Foggia D A, Gray S D, Kelly K M
Department of Otolaryngology-Head and Neck Surgery, University of Iowa College of Medicine, Iowa City.
Otolaryngol Head Neck Surg. 1991 Dec;105(6):826-31. doi: 10.1177/019459989110500609.
Five-week-old New Zealand white rabbits were divided into three groups: control, anterior-posterior cricoid split with stent, and cricoid quartersection (anterior-posterior-lateral cricoid split) with stent. The stents were removed 2 weeks after placement. The rabbits were allowed to grow for six months, at which time they were killed and the larynges were studied. Average, minimal, and maximal subglottal cross-sectional areas were calculated for each animal and adjusted for weight. The cricoid quartersection group had significantly greater average, minimal, and maximal subglottal cross-sectional areas compared to controls and significantly greater minimal and maximal cross-sectional areas compared to the anterior-posterior cricoid split group. The anterior-posterior cricoid split group and the control group did not significantly differ with respect to any of the three parameters. The results indicate that anterior-posterior cricoid split and cricoid quartersection do not adversely affect subglottic growth. Cricoid quartersectioning was superior to the anterior-posterior cricoid split in its ability to expand subglottic airway dimension.
将5周龄的新西兰白兔分为三组：对照组、环状软骨前后劈开并置入支架组、环状软骨四部分切开（环状软骨前后外侧劈开）并置入支架组。支架置入2周后取出。让兔子生长6个月，此时将它们处死并对喉部进行研究。计算每只动物的声门下平均、最小和最大横截面积，并根据体重进行调整。与对照组相比，环状软骨四部分切开组的声门下平均、最小和最大横截面积显著更大，与环状软骨前后劈开组相比，其最小和最大横截面积也显著更大。环状软骨前后劈开组和对照组在这三个参数中的任何一个方面均无显著差异。结果表明，环状软骨前后劈开和环状软骨四部分切开对声门下生长没有不利影响。环状软骨四部分切开在扩大声门下气道尺寸的能力方面优于环状软骨前后劈开。
