健康成人及重度或极重度慢性阻塞性肺疾病成人连续饮水过程中的氧合情况

文献信息

中文摘要

引言： 连续饮水需要反复吞咽并在呼吸中短暂中断。言语-语言病理学家可能会注意到饮水任务期间血氧饱和度的变化，但如果没有在生理学验证的吞咽活动时采集的健康对照数据，解释起来就很困难。本研究旨在描述健康年轻成人、健康老年成人以及重度或极重度慢性阻塞性肺疾病（COPD）成人在标准化100 mL稀流质连续饮水任务中的血氧饱和度特征。
方法： 60名健康年轻成人、60名健康老年成人和11名重度或极重度COPD成人完成了三次100 mL稀流质饮水试验。同时记录颏下肌电图、呼吸感应体积描记法和脉搏血氧饱和度。在基线和生理学验证的吞咽活动时量化血氧饱和度。采用混合模型分析，检验血氧饱和度在年龄组、健康状况和测量时段之间的差异。
结果： 120名健康成人提供了标准化连续饮水过程中氧合的正常对照数据。健康年轻成人和健康老年成人在吞咽活动期间维持稳定的血氧饱和度，尽管年轻成人的血氧饱和度略高于老年成人。在较小的COPD样本中，基线和吞咽活动期间的血氧饱和度均低于健康成人，并且从基线到吞咽期显著下降。组间差异在基线时就已经很明显。各组的试验间一致性很高。
结论： 本研究在大量年轻和老年健康成人样本中，描述了生理学验证的吞咽活动时的氧合反应。这些健康成人数据为理解标准化连续饮水期间典型氧合反应提供了正常对照点。在较小的COPD样本中，主要发现是基线氧合较低，并伴有吞咽活动期间轻度的额外下降。这些初步发现可能有助于言语-语言病理学家在饮水任务期间谨慎解释血氧饱和度变化，并结合基线呼吸状态进行判断。

英文摘要

INTRODUCTION: Sequential drinking requires repeated swallowing with brief interruptions in breathing. Speech-language pathologists may notice oxygen saturation changes during drinking tasks, but interpretation is difficult without healthy comparison data collected at the time of physiologically verified swallowing activity. This study characterized oxygen saturation during a standardized 100-mL thin-liquid sequential drinking task in healthy younger adults, healthy older adults, and adults with severe or very severe chronic obstructive pulmonary disease (COPD).
METHODS: Sixty healthy younger adults, 60 healthy older adults, and 11 adults with severe or very severe COPD completed three 100-mL thin-liquid water trials. Submental electromyography, respiratory inductive plethysmography, and pulse oximetry were recorded concurrently. Oxygen saturation was quantified at baseline and at the time of physiologically verified swallowing activity. Mixed-model analyses examined oxygen saturation differences by age group, health status, and measurement period.
RESULTS: The 120 healthy adults provided normative comparison data for oxygenation during standardized sequential drinking. Healthy younger and older adults maintained stable oxygen saturation during swallowing activity, although younger adults showed slightly higher oxygen saturation than older adults. In the small COPD sample, oxygen saturation was lower than in healthy adults at baseline and during swallowing activity, and it declined significantly from baseline to the swallowing period. Substantial between-group separation was already present at baseline. Trial-to-trial consistency was high across groups.
CONCLUSION: This study characterized oxygenation responses at the time of physiologically verified swallowing activity in a large sample of younger and older healthy adults. These healthy adult data provide a normative comparison point for understanding typical oxygenation responses during standardized sequential drinking. In the small COPD sample, the predominant finding was lower baseline oxygenation, accompanied by a modest additional decline during swallowing activity. These preliminary findings may help speech-language pathologists interpret oxygen saturation changes during drinking tasks cautiously and in relation to baseline respiratory status.