Leeper H A, Graves D K
J Commun Disord. 1984 Jun;17(3):153-63. doi: 10.1016/0021-9924(84)90008-x.
Fifteen young adult women performed a noninvasive clinical technique for measurement of laryngeal airway resistance (Rlaw) during syllable (consonant plus vowel) production. The data were recorded from oscillographic records of translaryngeal air pressure (Ptr - Pph) and translaryngeal airflow (Vt1) over 2 days, during two time periods on each day. The overall mean Rlaw for the experimental sessions was 38.3 cmH2O/LPS (SD = 9.24). No significant differences were found within or between days or time of day for the subjects. The obtained values were similar to mean values obtained for men in a previous study (Smitheran and Hixon, 1981). Single subject phonation data were also gathered during a controlled intensity condition. The Rlaw range and standard deviation figures decreased significantly from the uncontrolled condition during syllable productions to the midrange intensity (75 dB SPL). This finding suggests that control of intensity is an important variable to consider during clinical sampling. The measurement procedure shows promise clinically as an index of actual laryngeal resistance under selected control conditions and in relation to simultaneous comparison of patient strategies used to regulate translaryngeal pressure and airflow.
15名年轻成年女性在发出音节（辅音加元音）时进行了一项用于测量喉气道阻力（Rlaw）的非侵入性临床技术操作。数据是在2天内，每天的两个时间段，从经喉气压（Ptr - Pph）和经喉气流（Vt1）的示波器记录中获取的。实验阶段的Rlaw总体平均值为38.3 cmH2O/LPS（标准差 = 9.24）。在各天之间以及一天中的不同时间，受试者的Rlaw均未发现显著差异。所获得的值与先前一项针对男性的研究（史密斯兰和希克森，1981年）中得到的平均值相似。在强度受控的条件下，还收集了单受试者发声数据。从音节发出时的非受控状态到中等强度（75 dB SPL），Rlaw的范围和标准差数值显著降低。这一发现表明，在临床采样过程中，强度控制是一个需要考虑的重要变量。该测量程序在临床上有望作为在选定控制条件下实际喉阻力的指标，并用于同时比较患者调节经喉压力和气流所采用的策略。
