title: Laparoscopy--an investigation during spontaneous ventilation.
mesh_terms: D000005:Abdomen; D002245:Carbon Dioxide / Q000097:blood; D004562:Electrocardiography; D004724:Endoscopy; D006801:Humans; D010535:Laparoscopy; D010100:Oxygen / Q000097:blood; D012119:Respiration
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen