[Fuzzy logic and postoperative pain].

Authors :: Carregal A
Figueira A
Núñez M
Carollo A
Lorenzo A
Rey M
González G
Source :: Revista espanola de anestesiologia y reanimacion [Rev Esp Anestesiol Reanim] 1997 Jun-Jul; Vol. 44 (6), pp. 215-7.
Publication Year :: 1997
Abstract: Objective: To apply a fuzzy logic expert control system for the treatment of postoperative pain in a clinical setting.<br />Material and Methods: A system was designed consisting of a perfusion pump guided by a fuzzy logic computer interface to regulate the perfusion of alfentanil in accordance with the patient's pain response. The system was also equipped with a safety device that halted perfusion in case of desaturation, bradypnea or heart rate or blood pressure variations greater than 25%. The system was used in the first 90 minutes after surgery in a patient who underwent bilateral saphenectomy.<br />Results: All system functions worked properly, maintaining the target analgesic values (visual analog scale < or = 2) 77% of the time.<br />Conclusion: It is possible to use fuzzy logic to obtain adequate treatment of postoperative pain.