Impact of monitoring cerebral oxygen saturation on the outcome of patients undergoing open heart surgery

Aims and Objectives: We studied the usefulness of regional cerebral oxygen saturation (rSO 2 ) monitoring during cardiopulmonary bypass (CPB) and evaluated effects of cerebral oxygen desaturation on the postoperative neurological outcome. Materials and Methods: 100 patients were randomly allocated t...

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Main Authors: B S Mohandas, A M Jagadeesh, S B Vikram
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2013-01-01
Series:Annals of Cardiac Anaesthesia
Subjects:
Online Access:http://www.annals.in/article.asp?issn=0971-9784;year=2013;volume=16;issue=2;spage=102;epage=106;aulast=Mohandas
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author B S Mohandas
A M Jagadeesh
S B Vikram
author_facet B S Mohandas
A M Jagadeesh
S B Vikram
author_sort B S Mohandas
collection DOAJ
description Aims and Objectives: We studied the usefulness of regional cerebral oxygen saturation (rSO 2 ) monitoring during cardiopulmonary bypass (CPB) and evaluated effects of cerebral oxygen desaturation on the postoperative neurological outcome. Materials and Methods: 100 patients were randomly allocated to either control or intervention group. In the control group rSO 2 was recorded continuously, but the attending anesthesiologist was blinded. In the intervention group specific interventions were initiated in case of cerebral desaturation. Neurocognitive testing was done using a simplified antisaccadic eye movement test (ASEM) and mini-mental state examination (MMSE). Data was analyzed using Chi-square test, and unpaired t-test. Results: In both the groups rSO 2 declined during CPB. The decrease in rSO 2 was significant ( P < 0.001) in the control group compared to the intervention group. In the intervention group the rSO 2 mainly responded to an increase in mean arterial pressure. The area under the curve below threshold rSO 2 was significantly more ( P < 0.0001) in the control group compared to intervention group and a significant decrease in the MMSE and ASEM scores occurred in control group at one week and three months postoperatively. Conclusions: Monitoring of rSO 2 during CPB can significantly decrease the incidence of postoperative neurocognitive decline.
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spelling doaj.art-8c19e7f79ddc41209e57fc1de686ff822022-12-22T00:18:26ZengWolters Kluwer Medknow PublicationsAnnals of Cardiac Anaesthesia0971-97842013-01-0116210210610.4103/0971-9784.109740Impact of monitoring cerebral oxygen saturation on the outcome of patients undergoing open heart surgeryB S MohandasA M JagadeeshS B VikramAims and Objectives: We studied the usefulness of regional cerebral oxygen saturation (rSO 2 ) monitoring during cardiopulmonary bypass (CPB) and evaluated effects of cerebral oxygen desaturation on the postoperative neurological outcome. Materials and Methods: 100 patients were randomly allocated to either control or intervention group. In the control group rSO 2 was recorded continuously, but the attending anesthesiologist was blinded. In the intervention group specific interventions were initiated in case of cerebral desaturation. Neurocognitive testing was done using a simplified antisaccadic eye movement test (ASEM) and mini-mental state examination (MMSE). Data was analyzed using Chi-square test, and unpaired t-test. Results: In both the groups rSO 2 declined during CPB. The decrease in rSO 2 was significant ( P < 0.001) in the control group compared to the intervention group. In the intervention group the rSO 2 mainly responded to an increase in mean arterial pressure. The area under the curve below threshold rSO 2 was significantly more ( P < 0.0001) in the control group compared to intervention group and a significant decrease in the MMSE and ASEM scores occurred in control group at one week and three months postoperatively. Conclusions: Monitoring of rSO 2 during CPB can significantly decrease the incidence of postoperative neurocognitive decline.http://www.annals.in/article.asp?issn=0971-9784;year=2013;volume=16;issue=2;spage=102;epage=106;aulast=MohandasCardiopulmonary bypassCerebral oximetryCognitive dysfunctionMini-mental state examinationAntisaccadic eye movement test
spellingShingle B S Mohandas
A M Jagadeesh
S B Vikram
Impact of monitoring cerebral oxygen saturation on the outcome of patients undergoing open heart surgery
Annals of Cardiac Anaesthesia
Cardiopulmonary bypass
Cerebral oximetry
Cognitive dysfunction
Mini-mental state examination
Antisaccadic eye movement test
title Impact of monitoring cerebral oxygen saturation on the outcome of patients undergoing open heart surgery
title_full Impact of monitoring cerebral oxygen saturation on the outcome of patients undergoing open heart surgery
title_fullStr Impact of monitoring cerebral oxygen saturation on the outcome of patients undergoing open heart surgery
title_full_unstemmed Impact of monitoring cerebral oxygen saturation on the outcome of patients undergoing open heart surgery
title_short Impact of monitoring cerebral oxygen saturation on the outcome of patients undergoing open heart surgery
title_sort impact of monitoring cerebral oxygen saturation on the outcome of patients undergoing open heart surgery
topic Cardiopulmonary bypass
Cerebral oximetry
Cognitive dysfunction
Mini-mental state examination
Antisaccadic eye movement test
url http://www.annals.in/article.asp?issn=0971-9784;year=2013;volume=16;issue=2;spage=102;epage=106;aulast=Mohandas
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AT sbvikram impactofmonitoringcerebraloxygensaturationontheoutcomeofpatientsundergoingopenheartsurgery