Chewing gum for 1 h does not change gastric volume in healthy fasting subjects. A prospective observational study

2023 American Society of Anesthesiologists Practice Guidelines for Preoperative Fasting: Carbohydrate-containing Clear Liquids with or without Protein, Chewing Gum, and Pediatric Fasting Duration—A Modular Update of the 2017 American Society of Anesthesiologists Practice Guidelines for Preoperative Fasting

“…The body of evidence included 10 studies (7 randomized controlled trials, 92–97,187 1 crossover study, 98 1 single-arm study, 188 and 1 case series 189 ) comparing chewing gum (sugar-free or sugared) with fasting, water, or lollipops. Chewing gum was allowed either until induction or 30 min to 1 h before surgery.…”

Qual é o efeito da goma de mascar sobre o pH e volume salivar?

“…Observa-se na prática clínica que muitos anestesiologistas acreditam que a goma de mascar deve ser proibida nesse período, devido ao temor do aumento do conteúdo estomacal em razão de maior produção de suco gástrico durante a fase cefálica mastigatória (30) . Outro motivo é o aumento do conteúdo gástrico devido ao maior fluxo salivar, elevando a quantidade de saliva deglutida, pressupondo esse um risco para a broncoaspiração.…”

Perioperative fasting and feeding in adults, obstetric, paediatric and bariatric population: Practice Guidelines from the Indian Society of Anaesthesiologists

“…A meta-analysis of 4 studies, RCTs and observational studies showed that there is no difference in the residual gastric volume or gastric emptying whether patients had chewed gum or not in the preoperative period (LOE- Very Low to Low). [ 136 137 138 139 140 ] However, in an analysis of incidents in the webAIRs Australian incident reporting system, chewing gum was found in the mouth of 5 patients during induction of anaesthesia. It may be important to ensure that patients spit out chewing gum before the administration of anaesthesia or sedation (LOE- Low).…”