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Compression stockings reduce the incidence of hypotension but not that of cerebral desaturation events in the beach-chair position: A randomized controlled trial

Title
Compression stockings reduce the incidence of hypotension but not that of cerebral desaturation events in the beach-chair position: A randomized controlled trial
Authors
Woo J.H.Kim Y.J.Jeong J.-S.Chae J.S.Lee Y.R.Chon J.Y.
Ewha Authors
김윤진우재희
SCOPUS Author ID
김윤진scopus; 우재희scopus
Issue Date
2018
Journal Title
Korean Journal of Anesthesiology
ISSN
2005-6419JCR Link
Citation
Korean Journal of Anesthesiology vol. 71, no. 2, pp. 127 - 134
Keywords
Beach chair positionCerebral perfusion pressureCompression stockingsHypotensionNear-infrared spectroscopyShoulder surgery
Publisher
Korean Society of Anesthesiologists
Indexed
SCOPUS; KCI scopus
Document Type
Article
Abstract
Background: The beach-chair position (BCP) results in decreases in venous return, cardiac output, and cerebral perfusion pressure. In this randomized, prospective study, we investigated whether applying thigh-high compression stockings affected the maintenance of regional cerebral tissue oxygen saturation (rSO2) in the BCP. Methods: Patients undergoing orthopedic surgery in the BCP under general anesthesia were included and assigned randomly to the control or the compression stocking group. Appropriately sized thigh-high compression stockings were applied to the patients in the stockings group. All patients were tilted, up to 45°, throughout the operation. Non-invasive blood pressure, invasive arterial blood pressure zeroed at the external auditory meatus, and rSO2 were recorded. Results: Data were analyzed from 19 patients per group. In the BCP, the values of rSO2 and blood pressure decreased significantly compared with those at baseline, with no significant difference between the groups. The incidences of cerebral desaturation events (CDEs) were similar between the groups; however, that of hypotension was significantly lower in the compression stocking group. During 36 CDEs, the levels of rSO2 and blood pressure decreased significantly compared with those at baseline in both groups. No significant correlation was found between rSO2 and blood pressure. Conclusions: Thigh-high compression stockings reduced the incidence of hypotension but not that of CDEs. Our results suggest that other factors, beyond hypotension itself, contribute to CDEs and in other words, efforts just to reduce the incidence of hypotension may not mainly contribute to a reduction of CDEs occurrence in the BCP under general anesthesia. © The Korean Society of Anesthesiologists, 2018.
DOI
10.4097/kjae.2018.71.2.127
Appears in Collections:
의과대학 > 의학과 > Journal papers
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