Paper Info
Title
Fingertip photoplethysmographic waveform variability and systemic vascular resistance in intensive care unit patients.
Abstract
Low frequency variability in the fingertip photoplethysmogram (PPG) waveform has been utilized for inferring sympathetic vascular control, but its relationship with a quantitative measure of vascular tone has not been established. In this study, we examined the association between fingertip PPG waveform variability (PPGV) and systemic vascular resistance (SVR) obtained from thermodilution cardiac output (CO) and intra-arterial pressure measurements in 48 post cardiac surgery intensive care unit patients. Among the hemodynamic measurements, both CO (P P nu) of PPGV. The LFnu of baseline PPGV had moderate but significant positive correlation with SVR (r = 0.54, P −5 with sensitivity of 59% and specificity of 95%. The results have provided quantitative evidence to confirm the link between fingertip PPGV and sympathetic vascular control. Suppression of LF vasomotor waves leading to dominance of respiration-related HF fluctuations in the fingertip circulation was a specific (though not sensitive) marker of systemic vasodilatation, which could be potentially utilized for the assessment of critical care patients.
Year
DOI
Venue
2011
10.1007/s11517-011-0749-8
Med. Biol. Engineering and Computing
Keywords
Field
DocType
pressure measurement,cardiac output,systemic vascular resistance,low frequency
Sympathetic nervous system,Intensive care unit,Vasomotor,Artificial intelligence,Surgery,Vascular resistance,Vasodilation,Medicine,Computer vision,Photoplethysmogram,Internal medicine,Cardiology,Cardiac surgery,Cardiac output
Journal
Volume
Issue
ISSN
49
8
1741-0444
Citations 
PageRank 
References 
1
0.41
3
Authors
9
Name
Order
Citations
PageRank
Paul M Middleton182.16
Gregory S H Chan293.46
Elizabeth Steel341.08
Philip Malouf441.08
Christopher Critoph510.41
Gordon Flynn610.41
Emma O'Lone710.41
Branko G. Celler850281.99
nigel h lovell9618118.68