Fasting time and metabolic changes in elective surgeries: An integrative review
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Metabolic Processes
Nursing Assistance
Elective Surgery
Fasting Enfermería
Procesos Metabólicos
Atención de Enfermería
Cirugía Electiva
Ayuno Enfermagem
Processos Metabólicos
Assistência de Enfermagem
Cirurgia Eletiva

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Objective: To identify in the scientific production the occurrence of metabolic changes in the postoperative period of elective surgeries and their relation with preoperative fasting time. Method: An integrative review carried out from June to July 2020 in the LILACS, MEDLINE, CINAHL, COCHRANE, SCOPUS, and EMBASE databases. Articles from 2015 to 2020 were selected. For the analysis of the evidence levels, the Oxford Centre for Evidence-Based Medicine categorization was followed. Results: A total of 10 scientific articles were selected. The metabolic changes found were hyperglycemia, elevated serum levels of IL-6, cortisol, and valine, increased insulin resistance, decreased glutamic acid plasma levels, and increased IGF-1 levels with a reduction of IGFBP-3. Shortening the fasting time minimizes the patient's organic stress, with a reduction of metabolic changes, hospitalization time and morbidity. Conclusion: Preoperative fasting time longer than eight hours is related to metabolic changes in the postoperative period...
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