Vol. 11 No. 1 (2019): Archives of Public Health
Clinical Science

Correlation between mean arterial pressure (MAP) and brain saturation (rSO2) in patients undergoing moderate hypotensive anesthesia for septo- and rhinoplastic surgery

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  • Silvana Kraleva,
  • Biljana Shirgoska,
  • Radmila Trajkova,
  • Ivana Klisevska Ilcevska
Silvana Kraleva
General City Hospital ”8th September“ Skopje, Republic of North Macedonia
Biljana Shirgoska
Clinic for Ear, Nose and Throat Surgery, Skopje, Republic of North Macedonia
Radmila Trajkova
General City Hospital ”8th September“ Skopje, Republic of North Macedonia
Ivana Klisevska Ilcevska
General City Hospital ”8th September“ Skopje, Republic of North Macedonia
DOI: https://doi.org/10.3889/aph.2019.2859

Published 2019-04-06

Keywords

  • hypotensive anesthesia,
  • brain oxygenation,
  • general anesthesia,
  • rhinoseptoplasty

How to Cite

1.
Kraleva S, Shirgoska B, Trajkova R, Klisevska Ilcevska I. Correlation between mean arterial pressure (MAP) and brain saturation (rSO2) in patients undergoing moderate hypotensive anesthesia for septo- and rhinoplastic surgery. Arch Pub Health [Internet]. 2019 Apr. 6 [cited 2024 Dec. 18];11(1):77-88. Available from: https://id-press.eu/aph/article/view/2859
Copyright Notice

Abstract

Hypotensive anesthesia is such anesthetic technique where during general anesthesia the patient's mean arterial pressure is decreased by more than 20% of its preoperative value. Motivation: To prevent the occurrence of brain hypoxia during hypotensive anesthesia in patients undergoing septo- and rhinoplastic surgery. Aims: To determine the average values of brain saturation in awaken patients; to find the correlation between the mean arterial pressure and brain saturation during moderate hypotension, and to analyze the adverse reactions postoperatively. Materials and methods: Twenty (ASA 1) patients, anaesthetised in moderate hypotensive general anesthesia with Remifentanyl and Sevoflurane were enrolled in the study. They were observed at five times interval (T1-5): MAP, HR and rSO2, and a correlation between the parameters was determined. Results: A moderate hypotension was achieved in T4 (MAP = 69.05 ± 7.09). The average baseline values of brain saturation from 73.30 ± 5.44% to the left, 75.30 ± 5.18% to the right brain hemisphere were obtained. The curve of brain saturation had an upward trend, a peak that coincided with an introduction to anesthesia, in a further course with a downward trend. We found a mild to moderate positive correlation between MAP and rSO2 during hypotensive anesthesia, but throughout the entire period there was a higher rSO2 than the basal initial value.  Conclusion: Moderate hypotension and stable mean arterial pressure (MAP) contribute to stable brain saturation (rSO2).

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