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A fuzzy expert system design to monitor patient's condition during heart surgery

The aim of this study is to design a Fuzzy Expert System to trace vital functions of the patient for directing the courses of the surgery during the Coronary Bypass Surgery (CBS). The designed fuzzy expert system presents and monitors four of the vital functions (Blood pressure, Hemoglobin, Pulse and Beta-blocker) of the patient and also interprets them to indicate current situation of the patient during the operation. The output of the system is indicator for the patient during the surgery in visual and audial forms that have (1) very thick, (2) thick, (3) normal, (4) thin and (5) very thin forms of the signal. The data (Course of the patient during the surgery) obtained from designed fuzzy expert system are compared with the data in the literature.It has been seen that better results are observed with designed system. The system can be viewed as an alternative for existing methods to monitor for directing the course of the coronary surgery.