title: [Assessment of respiratory muscle strength, peak expiratory flow and pain after open cholecystectomy].
abstract: OBJECTIVE
  to investigate the behavior of maximal inspiratory and expiratory pressure (MIP and MEP), peak expiratory flow (PEF) and pain after open cholecystectomy.
  
  
  METHODS
  were investigated 31 volunteers over 18 years submitted to open cholecystectomy between january and december 2007 at Holy House of Charity in the city of Diamantina-MG. The MIP MEP PEF and pain variables were measured at times pre-operative, 24 and 48 hours post-operative using manovacuometer, peak flow meter Assess and visual numeric scale of pain respectively. The statistical analysis was performed using Wilcoxon and Spearman tests considering significant differences for p<0,05.
  
  
  RESULTS
  There was significant reduction of the MIP MEP and PEF values at 24 and 48 hours post-operative compared to the pre-operative values. The levels of pain were significantly higher at all post-operative times compared to the pre-operative time. The MIP, MEP and PEF measures not showed correlation with the levels of post-operative pain. Nevertheless, the PEF after surgery showed significant correlation with the MEP values.
  
  
  CONCLUSIONS
  the open cholecystectomy causes significant impairment of the respiratory muscle strength and the peak expiratory flow at all post-operative times evaluated, with more pronounced reductions at 24 hours post-operative. The MIP MEP and PEF measures presented a different behavior compared to pain evaluation at all times investigated.
authors.affiliation: Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, MG, Brasil.
authors.forename: Aline Silva de
authors.initials: AS
authors.lastname: Miranda
authors.forename: Rômulo Dias
authors.initials: RD
authors.lastname: Novaes
authors.forename: Alex Erickson
authors.initials: AE
authors.lastname: Ferreira
authors.forename: Miguel Pontes Correia
authors.initials: MP
authors.lastname: Neves
authors.forename: Clynton Lourenço
authors.initials: CL
authors.lastname: Corrêa
authors.forename: Vanessa Amaral
authors.initials: VA
authors.lastname: Mendonça
mesh_terms: D000293:Adolescent; D000328:Adult; D015992:Body Mass Index; D001945:Breathing Exercises; D002763:Cholecystectomy / Q000009:adverse effects*; D045853:Exhalation / Q000502:physiology*; D005260:Female; D006801:Humans; D008448:Maximal Expiratory Flow Rate / Q000502:physiology*; D008875:Middle Aged; D053580:Muscle Strength; D010149:Postoperative Pain / Q000503:physiopathology*; D011446:Prospective Studies; D012129:Respiratory Function Tests; D012132:Respiratory Muscles / Q000503:physiopathology*; D018709:Statistics, Nonparametric; D055815:Young Adult