Lesser T, Williams G
Department of Otolaryngology, Cardiff, Wales.
Clin Otolaryngol Allied Sci. 1988 Feb;13(1):37-42. doi: 10.1111/j.1365-2273.1988.tb00279.x.
This study investigates postoperative hoarseness by comparing the patient's subjective assessment of change in voice following intubation with objective measures made using the laryngograph. Twenty-five patients admitted for routine surgery were assessed pre- and postoperatively. An Fx histogram was recorded on the laryngograph. A linear analogue self-assessment scale was used to quantify hoarseness subjectively. The objective measure of hoarseness (spread or standard deviation of Fx histogram) correlated well with the patients' subjective assessment of hoarseness. Six patients showed a bi- or trimodal histogram following intubation. This is known to represent asymmetric muscular activity. It is concluded that change in voice following intubation correlates well with the measures of vocal fold trauma. These measures can be recorded as the change in spread, standard deviation of the Fx histogram. The transient postoperative hoarseness following intubation is due to laryngeal damage. This damage has 2 mechanisms; in most cases it is due to direct mucosal trauma but in other cases a deeper muscular damage occurs.
本研究通过比较患者对插管后声音变化的主观评估与使用喉描记仪进行的客观测量，来调查术后声音嘶哑情况。对25例接受常规手术的患者进行了术前和术后评估。在喉描记仪上记录Fx直方图。使用线性模拟自评量表对声音嘶哑进行主观量化。声音嘶哑的客观测量值（Fx直方图的离散度或标准差）与患者对声音嘶哑的主观评估具有良好的相关性。6例患者在插管后出现双峰或三峰直方图。已知这代表不对称肌肉活动。得出结论，插管后声音变化与声带创伤的测量结果具有良好的相关性。这些测量结果可记录为Fx直方图离散度、标准差的变化。插管后短暂的术后声音嘶哑是由于喉部损伤。这种损伤有两种机制；在大多数情况下，是由于直接的黏膜创伤，但在其他情况下，会发生更深层的肌肉损伤。
