title: Changes in uncuffed endotracheal tube leak during laparoscopic inguinal herniorrhaphy in children.
abstract: The present study was conducted to investigate changes in uncuffed endotracheal tube (ETT) leak during laparoscopic surgery. The study included 31 patients aged between 1 and 6 years scheduled for elective laparoscopic inguinal herniorrhaphy. Inspiratory and expiratory tidal volumes (TVi and TVe) were measured during mechanical ventilation, and ETT leak was calculated using the formula-ETT leak = (TVi - TVe)/TVi × 100 (%), assessed at the following time-points-5 min after the start of mechanical ventilation (T1, baseline), just before the start of surgery (T2), 5 min after the induction of pneumoperitoneum with 15° Trendelenburg tilt (T3), and at the end of surgery (T4). Additionally, leak pressure was assessed after successful tracheal intubation (T0, baseline) at T2, T3 and T4. Uncuffed ETT leak significantly decreased at T3 compared with T1 (baseline). Leak pressure significantly increased at T3 and T4 compared with T0 (baseline). Further studies are needed in order to determine whether the results are universal and associated with clinically significant outcomes.
authors.affiliation: Department of Anesthesiology and Critical Care Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, Saga, 849-8501, Japan. anoguchi0412@yahoo.co.jp.
authors.forename: Akiko
authors.initials: A
authors.lastname: Noguchi
authors.affiliation: Department of Anesthesiology, Saga-Ken Medical Centre Koseikan, Saga, Japan.
authors.forename: Kumiko
authors.initials: K
authors.lastname: Kuga
authors.affiliation: Department of Anesthesiology and Critical Care Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, Saga, 849-8501, Japan.
authors.forename: Naoki
authors.initials: N
authors.lastname: Tashiro
authors.affiliation: Department of Anesthesiology, Saga-Ken Medical Centre Koseikan, Saga, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Shimakawa
authors.affiliation: Department of Pediatric Surgery, Kokura Medical Center, Fukuoka, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Shono
authors.affiliation: Department of Anesthesiology and Critical Care Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, Saga, 849-8501, Japan.
authors.forename: Naomi
authors.initials: N
authors.lastname: Hirakawa
authors.affiliation: Department of Anesthesiology and Critical Care Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, Saga, 849-8501, Japan.
authors.forename: Yoshiro
authors.initials: Y
authors.lastname: Sakaguchi
mesh_terms: D002648:Child; D002675:Child, Preschool; D005260:Female; D059685:Herniorrhaphy / Q000379:methods*; D006801:Humans; D007442:Intubation, Intratracheal / Q000379:methods*; D010535:Laparoscopy / Q000379:methods*; D008297:Male; D011027:Pneumoperitoneum; D011312:Pressure; D011446:Prospective Studies; D012121:Respiration, Artificial / Q000379:methods*
keywords: Children; Leak pressure; Pneumoperitoneum; Trendelenburg position; Uncuffed endotracheal tube leak