Department of Communication Sciences and Disorders, Faculty of Social Welfare & Health Sciences, University of Haifa, Haifa, Israel.
Department of Communication Sciences and Disorders, Faculty of Social Welfare & Health Sciences, University of Haifa, Haifa, Israel.
J Voice. 2021 Jan;35(1):40-51. doi: 10.1016/j.jvoice.2019.07.017. Epub 2019 Aug 12.
The primary purpose of the current study was to determine the usefulness of Buteyko breathing technique (BBT) in reducing dyspnea in patients with one form of Paradoxical Vocal Fold Motion (PVFM), exertion-induced PVFM (EI-PVFM), concomitant with hyperventilation. The secondary purpose was to determine whether BBT had an effect on physiological markers of hyperventilation, as speculated by BBT theory: respiratory tidal minute volume (RTMV), end-tidal carbon dioxide (ETCO), and resting heart rate (HR).
Using a within-subjects, repeated measures group design, 12 participants with EI-PVFM and hyperventilation underwent 12 weeks of BBT, following an initial no-treatment control condition. Outcome measures of PVFM-dyspnea frequency and severity-and of hyperventilation-HR, RTMV, and ETCO-were acquired pre- and post-treatment.
Results showed post-treatment decreases in dyspnea severity, HR, and RTMV, as well as increases in ETCO. Decreases in dyspnea and RTMV measures remained after correction for alpha inflation.
Findings suggest BBT may be useful for some individuals with EI-PVFM and hyperventilation. The high prevalence of hyperventilation in EI-PVFM found in the current study warrants further investigation.
本研究的主要目的是确定布氏呼吸法（BBT）在减少一种反常性声带运动（PVFM），即运动诱发的 PVFM（EI-PVFM）患者呼吸困难中的有效性，同时该患者伴有过度通气。次要目的是确定 BBT 是否对过度通气的生理标志物产生影响，这是 BBT 理论所推测的：呼吸潮气量（RTMV）、呼气末二氧化碳（ETCO）和静息心率（HR）。
采用自身对照、重复测量的组设计，12 名 EI-PVFM 合并过度通气患者在无治疗对照期后进行 12 周的 BBT 治疗。在治疗前后分别采集 PVFM 呼吸困难的频率和严重程度以及过度通气的 HR、RTMV 和 ETCO 的指标。
结果显示，治疗后呼吸困难严重程度、HR 和 RTMV 降低，ETCO 增加。在对 alpha 膨胀进行校正后，呼吸困难和 RTMV 指标的降低仍然存在。
研究结果表明，BBT 可能对一些 EI-PVFM 合并过度通气的患者有用。本研究中发现 EI-PVFM 中过度通气的高患病率需要进一步研究。
