title: The effects of isothermic and hypothermic carbon dioxide pneumoperitoneum on respiratory function test results.
abstract: OBJECTIVE
  This study investigated the effects of isothermic and hypothermic carbon dioxide, used for pneumoperitoneum during laparoscopic cholecystectomy, on respiratory function test results.
  
  
  METHODS
  Thirty patients who underwent elective laparoscopic cholecystectomy were enrolled in this prospective randomized study. The patients were divided into two groups. Carbon dioxide at 37 degrees C (isothermic) was used in the isothermic group, and carbon dioxide at 21 degrees C (hypothermic) was used in the hypothermic group. Respiratory function tests were performed in the preoperative period and at 12 h after the operation.
  
  
  RESULTS
  Mean forced vital capacity (FVC), forced expiratory volume (FEV1), maximum peak expiratory flow (PEF), and the FEV1/FVC ratio were significantly higher in the isothermic group than in the hypothermic group (P < 0.05).
  
  
  CONCLUSIONS
  Using isothermic carbon dioxide for pneumoperitoneum has fewer negative effects than hypothermic carbon dioxide on respiratory function tests results. Isothermic carbon dioxide may be preferable for patients with respiratory problems.
authors.affiliation: Department of Surgery, Faculty of Medicine, Harran University, 63300 Sanliurfa, Turkey.
authors.forename: Ali
authors.initials: A
authors.lastname: Uzunkoy
authors.forename: Abdullah
authors.initials: A
authors.lastname: Ozgonul
authors.forename: Erkan
authors.initials: E
authors.lastname: Ceylan
authors.forename: Mehmet
authors.initials: M
authors.lastname: Gencer
mesh_terms: D000328:Adult; D002245:Carbon Dioxide / Q000008:administration & dosage; D017081:Cholecystectomy, Laparoscopic / Q000009:adverse effects / Q000379:methods*; D005260:Female; D005740:Gases / Q000008:administration & dosage; D006801:Humans; D007035:Hypothermia / Q000150:complications*; D008171:Lung Diseases / Q000175:diagnosis / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D011028:Pneumoperitoneum, Artificial / Q000009:adverse effects*; D011446:Prospective Studies; D012129:Respiratory Function Tests; D013696:Temperature
chemical_list: D005740:Gases; D002245:Carbon Dioxide