title: Benefits of maltodextrin intake 2 hours before cholecystectomy by laparotomy in respiratory function and functional capacity: a prospective randomized clinical trial.
abstract: OBJECTIVE
  To evaluate the change in respiratory function and functional capacity according to the type of preoperative fasting.
  
  
  METHODS
  Randomized prospective clinical trial, with 92 female patients undergoing cholecystectomy by laparotomy with conventional or 2 hours shortened fasting. The variables measured were the peak expiratory flow, forced expiratory volume in the first second, forced vital capacity, dominant handgrip strength, and non-dominant handgrip strength. Evaluations were performed 2 hours before induction of anesthesia and 24 hours after the operation.
  
  
  RESULTS
  The two groups were similar in preoperative evaluations regarding demographic and clinical characteristics, as well as for all variables. However, postoperatively the group with shortened fasting had higher values than the group with conventional fasting for lung function tests peak expiratory flow (128.7±62.5 versus 115.7±59.9; p=0.040), forced expiratory volume in the first second (1.5±0.6 versus 1.2±0.5; p=0.040), forced vital capacity (2.3±1.1 versus 1.8±0.9; p=0.021), and for muscle function tests dominant handgrip strength (24.9±6.8 versus 18.4±7.7; p=0.001) and non-dominant handgrip strength (22.9±6.3 versus 17.0±7.8; p=0.0002). In the intragroup evaluation, there was a decrease in preoperative compared with postoperative values, except for dominant handgrip strength (25.2±6.7 versus 24.9±6.8; p=0.692), in the shortened fasting group.
  
  
  CONCLUSIONS
  Abbreviation of preoperative fasting time with ingestion of maltodextrin solution is beneficial to pulmonary function and preserves dominant handgrip strength.
authors.affiliation: Universidade do Mato Grosso, Cuiabá, MT, Brazil.
authors.forename: Fabiana Vieira Breijão
authors.initials: FV
authors.lastname: Zani
authors.affiliation: Universidade do Mato Grosso, Cuiabá, MT, Brazil.
authors.forename: José Eduardo
authors.initials: JE
authors.lastname: Aguilar-Nascimento
authors.affiliation: Universidade do Mato Grosso, Cuiabá, MT, Brazil.
authors.forename: Diana Borges Dock
authors.initials: DB
authors.lastname: Nascimento
authors.affiliation: Universidade do Mato Grosso, Cuiabá, MT, Brazil.
authors.forename: Ageo Mário Cândido da
authors.initials: AM
authors.lastname: Silva
authors.affiliation: Universidade do Mato Grosso, Cuiabá, MT, Brazil.
authors.forename: Fernanda Stephan
authors.initials: FS
authors.lastname: Caporossi
authors.affiliation: Universidade do Mato Grosso, Cuiabá, MT, Brazil.
authors.forename: Cervantes
authors.initials: C
authors.lastname: Caporossi
mesh_terms: D000328:Adult; D002763:Cholecystectomy / Q000009:adverse effects; D041761:Cholecystolithiasis / Q000601:surgery; D005215:Fasting / Q000009:adverse effects / Q000378:metabolism*; D005260:Female; D005541:Forced Expiratory Volume / Q000187:drug effects; D005652:Functional Residual Capacity / Q000187:drug effects*; D018737:Hand Strength / Q000502:physiology; D006801:Humans; D008875:Middle Aged; D053580:Muscle Strength / Q000187:drug effects*; D011134:Polysaccharides / Q000378:metabolism / Q000494:pharmacology*; D011184:Postoperative Period; D011300:Preoperative Care; D011446:Prospective Studies; D013147:Spirometry; D013997:Time Factors; D014797:Vital Capacity / Q000187:drug effects*
chemical_list: D011134:Polysaccharides; C008315:maltodextrin