Reducing the negative vocal effects of superficial laryngeal dehydration with humidification.
Reducing the negative vocal effects of superficial laryngeal dehydration with humidification.
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DOI：
10.1177/0003489414527230
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发表时间：
2014-07
期刊：
影响因子：
--
通讯作者：
Sivasankar MP
中科院分区：
文献类型：
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作者：
Levendoski EE;Sundarrajan A;Sivasankar MP
环境加湿是一种简单、经济实惠的方法，据信可以减少喉部浅表干燥。这项研究试图通过调查湿化治疗是否会减少喉表浅脱水对发声阈值压力(PTP)的负面影响来验证这一观点。发声阈值压力数据分析由于缺乏调查者的盲目性，可能容易产生偏差。因此，这项研究调查了非盲目和盲目调查人员之间PTP分析的可靠性程度。健康的男性和女性成年人根据他们对问卷的回答被分配到声音疲劳组(n=20)或对照组(n=20)。在低湿度下口腔呼吸2小时(脱水挑战)，在环境湿度中休息5分钟后，以及在高湿度下呼吸2小时(湿化)后评估PTP。在喉部脱水挑战后，PTP显著增加。湿化后，PTP恢复到基线水平。在两组受试者中都观察到了这些影响。非盲目和盲目调查者之间的PTP测量高度相关。湿化可能是减少喉部浅表脱水对发声的不良影响的一种有效方法。这些数据为未来旨在预防和治疗与慢性表面喉部干燥相关的负面嗓音改变的研究奠定了基础。
Environmental humidification is a simple, cost-effective method believed to reduce superficial laryngeal drying. This study sought to validate this belief by investigating whether humidification treatment would reduce the negative effects of superficial laryngeal dehydration on phonation threshold pressure (PTP). Phonation threshold pressure data analysis may be vulnerable to bias because of lack of investigator blinding. Consequently, this study investigated the extent of PTP analysis reliability between unblinded and blinded investigators. Healthy male and female adults were assigned to a vocal fatigue (n = 20) or control group (n = 20) based on their responses to a questionnaire. PTP was assessed after 2 hours of mouth breathing in low humidity (dehydration challenge), following a 5-minute break in ambient humidity, and after 2 hours of mouth breathing in high humidity (humidification). PTP significantly increased following the laryngeal dehydration challenge. After humidification, PTP returned toward baseline. These effects were observed in both subject groups. PTP measurements were highly correlated between the unblinded and blinded investigator. Humidification may be an effective approach to decrease the detrimental voice effects of superficial laryngeal dehydration. These data lay the foundation for future investigations aimed at preventing and treating the negative voice changes associated with chronic, surface laryngeal drying.