title: Preoperative therapy restores ventilatory parameters and reduces length of stay in patients undergoing myocardial revascularization.
abstract: BACKGROUND
  The frequency of surgical procedures has increased steadily in recent decades, including the myocardial revascularization.
  
  
  OBJECTIVE
  To demonstrate the importance of physiotherapy in the preoperative period of cardiac surgery in relation to the reduction of hospital stay, changes in lung volumes and respiratory muscle strength.
  
  
  METHODS
  We conducted a prospective study with patients undergoing myocardial revascularization, the Hospital das Clínicas da Universidade Estadual Paulista (UNESP)/Botucatu - SP. We evaluated 70 patients of both genders, aged between 40 and 75 years, subdivided into two groups: group I - 35 patients of both genders, who received a written protocol guidance, breathing exercises and respiratory muscle training in the preoperative period and group II - 35 patients of both genders, who received only orientation of the ward on the day of surgery. This study was approved by the Ethics Committee of UNESP / Botucatu - SP.
  
  
  RESULTS
  Maximal inspiratory pressure in third postoperative day and fifth postoperative day and significant difference between groups, being better for the intervention group. Expiratory pressure was significant in fifth postoperative day in the intervention group compared to controls. The difference of length of hospital stay in the postoperative was found between the groups with shorter hospital stay in the group receiving preoperative therapy.
  
  
  CONCLUSIONS
  Physical therapy plays an important role in the preoperative period, so that individuals in the intervention group more readily restored the parameters evaluated before surgery, in addition, there was a decrease in the time of the postoperative hospital stay. Thus, it is thought the cost-effectiveness of a program of preoperative physiotherapy.
authors.affiliation: Hospital das Clinicas, Faculdade de Medicina de Botucatu-SP, Botucatu, SP, Brazil.
authors.forename: Moises Teixeira
authors.initials: MT
authors.lastname: Sobrinho
authors.affiliation: Hospital das Clinicas, Faculdade de Medicina de Botucatu-SP, Botucatu, SP, Brazil.
authors.forename: Gabriel Negretti
authors.initials: GN
authors.lastname: Guirado
authors.affiliation: Hospital das Clinicas, Faculdade de Medicina de Botucatu, Botucatu, SP, Brazil.
authors.forename: Marcos Augusto de Moraes
authors.initials: MA
authors.lastname: Silva
mesh_terms: D000328:Adult; D000368:Aged; D001945:Breathing Exercises / Q000379:methods*; D005260:Female; D006801:Humans; D007320:Inspiratory Capacity / Q000502:physiology; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D053580:Muscle Strength; D052580:Muscle Stretching Exercises / Q000379:methods; D009204:Myocardial Revascularization / Q000379:methods* / Q000534:rehabilitation; D011300:Preoperative Care / Q000379:methods*; D057234:Preoperative Period; D011446:Prospective Studies; D012016:Reference Values; D015203:Reproducibility of Results; D012132:Respiratory Muscles / Q000502:physiology*; D056152:Respiratory Rate / Q000502:physiology; D018709:Statistics, Nonparametric; D013990:Tidal Volume / Q000502:physiology; D013997:Time Factors; D016896:Treatment Outcome