ArticleLung2024
Diaphragm Ultrasonography: Reference Values and Influencing Factors for Thickness, Thickening Fraction, and Excursion in the Seated Position.
Article in Lung, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 15 citations in OpenAlex.
- Sex-Specific Cut-off Values for Respiratory Muscle Strength in Older Women: Screening Implications for Respiratory Sarcopenia.Journal of Korean medical science · 2026Article
- The Assessment of the Tendon of Insertion of the Iliopsoas Muscle in Dogs Using Diagnostic Ultrasound Has Good Intraobserver Consistency but Lacks Interobserver Consistency.Animals : an open access journal from MDPI · 2026Article
- Influence of Body Position Changes on Diaphragmatic Excursion Assessed by Ultrasonography in a Healthy Population.Journal of functional morphology and kinesiology · 2026Article
- Influence of body position on diaphragmatic thickening fraction in healthy adults: advancing the standardization of diaphragm ultrasonography.Frontiers in physiology · 2026Article
- Diaphragmatic ultrasound-derived MV×DE: a novel predictor of postextubation adverse respiratory events in general anesthesia patients (observational study).BMC pulmonary medicine · 2025Observational
- Association between diaphragm excursion and whole-body muscle mass in older adults: an observational study.Scientific reports · 2025Observational
- Advancements in imaging techniques for monitoring the respiratory muscles.Critical care (London, England) · 2025Review
- The Perception of the Diaphragm with Ultrasound: Always There Yet Overlooked?Life (Basel, Switzerland) · 2025Review
- The Impact of Ageing on Diaphragm Function and Maximal Inspiratory Pressure: A Cross-Sectional Ultrasound Study.Diagnostics (Basel, Switzerland) · 2025Article
- Relationship Between Diaphragm Function and Sarcopenia Assessed by Ultrasound: A Cross-Sectional Study.Diagnostics (Basel, Switzerland) · 2025Article
- Diaphragm Ultrasound in Different Clinical Scenarios: A Review with a Focus on Older Patients.Geriatrics (Basel, Switzerland) · 2024Review
- Article
- LUNG Year in Review: 2023.Lung · 2024Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
Abstract
introductionMeasurements of diaphragm function by ultrasonography are affected by body position, but reference values in the seated position have not been established for an Asian population. This study aimed to determine reference values for diaphragm thickness, thickening fraction, and dome excursion by ultrasonography and to investigate the effects of sex, height, and body mass index.
methodsDiaphragm ultrasonography was performed on 109 seated Japanese volunteers with normal respiratory function who were enrolled between March 2022 and January 2023. Thickness, thickening fraction, and excursion were measured. Reference values and the measurement success rate were calculated. Multivariate analysis adjusted for sex, height, and body mass index was performed.
resultsThe measurement success rate was better for thickness than for excursion. The mean (lower limit of normal) values on the right/left sides were as follows. During quiet breathing, thickness at end expiration(mm) was 1.7 (0.9)/1.6 (0.80), thickening fraction(%) was 50 (0.0)/52 (0.0), and excursion(cm) was 1.7 (0.5)/1.9 (0.5). During deep breathing, the thickening fraction was 111 (24)/107 (22), and the excursion was 4.4 (1.7)/4.1 (2.0). In multivariate analysis, body mass index was positively associated with thickness but not with the thickening fraction.
conclusionThe reference values in this study were smaller than those in previous reports from Europe. Considering that thickness is influenced by body mass index, using Western reference values in Asia, where the average body mass index is lower, might not be appropriate. The thickening fraction in deep breathing is unaffected by other items and can be used more universally.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.