RESPIRATORY MOVEMENTS OF THE VOCAL CORDS
RESPIRATORY MOVEMENTS OF THE VOCAL CORDS
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DOI：
10.1152/jappl.1983.54.5.1269
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发表时间：
1983-01-01
影响因子：
3.3
通讯作者：
ENGEL, LA
中科院分区：
文献类型：
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作者：
BRANCATISANO, T;COLLETT, PW;ENGEL, LA
研究人员对 12 名正常人在潮式呼吸、气喘和肺容量大幅变化时的声带运动进行了检查。用光纤支气管镜观察声门，并将声门图像与流量、体积和时间标记一起记录在录像带上。声门宽度 (dg) 和声门面积 (Ag) 的阶段性呼吸波动在所有受试者中都是可重复的，但受试者之间存在显着差异。在整个组中，dg 和 Ag 在吸气期间增加至 10.1 .+-。 5.6 毫米和 126 .+-。 8 mm2（平均值.+-. SE），而呼气期间最低值为 5.7 .+-. SE。 0.5 毫米和 70 .+-。分别为 7 平方毫米。这些极端尺寸与呼吸周期中的潮气中量点密切对应。流速为 1.2 升/秒时，肺活量 (VC) 呼气期间的声门宽度比流速为 0.5 升/秒时大近 30%，但受试者之间的 dg 和肺容量之间的关系有所不同。当通过喘气将 dg 的波动降至最低时，功能残气量 (FRC) 与吸气中期容量对应的 dg 之间没有差异。与 FRC 呼吸相比，在此肺容量下的潮式呼吸与 dg 降低 20% 相关。声门运动模式和呼吸容量周期之间存在紧密耦合。在自主呼吸动作期间，内在喉肌和呼吸肌都被募集，作为效应器官参与通气和呼吸控制。
The movements of the vocal cords were examined during tidal breathing, panting and large changes in lung volume in 12 normal [human] subjects. The glottis was observed with a fiber-optic bronchoscope, and the glottic image was recorded together with flow, volume and a time marker onto videotape. Phasic respiratory swings in glottic width (dg) and glottic area (Ag) were reproducible in all subjects but differed substantially between subjects. In the group as a whole, dg and Ag increased during inspiration to 10.1 .+-. 5.6 mm and 126 .+-. 8 mm2 (mean .+-. SE), respectively, whereas during expiration the lowest values were 5.7 .+-. 0.5 mm and 70 .+-. 7 mm2, respectively. These extreme dimensions corresponded closely to the midtidal volume points in the respiratory cycle. Glottic width during vital capacity (VC) expirations was nearly 30% greater at a flow of 1.2 l/s than at 0.5 l/s, but the relationship between dg and lung volume differed between subjects. When swings in dg were minimized by panting, there was no difference in dg between functional residual capacity (FRC) and a volume corresponding to midinspiratory capacity. Tidal breathing at this lung volume was associated with a 20% decrease in dg compared with breathing at FRC. A tight coupling was indicated between the pattern of glottic movement and the respiratory volume cycle. During voluntary respiratory maneuvers both intrinsic laryngeal and respiratory muscles are recruited, participating as effector organs in ventilatory and respiratory control.