Medicinski pregled 2012 Volume 65, Issue 3-4, Pages: 111-114
https://doi.org/10.2298/MPNS1204111R
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Awareness detection in anaesthesia during otorhino-maxillofacial surgery using bispectral index - monitoring technology
Radošić Nadežda N. (Klinički centar Srbije, Centar za anesteziju, Beograd)
Kastratović Dragana A. (Klinički centar Srbije, Služba za kliničku farmakologiju, Beograd)
Tomić Snježana D. (Klinički centar Srbije, Centar za anesteziju, Beograd)
Terzić Milica K. (Klinički centar Srbije, Centar za anesteziju, Beograd)
Marković Srđan Z. (Medicinski fakultet, Beograd)
Milaković Branko D. (Klinički centar Srbije, Centar za anesteziju, Beograd)
Introduction. Awareness is characterized by intraoperative presence of
consciousness and recollecting of the events occurring during general
anaesthesia. The study was aimed at detecting awareness during general
anaesthesia in otorhino-maxillofacial procedure. Methods. The study is a part
of a prospective, phase IV, academic study carried out at the Department for
Otorhinolaringology, Clinical Centre of Serbia, and Maxillofacial Surgery.
The study was approved by the Ethics Committee of the Clinical Centre of
Serbia and performed in accordance with European Union Clinical Trials
Directive. The evaluation included 40 patients (T-propofol and Esevofluran
group) subjected to different surgical procedures (American Society of
Anesthesiologists I-III). Depth of anaesthesia was monitored during surgical
procedures according to the hemodynamic parameters (blood pressure, pulse,
oxygen saturation, electrocardiography, capnometry). Bispectral index
monitoring was applied; however, the insight into the obtained bispectral
index values was possible only after the completion of the surgery when the
comparison with hemodynamic values was performed. Modified Brice interview
was postoperatively applied to the patients in whom awareness was suspected.
Results. Based on the hemodynamic parameter values obtained in 40
anesthetized patients, no cases of awareness were expected. After the
completion of the surgical procedures, the recorded graphic and numeric
bispectral index values obtained in the course of anaesthesia were analyzed.
Higher bispectral index values (BIS > 60) were recorded in 1 T-group patient.
Conclusion. It is possible to miss an awareness episode without using
bispectral index technology monitoring during general anaesthesia in
otorhinolaryngology and maxillofacial surgery. Bispectral index monitoring
should be the clinical standard in general anaesthesia.
Keywords: Anesthesia, General, Intraoperative Awareness, Wakefulness, Monitoring, Intraoperative + methods, Hemodynamics, Surgical Procedures, Operative