Abstract:

Aim: The aim of this compilation is to evaluate the randomized controlled studies made about preoperative fasting.  Material and Method: Randomized controlled studies about preoperative fasting were examined. This literature examination was made in computer environment by using "Pubmed", "EBSCO", "Med-LINE" and "SCOPUS" databases. 11 randomized controlled papers were found about preoperative fasting. These 11 studies were given in an order according to chronological order including aim, sample, method, findings, discussion and conclusions. Findings: 11 studies about preoperative fasting include results about complete preoperative fasting of patients after midnight, reducing preoperative fasting periods and the effect of liquids given to patients during this process at the same volume and different content, on the situation (blood sugar level, insulin level, albumin level and staying period in hospital) after operation. In literature it was stated that long-term fasting causes many metabolic changes to occur, that it increases stress level of patients, that it damages their accordance, that it increases the stay period in the hospital and that it decreases the comfort of patients. No negative impact of reduced preoperative fasting period could be detected on gastrointestinal system functions. Conclusion: Night time fasting, which is a traditional application and its results, is now being questioned. Related to this issue, it is considered that studies on wider samples are required in order to evaluate the changing conditions.  English: Preoperative fasting

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