title: [Evaluation of perioperative management of seven patients with pulmonary artery sling in recent seven years].
abstract: BACKGROUND
  Pulmonary artery sling (PA sling) is a rare vascular anomaly in which the left pulmonary artery arises from the right pulmonary artery. It can cause compression of trachea. Due to its rarity, risk factors influencing postsurgical outcome are still unclear. The purpose of our study is to investigate past cases of PA sling to clarify risk factors.
  
  
  METHODS
  We investigated 7 patients who had undergone one-stage operation of PA sling from 2001 to 2007. Hospital stay, ICU stay and length of artificial ventilation are set as primary outcome. Patients' weight, range of tracheal stenosis, operation time, cardiopulmonary bypass time, presence of tracheal stenosis, bronchial anomaly, preoperative intubation, intracardiac anomaly and postoperative re-intubation were compared.
  
  
  RESULTS
  In-hospital mortality was none. Two cases in patients with tracheomalacia were re-intubated. Concomitant tracheoplasty was performed in six patients. Two patients with intracardiac anomaly underwent cardiac operation. No factor except tracheomalacia affected primary outcome.
  
  
  CONCLUSIONS
  We need more cases to clarify factors affecting outcome of patients with PA sling. However, existence of tracheomalacia is found to be a risk factor of longer artificial ventilation.
authors.affiliation: Department of Anesthesiology, Kawasaki Municipal Kawasaki Hospital, Kawasaki 210-0013.
authors.forename: Ryota
authors.initials: R
authors.lastname: Sakaguchi
authors.forename: Wataru
authors.initials: W
authors.lastname: Takayama
authors.forename: Hiroka
authors.initials: H
authors.lastname: Yoshikawa
authors.forename: Tomomi
authors.initials: T
authors.lastname: Ueda
authors.forename: Akiko
authors.initials: A
authors.lastname: Nihara
authors.forename: Shinichi
authors.initials: S
authors.lastname: Yamamoto
authors.forename: Junichi
authors.initials: J
authors.lastname: Masuda
mesh_terms: D000758:Anesthesia; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007902:Length of Stay; D019990:Perioperative Care; D011651:Pulmonary Artery / Q000002:abnormalities* / Q000601:surgery*; D012121:Respiration, Artificial; D012307:Risk Factors; D013308:Streptonigrin; D014135:Tracheal Stenosis / Q000209:etiology; D055090:Tracheomalacia / Q000209:etiology; D016896:Treatment Outcome
chemical_list: C079133:retrostatin; D013308:Streptonigrin