Detection of upper airway obstruction by diaphragm ultrasound combined with inspired volume measurement

IF 1.3 4区医学 Q4 PHYSIOLOGY

Clinical Physiology and Functional Imaging Pub Date : 2025-10-02 DOI:10.1111/cpf.70033

Alain Boussuges, Manon Leveque, Ralph Haddad, Camille Martinez, Eric Nussbaum, Fabienne Brégeon

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Abstract

Background

Upper airway stenosis may remain undiagnosed for extended periods. Ultrasound allows for the evaluation of the impact of respiratory diseases on diaphragmatic function.

Methods

Three patients presenting with symptoms suggestive of upper airway obstruction were assessed using diaphragmatic ultrasound. Simultaneously, inspired volumes were measured on a breath-by-breath basis. Inspiratory flow was calculated during both quiet and deep breathing by dividing inspired volume by excursion duration.

Results

Diaphragmatic function, studied by the measurement of excursion and thickening fraction, was preserved in all cases. However, the temporal profile of diaphragmatic excursion differed from that observed in healthy individuals. A reduction in inspiratory flow was observed and appeared to be related to the severity of obstruction, as determined by clinical presentation and flow-volume loop analysis.

Conclusion

Based on these preliminary findings, the combination of diaphragmatic ultrasound and inspired volume measurement should be able to provide valuable information in the assessment of upper airway stenosis. Further prospective studies are warranted to confirm its clinical utility.

Abstract Image

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膈超声联合吸入容积检测上气道阻塞

背景：上呼吸道狭窄可能长时间未被诊断。超声允许评估呼吸系统疾病对膈功能的影响。方法对3例有上呼吸道梗阻症状的患者进行横膈膜超声检查。同时，吸气量是在每次呼吸的基础上测量的。通过吸气量除以漂移时间计算静呼吸和深呼吸时的吸气流量。结果通过测量偏移和增厚分数，所有病例的膈功能均得以保留。然而，横膈膜漂移的时间分布与健康人不同。通过临床表现和流量-容量循环分析，观察到吸气流量减少，似乎与梗阻的严重程度有关。结论基于这些初步发现，膈超声和吸入容积测量相结合可以为评估上气道狭窄提供有价值的信息。需要进一步的前瞻性研究来证实其临床应用。

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来源期刊

Clinical Physiology and Functional Imaging 医学-生理学

CiteScore

3.40

自引率

5.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Clinical Physiology and Functional Imaging publishes reports on clinical and experimental research pertinent to human physiology in health and disease. The scope of the Journal is very broad, covering all aspects of the regulatory system in the cardiovascular, renal and pulmonary systems with special emphasis on methodological aspects. The focus for the journal is, however, work that has potential clinical relevance. The Journal also features review articles on recent front-line research within these fields of interest. Covered by the major abstracting services including Current Contents and Science Citation Index, Clinical Physiology and Functional Imaging plays an important role in providing effective and productive communication among clinical physiologists world-wide.