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Yao XY, Li HM, Sun BW, Zhang YY, Feng JG, Jia J, Liu L. Ultrasound assessment of diaphragmatic dysfunction in non-critically ill patients: relevant indicators and update. Front Med (Lausanne) 2024; 11:1389040. [PMID: 38957305 PMCID: PMC11217340 DOI: 10.3389/fmed.2024.1389040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 06/03/2024] [Indexed: 07/04/2024] Open
Abstract
Diaphragm dysfunction (DD) can be classified as mild, resulting in diaphragmatic weakness, or severe, resulting in diaphragmatic paralysis. Various factors such as prolonged mechanical ventilation, surgical trauma, and inflammation can cause diaphragmatic injury, leading to negative outcomes for patients, including extended bed rest and increased risk of pulmonary complications. Therefore, it is crucial to protect and monitor diaphragmatic function. Impaired diaphragmatic function directly impacts ventilation, as the diaphragm is the primary muscle involved in inhalation. Even unilateral DD can cause ventilation abnormalities, which in turn lead to impaired gas exchange, this makes weaning from mechanical ventilation challenging and contributes to a higher incidence of ventilator-induced diaphragm dysfunction and prolonged ICU stays. However, there is insufficient research on DD in non-ICU patients, and DD can occur in all phases of the perioperative period. Furthermore, the current literature lacks standardized ultrasound indicators and diagnostic criteria for assessing diaphragmatic dysfunction. As a result, the full potential of diaphragmatic ultrasound parameters in quickly and accurately assessing diaphragmatic function and guiding diagnostic and therapeutic decisions has not been realized.
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Affiliation(s)
- Xin-Yu Yao
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
| | - Hong-Mei Li
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Department of Anesthesiology, Chengdu Fifth People’s Hospital, Chengdu, China
| | - Bo-Wen Sun
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
| | - Ying-Ying Zhang
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
| | - Jian-Guo Feng
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
| | - Jing Jia
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
| | - Li Liu
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, China
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Zhang Q, Yang D, Zhu Y, Liu Y, Ye X. An optimized optical-flow-based method for quantitative tracking of ultrasound-guided right diaphragm deformation. BMC Med Imaging 2023; 23:108. [PMID: 37592200 PMCID: PMC10436632 DOI: 10.1186/s12880-023-01066-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 07/26/2023] [Indexed: 08/19/2023] Open
Abstract
OBJECTIVES To develop a quantitative analysis method for right diaphragm deformation. This method is based on optical flow and applied to diaphragm ultrasound imaging. METHODS This study enrolls six healthy subjects and eight patients under mechanical ventilation. Dynamic images with 3-5 breathing cycles were acquired from three directions of right diaphragm by a portable ultrasound system. Filtering and density clustering algorithms are used for denoising Digital Imaging and Communications in Medicine (DICOM) data. An optical flow based method is applied to track movements of the right diaphragm. An improved drift correction algorithm is used to optimize the results. The method can automatically analyze the respiratory cycle, inter-frame/cumulative vertical and horizontal displacements, and strain of the input right diaphragm ultrasound image. RESULTS The optical-flow-based diaphragm ultrasound image motion tracking algorithm can accurately track the right diaphragm during respiratory motion. There are significant differences in horizontal and vertical displacements in each section (p-values < 0.05 for all). Significant differences are found between healthy subjects and mechanical ventilation patients for both horizontal and vertical displacements in Section III (p-values < 0.05 for both). There is no significant difference in global strain in each section between healthy subjects and mechanical ventilation patients (p-values > 0.05 for all). CONCLUSIONS The developed method can quantitatively evaluate the inter-frame/cumulative displacement of the diaphragm in both horizontal and vertical directions, as well as the global strain in three different imaging planes. The above indicators can be used to evaluate diaphragmatic dynamics.
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Affiliation(s)
- Qi Zhang
- School of Information Science and Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Dawei Yang
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, 200032, PR China
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, Shanghai, 200237, PR China
| | - Yu Zhu
- School of Information Science and Engineering, East China University of Science and Technology, Shanghai, 200237, PR China.
- Shanghai Engineering Research Center of Internet of Things for Respiratory Medicine, Shanghai, 200237, PR China.
| | - Yatong Liu
- School of Information Science and Engineering, East China University of Science and Technology, Shanghai, 200237, PR China
| | - Xiong Ye
- School of Clinical Medicine, Shanghai University of Medicine & Health Sciences, Shanghai, 201318, PR China.
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Kang J, Han K, Hyung J, Hong GR, Yoo Y. Noninvasive Aortic Ultrafast Pulse Wave Velocity Associated With Framingham Risk Model: in vivo Feasibility Study. Front Cardiovasc Med 2022; 9:749098. [PMID: 35174228 PMCID: PMC8841772 DOI: 10.3389/fcvm.2022.749098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 01/03/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundAortic pulse wave velocity (PWV) enables the direct assessment of aortic stiffness, which is an independent risk factor of cardiovascular (CV) events. The aim of this study is to evaluate the association between aortic PWV and CV risk model classified into three groups based on the Framingham risk score (FRS), i.e., low-risk (<10%), intermediate-risk (10~20%) and high-risk (>20%).MethodsTo noninvasively estimate local PWV in an abdominal aorta, a high-spatiotemporal resolution PWV measurement method (>1 kHz) based on wide field-of-view ultrafast curved array imaging (ufcPWV) is proposed. In the ufcPWV measurement, a new aortic wall motion tracking algorithm based on adaptive reference frame update is performed to compensate errors from temporally accumulated out-of-plane motion. In addition, an aortic pressure waveform is simultaneously measured by applanation tonometry, and a theoretical PWV based on the Bramwell-Hill model (bhPWV) is derived. A total of 69 subjects (aged 23–86 years) according to the CV risk model were enrolled and examined with abdominal ultrasound scan.ResultsThe ufcPWV was significantly correlated with bhPWV (r = 0.847, p < 0.01), and it showed a statistically significant difference between low- and intermediate-risk groups (5.3 ± 1.1 vs. 8.3 ± 3.1 m/s, p < 0.01), and low- and high-risk groups (5.3 ± 1.1 vs. 10.8 ± 2.5 m/s, p < 0.01) while there is no significant difference between intermediate- and high-risk groups (8.3 ± 3.1 vs. 10.8 ± 2.5 m/s, p = 0.121). Moreover, it showed a significant difference between two evaluation groups [low- (<10%) vs. higher-risk group (≥10%)] (5.3 ± 1.1 vs. 9.4 ± 3.1 m/s, p < 0.01) when the intermediate- and high-risk groups were merged into a higher-risk group.ConclusionThis feasibility study based on CV risk model demonstrated that the aortic ufcPWV measurement has the potential to be a new approach to overcome the limitations of conventional systemic measurement methods in the assessment of aortic stiffness.
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Affiliation(s)
- Jinbum Kang
- Deparment of Electronic Engineering, Sogang University, Seoul, South Korea
| | - Kanghee Han
- Deparment of Electronic Engineering, Sogang University, Seoul, South Korea
| | - Jihyun Hyung
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Yonsei University Health System, Seoul, South Korea
| | - Geu-Ru Hong
- Division of Cardiology, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Yonsei University Health System, Seoul, South Korea
| | - Yangmo Yoo
- Deparment of Electronic Engineering, Sogang University, Seoul, South Korea
- Deparment of Biomedical Engineering, Sogang University, Seoul, South Korea
- *Correspondence: Yangmo Yoo
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