A cross-sectional study on monitoring depth of anesthesia using brain function index among elective laparotomy patients
Mohamad Aryafar, Rama Bozorgmehr, Reza Alizadeh, Farshid Gholami
Abstract
ABSTRACT Background: Consciousness during surgical procedure is associated with adverse psychological effects and postoperative complications. The aim of this study is to evaluate the depth of anesthesia using brain function index (BFI) among patients undergoing elective laparotomy. Materials and methods: In this cross-sectional study, 256 patients referred to (XXX) for elective laparotomy were included. BFI values using published studies were used to measure the depth of anesthesia in response to propofol, atracurium and propofol induction: deeply anesthetized (BFI<40), general anesthesia (40 < BFI<60), lightly anesthetized (60 < BFI<80) and (BFI<80) awake. These were evaluated at the time of surgical incision and 15, 30 and 60 min after surgery. Statistical analysis was performed using SPSS v22. Results: The average dose of propofol administered/propofol infusion was 111.67 ± 78.87 and 104.88 ± 76.20, respectively, atracurium 67.04 ± 40.06 and fentanyl was 33.61 ± 9.137. Deep anesthesia and light anesthesia were significantly different at various time intervals, p < 0.05, respectively. However, consciousness was not significantly different at different time interval in exception to the fentanyl drug administration. Conclusion: The outcomes of our study show that brain function index might be helpful to determine the level of anesthesia among patients undergoing elective laparotomy. However, further comparative studies, including other parameters are required. Highlights: