alexa Monitoring of Sedation during Neuroaxial Blockade | OMICS International | Abstract
ISSN: 2155-6148

Journal of Anesthesia & Clinical Research
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Research Article

Monitoring of Sedation during Neuroaxial Blockade

Guerrero OrriachJose Luis1,2*, Matute Emilio3 , Alsina Estibaliz4 , Del Blanco Brezo5 and Gilsanz Fernando4,6

1Department of Anesthesiology, Virgen de la Victoria Hospital, Malaga, Spain

2PostgraduateResearch, Universidad Autónoma de Madrid, Facultad de Medicina, Spain

3Department of Anesthesiology, Hospital Sanitas La Moraleja, Madrid, Spain

4Department of Anesthesiology, Hospital La Paz, Madrid, Spain

5Department of Anesthesiology, HospitalInfanta Leonor, Madrid, Spain

6Department of Surgery, Universidad Autónoma de Madrid, Facultad de Medicina, Spain

*Corresponding Author:
José Luis Guerrero Orriach
Department of Anesthesiology
Hospital Universitario Virgen de la Victoria
Campus Universitario Teatinos, C.P. 29010, Spain
Tel: 951032051
Fax: 951032051
E-mail: [email protected]

Received date: April 17, 2013; Accepted date: June 21, 2013; Published date: June 24, 2013

Citation: Luis GO, Emilio M, Estibaliz A, Brezo DB, Fernando G (2013) Monitoring of Sedation during Neuroaxial Blockade. J Anesthe Clinic Res 4:324. doi: 10.4172/2155-6148.10003324

Copyright: © 2013 Luis GO, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Study objective: The arousal state changes during spinal anesthesia. It is not clear if BIS and others devices could monitor the induced neuroaxial blockade sedation. Our objective was evaluate BIS and entropy values when spinal anesthesia is done.

Design: We developed a prospective study. Patients: 40 patients were included in this study, ASA I-III, over 60 years old, undergoing spinal anesthesia, without premedication scheduled for orthopedics procedures.

Intervention: Spinal anesthesia was performed with the unseated volunteer in the lateral decubitus position with a 25-gauge Whitacre needle at L2-L3 space, andanesthesia was done with 12 mg of 0.5% hyperbaric bupivacaine. Patients were positioned supine for 5 min after spinal anesthesia.

Measurements: Observer’s Assessment of Alertness/Sedation OAA/S, response (RE) and state entropy (SE) and BIS, and standard hemodynamic measures.

Main results: Statistical analysis were performed by Wilcoxon test or ANOVA, p<0.05 was considered statistically significant.RE and BIS showed a better correlation with the OAA/S scale values (Pk 0.81 and 0.82) than SE (Pk 0.69). The OAA/S, RE and SE showed significative differences from basal values after 30 min of neuroaxial anesthesia (ANOVA p<0.05). BIS showed differences after 40 min (ANOVA p<0.05). There were no differences between BIS and RE values along the study (ANOVA p>0.05).

Conclusions: The spinal anesthesia decreased the cortical activity and these were founded by OAA/S scale and depth anesthetics monitors. OAA/S was a more sensitive value of this induced sedation. BIS and RE showed a better correlation with OAA/S scale than SE.

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