Ultrasonographic findings of the normal diaphragm: thickness and contractility

Seok, Jung Im; Kim, Shin Yeop; Walker, Francis O.; Kwak, Sang Gyu; Kwon, Doo Hyuk

doi:10.14253/acn.2017.19.2.131

Cited by 10 publications

(10 citation statements)

References 15 publications

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“…11 Trans-diaphragmatic pressure measurement and electromyogram are invasive and technically challenging. 10,12 Ultrasound is safe, cheaper, easy to handle, portable, radiation-free, non-invasive, simple to operate, needs less expertise and one of the highly sensitive imaging modalities for evaluation of diaphragm and its related pathology. Diaphragmatic ultrasound is considered 93% sensitive and 100% specific for the diagnosis of neuromuscular diaphragmatic dysfunction.…”

Section: Discussionmentioning

confidence: 99%

Sonographic assessment of thickness of normal diaphragm by B mode ultrasound

Devkota¹,

Gupta²

2022

J. Kathmandu Med. Coll.

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Background: The thickness of diaphragm and diaphragmatic thickness fraction can be assessed by ultrasonography which can be used in early detection of the neuromuscular conditions and follow-up. Objectives: To measure the thickness of diaphragm during inspiration and expiration; and diaphragmatic thickness fraction by B mode ultrasound in healthy patients. Methods: An analytical cross-sectional study was conducted in 260 patients. Data were collected from 2020 July 10 to 2021 July 9 in Department of Radiology, BPKIHS after ethical clearance. Patients who were referred for sonographic evaluation and without neurological complains were included. Purposive sampling was done. Inferential statistical analysis was done applying SPSS v.11.5. Results: Mean diaphragmatic thickness on deep inspiration was found to be 2.80 ± 0.57 mm (95% CI 2.73-2.87 mm) and 2.71 ± 0.53 mm (95% CI 2.64-2.77 mm) on right and left side respectively. Mean diaphragmatic thickness on end expiration was found to be 2.01 ± 0.41 mm (95% CI 1.96-2.06 mm) and 1.97 ± 0.40 mm (95% CI 1.92-2.01 mm) respectively on right and left side. Mean diaphragmatic thickness fraction was observed 40 ± 7.79% (22-67%) and 38 ± 7.98% (22- 60%) on right and left side respectively. The mean difference between right and left side on inspiration was found to be statistically significant. A weak positive correlation of diaphragmatic thickness with BMI on both sides and on both during inspiration and expiration was seen. There was no statistically significant correlation of diaphragmatic thickness fraction with age and BMI. Conclusion: Sonographic diaphragm thickness measurement and diaphragm thickness fraction can provide both anatomical and physiological evaluation quickly.

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Section: Discussionmentioning

confidence: 99%

Sonographic assessment of thickness of normal diaphragm by B mode ultrasound

Devkota¹,

Gupta²

2022

J. Kathmandu Med. Coll.

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“…Normal reference values for the thickness of the diaphragm and the DTF in a Korean pop ulation were reported. 18 Although the DTF was affected less by demographic factors, the thickness of the diaphragm was significantly greater in men compared with women and was significantly correlated with weight, height, and body mass index (BMI). 18 For identification of acute onset diaphragm paralysis, the DTF has been proposed to be more sensitive than measurement of thickness.…”

Section: Assessment Of Respiratory Functionmentioning

confidence: 97%

Neuromuscular Ultrasound in Amyotrophic Lateral Sclerosis

Seok

2019

J Neurosonol Neuroimag

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“…횡격막을 평가하는 검사로는 흉부 X선검사, 횡격막신경전도검 사, 횡격막침근전도검사, 투시검사, 흉부 컴퓨터단층촬영 등이 있 다. Reprinted from Seok at al. 5 with the permission. The reference range is determined as the mean+2SD for normally distributed data and from 97.5th percentile for non-normally distributed data.…”

Section: 서 론mentioning

confidence: 99%

Ultrasound Imaging of the Diaphragm

Seok¹

2021

J Korean Neurol Assoc

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The diaphragm is the major muscle of respiration and its dysfunction is associated with problems ranging from orthopnea to prolonged recovery from surgery or ventilator management. Common causes of diaphragm dysfunction include phrenic neuropathy, motor neuron disease, neuromuscular junction disorders, and myopathy. This article reviews sonographic findings of normal diaphragm, including key quantitative ultrasound measurements that are helpful in the evaluation of diaphragm. It also discusses various clinical application of this technique in diagnosis of neuromuscular diseases.

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Ultrasonographic findings of the normal diaphragm: thickness and contractility

Cited by 10 publications

References 15 publications

Sonographic assessment of thickness of normal diaphragm by B mode ultrasound

Sonographic assessment of thickness of normal diaphragm by B mode ultrasound

Neuromuscular Ultrasound in Amyotrophic Lateral Sclerosis

Ultrasound Imaging of the Diaphragm

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