Department of Physical Therapy and Rehabilitation Science, University of Maryland School of Medicine, Baltimore, MD, United States.
Department of Physical Therapy and Rehabilitation Science, University of Maryland School of Medicine, Baltimore, MD, United States.
Respir Physiol Neurobiol. 2022 Nov;305:103950. doi: 10.1016/j.resp.2022.103950. Epub 2022 Jul 26.
Diaphragm ultrasound (DUS) is a noninvasive method of evaluating the diaphragm's structure and function. This study explored the relationships between DUS, spirometry, and respiratory mouth pressures in 10 healthy children (median age: 11 [range: 7-14 years]; 5 females, 5 males). Thickening fraction correlated with maximal inspiratory pressure (MIP) (Spearman's rho [r] = 0.64, p = 0.05). During quiet breaths, excursion time correlated with MIP (r = 0.78, p = 0.01) while velocity correlated with maximal expiratory pressure (r = -0.82, p = 0.01). During deep breaths, MIP correlated with excursion (r = 0.64, p = 0.05) and time (r = 0.87, p = 0.01). Excursion time during deep breaths also correlated with forced vital capacity (r = 0.65, p = 0.04). Our findings suggest that DUS parameters are closely related to spirometry and respiratory mouth pressures in healthy children and further support the use of DUS as a noninvasive method of respiratory assessment.
膈肌超声（DUS）是一种评估膈肌结构和功能的非侵入性方法。本研究探讨了 10 名健康儿童（中位数年龄：11 岁[范围：7-14 岁]；女性 5 名，男性 5 名）的 DUS、肺活量测定法和呼吸口腔压力之间的关系。增厚分数与最大吸气压力（MIP）相关（Spearman 相关系数[r] = 0.64，p = 0.05）。在平静呼吸时，移行时间与 MIP 相关（r = 0.78，p = 0.01），而速度与最大呼气压力相关（r = -0.82，p = 0.01）。在深呼吸时，MIP 与移行相关（r = 0.64，p = 0.05）和时间相关（r = 0.87，p = 0.01）。深呼吸时的移行时间也与用力肺活量相关（r = 0.65，p = 0.04）。我们的发现表明，DUS 参数与健康儿童的肺活量测定法和呼吸口腔压力密切相关，并进一步支持 DUS 作为一种非侵入性呼吸评估方法的使用。
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