Users Online: 4356 Home Print this page Email this page Small font sizeDefault font sizeIncrease font size  
Home | About us | Editorial board | Search | Ahead of print | Current issue | Archives | Submit article | Instructions | Subscribe | Contacts | Login 

RSACP wishes to inform that it shall be discontinuing the dispatch of print copy of JOACP to it's Life members. The print copy of JOACP will be posted only to those life members who send us a written confirmation for continuation of print copy.
Kindly email your affirmation for print copies to preferably by 30th June 2019.

Year : 2018  |  Volume : 34  |  Issue : 4  |  Page : 503-506

Evaluation of cerebral oxygen saturation during hypotensive anesthesia in functional endoscopic sinus surgery

1 Tracheal Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2 Department of Anesthesiology and Critical Care, Iran University of Medical Sciences, Tehran, Iran
3 Anesthesiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4 Chronic Respiratory Diseases Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
5 Lung Transplantation Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran

Correspondence Address:
Alireza Jahangirifard
Masih Daneshvari Hospital, Darabad Avenue, Shahid Bahonar Roundabout, Tehran
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/joacp.JOACP_248_17

Rights and Permissions

Background and Aims: Controlled hypotensive anesthesia in endoscopic sinus surgery would provide a clean surgical field. Cerebral oxygen saturation (ScO2) is important in endoscopic sinus surgery patients and it may be low during controlled hypotension.The aim of the present study was to assess ScO2 in these patients. Material and Methods: In this observational study, 41 patients who underwent endoscopic sinus surgery with hypotensive anesthesia were enrolled for the study and all of the patients received the same anesthetic medication, nitroglycerin for controlled hypotension. Variables were measured prior to surgery, after induction of anesthesia, 5 min, and every 30 min after controlled hypotension. Near-infrared spectroscopy was used for ScO2 evaluation. Mean arterial blood pressure (MAP) was maintained at 55–60 mmHg in the surgical duration. We used t-test, Wilcoxon, and repeated measures analysis of variance (ANOVA). We examined the cross-correlation functions of the time series data between end-tidal carbon dioxide (ETCO2)/MAP and ScO2. Results: The mean of intraoperative ScO2 was not significantly different from the baseline evaluation (P > 0.05). ETCO2 was cross correlated with current ScO2 [r: 0.618, confidence interval (CI) 95%: 0.46–0.78]. We found moderate cross correlation between the MAP and current ScO2 (r: 0.728, CI 95%: 0.56–0.88). About 92% of the patients recovered within 30 min. Recovery time was associated with intraoperative MAP (P: 0.004, r: 0.438), intraoperative ETCO2 (P: 0.003, r: 0.450), and ScO2(P: 0.026, r: 0.348). Conclusions: Based on our findings, the assessment of ScO2 and maintained MAP >55 mmHg may provide safe conditions for endoscopic sinus surgery.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded115    
    Comments [Add]    

Recommend this journal