Correlation between triple low and ASA score – does it exist?
Anaesthesia,general
P. Dyl1, A. Misztal1, A. Andruszak - Kot1, T. Napiorkowski1, M. Borun1, M. Symonides1
1 The Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology - Warsaw (Poland)
Background and Goal of Study:Triple low, commonly described as intraoperative occurence of low mean arterial pressure, low mean alveolar concentration of an anesthethic, and low bispectral index is a phenomenon which is presently widely discussed. Our aim was to assess if and how the preoperative ASA score influences the likelihood of triple low occurence. We chose a patient case series homogenous as to the method of anaesthesia maintenance (sevoflurane monitored by BIS value). All desflurane cases were excluded.
Materials and Methods:Between Jan.2016 and Sept.2017 5218 patients underwent general anesthesia with sevoflurane. In order to assure that induction was standardised all emergency cases were excluded from the analysis. Typical induction consisted of (on average) propofol 2 mg/kg, fentanyl 2.8 ug/kg; rocuronium 0.6 mg/kg. Maintenace consisted of sevoflurane adjusted by BIS, rocuronium (infusion 0.6 mg/kg/h) and fentanyl in adjusted doses. 245/5218 patients presented "triple low" i.e.: MAC<0.8, MAP<75 mmHg, BIS<45. Group I (no triple low) consisted of 4973 pts; group II – 245 pts. Statistically the groups did not vary (Fisher's test). The ASA scores in both patient groups were compared.
Results and Discussion:We found that the distribution of ASA scores did not vary between the groups.
Conclusion(s):We have found no corelation between the incidence of triple low and ASA score.
References (optional):"Concurrence of Intraoperative Hypotension, Low Minimum AlveolarConcentration, and Low Bispectral Index Is Associated with Postoperative Death" Willingham MD et al, 2015

05 / Correlation between triple low and ASA score – does it exist?