variation using radial artery tonometry.
MedLine Citation:
PMID:  23631520     Owner:  NLM     Status:  In-Data-Review    
Abstract The Tensys T-line uses tonometry to reproduce the arterial blood pressure tracing non-invasively. The purpose of this study was to assess the agreement between estimates of the T-line and an intra-arterial catheter (for both mean arterial pressure [MAP] and pulse pressure variation [PPV]) in the setting of spine surgery. Continuous blood pressure data were collected for 7507 minutes from 25 patients. Five increasingly aggressive T-line filters were applied. The mean bias for mean, diastolic and systolic blood pressure ranged from 3.4-6.4, 3.1-7.1 and 0.1-0.8 mmHg and 6.5-11.8% for PPV. Ninety-five per cent confidence intervals for mean, diastolic and systolic blood pressure ranged from 24-28, 23.1-24.7 and 33.4-35.6 mmHg for 14-21% for PPV. The limits of agreement preclude the use of the T-line for reliable estimation of MAP or PPV in spine surgery.
Douglas A Colquhoun; Katherine T Forkin; Lauren K Dunn; David L Bogdonoff; Marcel E Durieux; Robert H Thiele
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of medical engineering & technology     Volume:  37     ISSN:  1464-522X     ISO Abbreviation:  J Med Eng Technol     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-05-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7702125     Medline TA:  J Med Eng Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  197-202     Citation Subset:  IM    
Department of Anesthesiology, University of Virginia Health Sciences Center , VA, Charlottesville , USA .
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