Relationship Between Diaphragm Thickness, Thickening Fraction, Dome Excursion, and Respiratory Pressures in Healthy Subjects: An Ultrasound Study.

IF 4.6 2区医学 Q1 RESPIRATORY SYSTEM

Lung Pub Date : 2024-04-01 Epub Date: 2024-03-23 DOI:10.1007/s00408-024-00686-2

Toru Yamada, Taro Minami, Shumpei Yoshino, Ken Emoto, Suguru Mabuchi, Ryoichi Hanazawa, Akihiro Hirakawa, Masayoshi Hashimoto

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引用次数: 0

Abstract

Purpose: Diaphragm ultrasonography is used to identify causes of diaphragm dysfunction. However, its correlation with pulmonary function tests, including maximal inspiratory (MIP) and expiratory pressures (MEP), remains unclear. This study investigated this relationship by measuring diaphragm thickness, thickening fraction (TF), and excursion (DE) using ultrasonography, and their relationship to MIP and MEP. It also examined the influence of age, sex, height, and BMI on these measures.

Methods: We recruited healthy Japanese volunteers and conducted pulmonary function tests and diaphragm ultrasonography in a seated position. Diaphragm ultrasonography was performed during quiet breathing (QB) and deep breathing (DB) to measure the diaphragm thickness, TF, and DE. A multivariate analysis was conducted, adjusting for age, sex, height, and BMI.

Results: Between March 2022 and January 2023, 109 individuals (56 males) were included from three facilities. The mean (standard deviation) MIP and MEP [cmH2O] were 72.2 (24.6) and 96.9 (35.8), respectively. Thickness [mm] at the end of expiration was 1.7 (0.4), TF [%] was 50.0 (25.9) during QB and 110.7 (44.3) during DB, and DE [cm] was 1.7 (0.6) during QB and 4.4 (1.4) during DB. Multivariate analysis revealed that only DE (DB) had a statistically significant relationship with MIP and MEP (p = 0.021, p = 0.008). Sex, age, and BMI had a statistically significant influence on relationships between DE (DB) and MIP (p = 0.008, 0.048, and < 0.001, respectively).

Conclusion: In healthy adults, DE (DB) has a relationship with MIP and MEP. Sex, age, and BMI, but not height, are influencing factors on this relationship.

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健康受试者的膈肌厚度、增厚分数、穹隆偏移和呼吸压力之间的关系：超声波研究。

目的：膈肌超声波检查用于确定膈肌功能障碍的原因。然而，其与肺功能测试（包括最大吸气压（MIP）和呼气压（MEP））的相关性仍不清楚。本研究通过使用超声波造影测量膈肌厚度、增厚分数（TF）和偏移量（DE）以及它们与最大吸气压和呼气压的关系来研究这种关系。研究还探讨了年龄、性别、身高和体重指数对这些测量指标的影响：我们招募了健康的日本志愿者，并在坐姿下进行了肺功能测试和膈肌超声波检查。在安静呼吸（QB）和深呼吸（DB）时进行横膈膜超声波检查，测量横膈膜厚度、TF 和 DE。在对年龄、性别、身高和体重指数进行调整后，进行了多变量分析：结果：2022 年 3 月至 2023 年 1 月期间，三家机构共纳入 109 人（56 名男性）。MIP和MEP的平均值（标准差）[cmH2O]分别为72.2（24.6）和96.9（35.8）。呼气末厚度[毫米]为 1.7 (0.4)，TF[%]在 QB 时为 50.0 (25.9)，在 DB 时为 110.7 (44.3)，DE[厘米]在 QB 时为 1.7 (0.6)，在 DB 时为 4.4 (1.4)。多变量分析表明，只有 DE（DB）与 MIP 和 MEP 有显著的统计学关系（p = 0.021，p = 0.008）。性别、年龄和体重指数对 DE (DB) 和 MIP 之间的关系有显著的统计学影响（p = 0.008、0.048 和结论：健康成年人的 DE（DB）与 MIP 和 MEP 有一定关系。性别、年龄和体重指数（而非身高）是这一关系的影响因素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Lung 医学-呼吸系统

CiteScore

9.10

自引率

10.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Lung publishes original articles, reviews and editorials on all aspects of the healthy and diseased lungs, of the airways, and of breathing. Epidemiological, clinical, pathophysiological, biochemical, and pharmacological studies fall within the scope of the journal. Case reports, short communications and technical notes can be accepted if they are of particular interest.