Sonographic Assessment of Diaphragm Thickness and Its Effect on Inspiratory Muscles' Strength in Patients with Chronic Obstructive Pulmonary Disease

Hafez, Manal R.; Abo-Elkheir, Omaima I.

doi:10.5152/ejp.2017.42104

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…Therefore, airflow restriction resulting in air trapping and pulmonary hyperinflation was demonstrated to play a major role in the dynamic thickening process. Likewise, Hafez et al based the association of thickening fraction with FEV 1 on the fact that airway obstruction, which increases with the progression of COPD, causes dynamic air trapping and limits its contractility [ 34 ]. Corbellini et al demonstrated that diaphragm mobility was associated with IC and IC/TLC in their study examining individuals with moderate, severe, and very severe COPD and stated that this was caused by the effect of dynamic pulmonary hyperinflation on diaphragm mobility [ 15 ].…”

Section: Discussionmentioning

confidence: 99%

Examination of diaphragm thickness, mobility and thickening fraction in individuals with COPD of different severity

TOPCUOĞLU¹,

YÜMİN²,

HIZAL³

et al. 2022

Turkish Journal of Medical Sciences

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Background/aim Diaphragm thickness and mobility assessed by ultrasound in individuals with Chronic Obstructive Pulmonary Disease (COPD) reflect the function of the diaphragm. The aim of this study is to compare the diaphragm thickness, mobility, and thickening fraction in individuals with COPD of different severity and healthy individuals and examine the relationship between these parameters and pulmonary function test parameters. Materials and methods A cross-sectional observational study design was used. Thirty individuals (mild = 11; moderate = 13; severe = 6) with COPD and 29 healthy male individuals aged between 40–75 years were included in the study. The individuals included in the study were evaluated between October 2020/May 2021. Pulmonary functions were measured with a spirometer, while diaphragm thickness, mobility, and thickening fraction were measured by ultrasound. Results The right and left diaphragm thickness, mobility, thickness variation, thickening fraction, and mobility were lower in individuals with COPD than in healthy individuals (p < 0.05). The left Functional Residual Capacity (FRC) diaphragm thickness, right Total Lung Capacity (TLC), and FRC diaphragm thickness were higher in mild COPD than moderate COPD and moderate COPD than severe COPD (p < 0.05). The right diaphragmatic thickening fraction and rate were higher in mild COPD than in moderate and severe COPD (p < 0.05). The left mobility was lower in severe COPD than in mild COPD (p < 0.05). Conclusion Diaphragm ultrasound parameters decrease as disease severity increases in individuals with COPD. We think that adding diaphragm ultrasound parameters together with pulmonary function test to the evaluation of individuals with COPD will provide additional contributions to determining the course of the disease.

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Section: Discussionmentioning

confidence: 99%

Examination of diaphragm thickness, mobility and thickening fraction in individuals with COPD of different severity

TOPCUOĞLU¹,

YÜMİN²,

HIZAL³

et al. 2022

Turkish Journal of Medical Sciences

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The Effects of Various Approaches to Lobectomies on Respiratory Muscle Strength, Diaphragm Thickness, and Exercise Capacity in Lung Cancer

Sirakaya,

Calik Kutukcu,

Onur

et al. 2024

Ann Surg Oncol

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Background The most common surgery for non-small cell lung cancer is lobectomy, which can be performed through either thoracotomy or video-assisted thoracic surgery (VATS). Insufficient research has examined respiratory muscle function and exercise capacity in lobectomy performed using conventional thoracotomy (CT), muscle-sparing thoracotomy (MST), or VATS. This study aimed to assess and compare respiratory muscle strength, diaphragm thickness, and exercise capacity in lobectomy using CT, MST, and VATS. Methods The primary outcomes were changes in respiratory muscle strength, diaphragm thickness, and exercise capacity. Maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP) were recorded for respiratory muscle strength. The 6-min walk test (6MWT) was used to assess functional exercise capacity. Diaphragm thickness was measured using B-mode ultrasound. Results The study included 42 individuals with lung cancer who underwent lobectomy via CT (n = 14), MST (n = 14), or VATS (n = 14). Assessments were performed on the day before surgery and on postoperative day 20 (range 17–25 days). The decrease in MIP (p < 0.001), MEP (p = 0.003), 6MWT (p < 0.001) values were lower in the VATS group than in the CT group. The decrease in 6MWT distance was lower in the MST group than in the CT group (p = 0.012). No significant differences were found among the groups in terms of diaphragmatic muscle thickness (p > 0.05). Conclusion The VATS technique appears superior to the CT technique in terms of preserving respiratory muscle strength and functional exercise capacity. Thoracic surgeons should refer patients to physiotherapists before lobectomy, especially patients undergoing CT. If lobectomy with VATS will be technically difficult, MST may be an option preferable to CT because of its impact on exercise capacity.

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Sonographic Assessment of Diaphragm Thickness and Its Effect on Inspiratory Muscles' Strength in Patients with Chronic Obstructive Pulmonary Disease

Cited by 2 publications

References 18 publications

Examination of diaphragm thickness, mobility and thickening fraction in individuals with COPD of different severity

Examination of diaphragm thickness, mobility and thickening fraction in individuals with COPD of different severity

The Effects of Various Approaches to Lobectomies on Respiratory Muscle Strength, Diaphragm Thickness, and Exercise Capacity in Lung Cancer

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