Khalil S N, Mankarious R, Campos C, Chuang A Z, Lemak N A
Department of Anesthesiology, University of Texas Medical School at Houston, USA.
Paediatr Anaesth. 1998;8(5):393-6.
To prevent postoperative croup in children, many anaesthesiologists use a tracheal tube that allows a leak when tested with 20 to 25 cm of water pressure. We studied the correlation of postoperative croup with leak, duration of anaesthesia, and a recent cold in 159 healthy outpatient children who had strabismus correction by the same surgeon and the same anaesthesiologist. We found no correlation between the presence or absence of a leak and the incidence or severity of postoperative croup. There was a strong trend toward significance when postoperative croup and duration of anaesthesia were compared (P = 0.056) and a significant, positive correlation between severe croup (requiring racemic epinephrine) and duration of anaesthesia (P = 0.005). Patients having a recent cold did not have an increased incidence of postoperative croup. A leak around the tracheal tube at 20 to 25 cm of water pressure may not be required for a healthy child who undergoes surgery lasting less than 2 h if the child has no history of croup.
为预防儿童术后喉炎，许多麻醉医生使用一种气管导管，在施加20至25厘米水柱压力测试时会出现漏气。我们研究了159例接受同一位外科医生和同一位麻醉医生进行斜视矫正手术的健康门诊儿童术后喉炎与漏气、麻醉持续时间以及近期感冒之间的相关性。我们发现漏气与否与术后喉炎的发生率或严重程度之间没有相关性。比较术后喉炎与麻醉持续时间时，有很强的显著趋势（P = 0.056），严重喉炎（需要使用消旋肾上腺素）与麻醉持续时间之间存在显著的正相关（P = 0.005）。近期感冒的患者术后喉炎发生率并未增加。对于没有喉炎病史且手术持续时间少于2小时的健康儿童，可能不需要在20至25厘米水柱压力下气管导管周围出现漏气。
