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Iranian Association of Medical InformaticsFrontiers in Health Informatics2676-710410120210905A Fuzzy Rule-Based Expert System to Determine Propofol Drug Dosage in Anesthesia30430410.30699/fhi.v10i1.304ENMelikaBabaeiMashhad University of Medical Sciences, Mashhad,. karim.hesam@gmail.comShararehR.Niakan KalhoriShimaSheybaniHesamKarim202105102021081720210817Introduction:Inadequate anesthetic, including under or over dosage, may lead to intraoperative awareness or prolonged recovery. Fuzzy expert systems can assist anesthesiologist to manage drug dosage in a right manner. Designing a fuzzy rule-based expert system to determine the Propofol anesthetic drug dosage was the main objective of this retrospective study.Methods:Fuzzy IF-THEN rules were defined based on evidences and experts’ linguistic rules for Propofol dose determination. Fuzzy toolbox in MATLAB software was used to design the system. Validation of system conducted with calculation of mean absolute error (MAE) and root mean squared error (RMSE). Also, difference mean between actual and predicted doses was tested with paired t-test in SPSS V.26 software. Data from 50 ENT (ears, nose, and throat) surgeries were used to validate the fuzzy system.Results:MAE for induction and maintenance doses was 0.128 and 1.95 respectively. Based on paired t-test result, there was no significant correlation between actual and predicted values (P>0.05).Conclusion:Obtained value from test and validation of system demonstrated a high performance and satisfying accuracy of the system. Therefore, this expert system can be used as a decision support system to determine initial dosage of anesthetic drugs. It can also be used for anesthesia students to learn drug administration.


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