Diaphragmatic excursion correlates with exercise capacity and dynamic hyperinflation in COPD patients Article Swipe
Masashi Shiraishi
,
Yuji Higashimoto
,
Ryuji Sugiya
,
Hiroki Mizusawa
,
Yu Takeda
,
Shuhei Fujita
,
Osamu Nishiyama
,
Shintarou Kudo
,
Tamotsu Kimura
,
Yasutaka Chiba
,
Kanji Fukuda
,
Yuji Tohda
·
YOU?
·
· 2020
· Open Access
·
· DOI: https://doi.org/10.1183/23120541.00589-2020
YOU?
·
· 2020
· Open Access
·
· DOI: https://doi.org/10.1183/23120541.00589-2020
Background Although the pathophysiological mechanisms involved in the development of dyspnoea and poor exercise tolerance in patients with COPD are complex, dynamic lung hyperinflation (DLH) plays a central role. Diaphragmatic excursions can be measured by ultrasonography (US) with high intra- and interobserver reliability. The objective of this study was to evaluate the effect of diaphragmatic excursions as assessed by US on exercise tolerance and DLH in patients with COPD. Methods Patients with COPD (n=20) and age-matched control subjects (n=20) underwent US, which was used to determine the maximum level of diaphragmatic excursion (DE max ). Ventilation parameters, including the change in inspiratory capacity (ΔIC), were measured in the subjects during cardiopulmonary exercise testing (CPET). We examined the correlations between DE max and the ventilation parameters. Results The DE max of patients with COPD was significantly lower than that of the controls (45.0±12.8 mm versus 64.6±6.3 mm, respectively; p<0.01). The perception of peak dyspnoea (Borg scale) was significantly negatively correlated with DE max in patients with COPD. During CPET, oxygen uptake/weight ( V ′ O 2 / W ) and minute ventilation ( V ′ E ) were significantly positively correlated with DE max , while V ′ E / V ′ O 2 and V ′ E /carbon dioxide output ( V ′ CO 2 ) were significantly negatively correlated with DE max in patients with COPD. DE max was also significantly positively correlated with ΔIC, reflecting DLH, and with V ′ O 2 / W , reflecting exercise capacity. Conclusion Reduced mobility of the diaphragm was related to decreased exercise capacity and increased dyspnoea due to dynamic lung hyperinflation in COPD patients.
Related Topics
Concepts
Medicine
COPD
Dynamic hyperinflation
Ventilation (architecture)
Diaphragmatic breathing
Diaphragm (acoustics)
Cardiology
Internal medicine
Hyperinflation
Respiratory minute volume
Lung volumes
Physical therapy
Respiratory system
Lung
Pathology
Physics
Engineering
Economics
Loudspeaker
Monetary economics
Acoustics
Alternative medicine
Monetary policy
Mechanical engineering
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1183/23120541.00589-2020
- https://openres.ersjournals.com/content/erjor/6/4/00589-2020.full.pdf
- OA Status
- gold
- Cited By
- 65
- References
- 42
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3092448738
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
-
https://openalex.org/W3092448738Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.1183/23120541.00589-2020Digital Object Identifier
- Title
-
Diaphragmatic excursion correlates with exercise capacity and dynamic hyperinflation in COPD patientsWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2020Year of publication
- Publication date
-
2020-10-01Full publication date if available
- Authors
-
Masashi Shiraishi, Yuji Higashimoto, Ryuji Sugiya, Hiroki Mizusawa, Yu Takeda, Shuhei Fujita, Osamu Nishiyama, Shintarou Kudo, Tamotsu Kimura, Yasutaka Chiba, Kanji Fukuda, Yuji TohdaList of authors in order
- Landing page
-
https://doi.org/10.1183/23120541.00589-2020Publisher landing page
- PDF URL
-
https://openres.ersjournals.com/content/erjor/6/4/00589-2020.full.pdfDirect link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://openres.ersjournals.com/content/erjor/6/4/00589-2020.full.pdfDirect OA link when available
- Concepts
-
Medicine, COPD, Dynamic hyperinflation, Ventilation (architecture), Diaphragmatic breathing, Diaphragm (acoustics), Cardiology, Internal medicine, Hyperinflation, Respiratory minute volume, Lung volumes, Physical therapy, Respiratory system, Lung, Pathology, Physics, Engineering, Economics, Loudspeaker, Monetary economics, Acoustics, Alternative medicine, Monetary policy, Mechanical engineeringTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
65Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 10, 2024: 19, 2023: 18, 2022: 12, 2021: 6Per-year citation counts (last 5 years)
- References (count)
-
42Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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| abstract_inverted_index.objective | 44 |
| abstract_inverted_index.patients. | 272 |
| abstract_inverted_index.tolerance | 14, 62 |
| abstract_inverted_index.underwent | 79 |
| abstract_inverted_index.Background | 0 |
| abstract_inverted_index.Conclusion | 250 |
| abstract_inverted_index.correlated | 158, 189, 219, 233 |
| abstract_inverted_index.excursions | 30, 55 |
| abstract_inverted_index.mechanisms | 4 |
| abstract_inverted_index.negatively | 157, 218 |
| abstract_inverted_index.perception | 149 |
| abstract_inverted_index.positively | 188, 232 |
| abstract_inverted_index.reflecting | 236, 247 |
| abstract_inverted_index.(45.0±12.8 | 141 |
| abstract_inverted_index.Ventilation | 95 |
| abstract_inverted_index.age-matched | 75 |
| abstract_inverted_index.development | 8 |
| abstract_inverted_index.inspiratory | 101 |
| abstract_inverted_index.p<0.01). | 147 |
| abstract_inverted_index.parameters, | 96 |
| abstract_inverted_index.parameters. | 124 |
| abstract_inverted_index.ventilation | 123, 180 |
| abstract_inverted_index.correlations | 117 |
| abstract_inverted_index.reliability. | 42 |
| abstract_inverted_index.Diaphragmatic | 29 |
| abstract_inverted_index.diaphragmatic | 54, 90 |
| abstract_inverted_index.interobserver | 41 |
| abstract_inverted_index.respectively; | 146 |
| abstract_inverted_index.significantly | 134, 156, 187, 217, 231 |
| abstract_inverted_index.uptake/weight | 169 |
| abstract_inverted_index.hyperinflation | 23, 269 |
| abstract_inverted_index.cardiopulmonary | 110 |
| abstract_inverted_index.ultrasonography | 35 |
| abstract_inverted_index.pathophysiological | 3 |
| cited_by_percentile_year.max | 100 |
| cited_by_percentile_year.min | 98 |
| countries_distinct_count | 1 |
| institutions_distinct_count | 12 |
| citation_normalized_percentile.value | 0.96223182 |
| citation_normalized_percentile.is_in_top_1_percent | False |
| citation_normalized_percentile.is_in_top_10_percent | True |