Sore throat after tracheal intubation impairs postoperative recovery. We randomly allocated 172 ASA physical status 1–2 participants, scheduled for laparoscopic lower abdominal surgery, to tracheal intubation with larger tubes (n = 88) or smaller tubes (n = 84), with internal diameters 7.5-mm vs. 6.5-mm for men and 7.0-mm vs. 6.0-mm for women. Primary outcome was the rates of no, mild, moderate or severe sore throat 1 h after surgery, which were 60, 10, 17 and 1 with larger tracheal tubes and 79, 5, 0 and 0 with smaller tubes, p < 0.001. The equivalent rates 24 h after surgery were 64, 16, 8 and 0 vs. 74, 6, 3 and 1, p = 0.037. Intra-operative ventilatory variables were unaffected by tube diameter, including peak inspiratory pressure, plateau pressure and end-tidal carbon dioxide partial pressure. In summary, smaller tracheal tubes benefitted patients having laparoscopic operations.

中文翻译：

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一项针对男性和女性在腹腔镜手术中使用 7.5-mm 和 7.0-mm 气管导管与 6.5-mm 和 6.0-mm 气管导管的随机对照试验

气管插管后喉咙痛影响术后恢复。我们随机分配了 172 名 ASA 身体状况为 1-2 的参与者，计划进行腹腔镜下腹部手术，接受较大管 (n = 88) 或较小管 (n = 84) 的气管插管，内径分别为 7.5 毫米和 6.5 毫米男性为 7.0 毫米，女性为 6.0 毫米。主要结果是术后 1 小时无、轻度、中度或重度喉咙痛的发生率，较大的气管导管分别为 60、10、17 和 1，较小的气管导管分别为 79、5、0 和 0，p < 0.001。手术后 24 小时的等效率分别为 64、16、8 和 0 对 74、6、3 和 1，p = 0.037。术中通气变量不受管径的影响，包括吸气峰压、平台压和呼气末二氧化碳分压。总之，