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12 results on '"Liu-sheng Hou"'

1. Extracorporeal membrane oxygenation for coronavirus disease 2019-associated acute respiratory distress syndrome: Report of two cases and review of the literature

Author

Wei-Yan Soh, Xiaozu Liao, Junlin Wen, Jian-Wei Li, Yong Yuan, Wen-Jun Gao, Qi-Zhe Sun, Wei-Jia Wang, Binfei Li, Liqiang Wang, Zhou Cheng, Liu-sheng Hou, and Daqing Ma

Subjects
2019-20 coronavirus outbreak, Complications, Coronavirus disease 2019 (COVID-19), medicine.medical_treatment, Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), Disease, Acute respiratory distress, medicine.disease_cause, 03 medical and health sciences, 0302 clinical medicine, Case report, medicine, Extracorporeal membrane oxygenation, Coronavirus, Acute respiratory distress syndrome, business.industry, SARS-CoV-2, COVID-19, General Medicine, Virology, surgical procedures, operative, 030220 oncology & carcinogenesis, 030211 gastroenterology & hepatology, business
Abstract

BACKGROUND Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus-2, is a worldwide pandemic. Some COVID-19 patients develop severe acute respiratory distress syndrome and progress to respiratory failure. In such cases, extracorporeal membrane oxygenation (ECMO) treatment is a necessary life-saving procedure. CASE SUMMARY Two special COVID-19 cases—one full-term pregnant woman and one elderly (72-year-old) man—were treated by veno-venous (VV)-ECMO in the Second People’s Hospital of Zhongshan, Zhongshan City, Guangdong Province, China. Both patients had developed refractory hypoxemia shortly after hospital admission, despite conventional support, and were therefore managed by VV-ECMO. Although both experienced multiple ECMO-related complications on top of the COVID-19 disease, their conditions improved gradually. Both patients were weaned successfully from the ECMO therapy. At the time of writing of this report, the woman has recovered completely and been discharged from hospital to home; the man remains on mechanical ventilation, due to respiratory muscle weakness and suspected lung fibrosis. As ECMO itself is associated with various complications, it is very important to understand and treat these complications to achieve optimal outcome. CONCLUSION VV-ECMO can provide sufficient gas exchange for COVID-19 patients with acute respiratory distress syndrome. However, it is crucial to understand and treat ECMO-related complications.

Published
2021

2. First successful treatment of a COVID-19 pregnant woman with severe ARDS by combining early mechanical ventilation and ECMO

Author

Liu-sheng Hou, Jianwei Li, Bin-fei Li, Mingxing Li, Yong Yuan, Kai Guo, and Wei-Jia Wang

Subjects
Adult, Pulmonary and Respiratory Medicine, ARDS, Coronavirus disease 2019 (COVID-19), medicine.medical_treatment, Acute respiratory distress, mechanical ventilation, 030204 cardiovascular system & hematology, Critical Care and Intensive Care Medicine, Article, Pulmonary function testing, 03 medical and health sciences, Extracorporeal Membrane Oxygenation, 0302 clinical medicine, Pregnancy, medicine, Extracorporeal membrane oxygenation, Humans, Pregnancy Complications, Infectious, Mechanical ventilation, Respiratory Distress Syndrome, SARS-CoV-2, business.industry, COVID-19, Pregnant female, medicine.disease, Respiration, Artificial, Dyspnea, 030228 respiratory system, Prgnance, Anesthesia, Female, Pregnant Women, ECMO, Cardiology and Cardiovascular Medicine, business
Abstract

The novel coronavirus (COVID-19) has become a global pandemic outbreak. Patients with COVID-19 are prone to progress to acute respiratory distress syndrome (ARDS), and even severe ARDS with ineffective mechanical ventilation, and an extremely high mortality. Extracorporeal membrane oxygenation (ECMO) provides effective respiratory support and saves time for the treatment of severe COVID-19. The present study reports that a 31-year-old pregnant female infected by COVID-19, who suffered from fever, dyspnea, and rapid ARDS. The patient's pulmonary function gradually recovered by combining early mechanical ventilation and ECMO, and finally, this patient was successfully weaned from ECMO and the ventilator. No fibrosis lesions were found in the chest CT, and the patient recovered very well after leaving from the hospital for one month.

Published
2021
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6. [Clinical application of extracorporeal membrane oxygenation for treatment of adult refractory cardiogenic shock]

Author

Liu-sheng, Hou, Gang, Xie, Jian-wei, Li, Chong-hui, Jiang, Yong, Yuan, Bin-fei, Li, Hai-ming, Jiang, Ye, Ning, Gui-shen, Wu, Wei-hua, Zheng, and Shuang-biao, Zhao

Subjects
Adult, Male, Extracorporeal Membrane Oxygenation, Shock, Cardiogenic, Humans, Female, Middle Aged, Retrospective Studies
Abstract

To summarize the clinical experience of extracorporeal membrane oxygenation (ECMO) treatment for adult refractory cardiogenic shock.From January 2003 to January 2011, patients with refractory cardiogenic shock required veno-arterial ECMO by failure of conventional therapy and intra-aortic balloon pump counterpulsation therapy were retrospectively studied. Patients with severe traumatic brain injury, advanced malignancies and multiple organ failure were excluded. Patients were divided into weaned group (n = 31) and not weaned group (n = 23) according to the ECMO weaning.The duration of ECMO was 24.16 (14.12, 56.75) hours. Twenty-two out of 31 patients in the weaned group survived and were discharged, 9 patients died after successfully weaned from ECMO (5 due to multisystem organ failure, 2 due to reoccurred cardiogenic shock, 1 due to infectious shock and 1 due to disseminated or diffuse intravascular coagulation). Pre-ECMO mean arterial pressure, ejection fraction, the duration of ECMO were significantly higher while pre-ECMO blood lactate [(8.64 ± 3.17) vs. (14.44 ± 2.52) , P0.01], the duration of ROSC [ (16.70 ± 5.29) vs. (35.64 ± 5.89), P0.01] and multisystem organ failure [0 vs. 17.4% (4/23) , P0.05] were lower in weaned group than in not wean group.ECMO is an effective mechanical assistant therapy strategy for adult refractory cardiogenic shock patients. Timely applying this strategy on suitable patients is crucial for the success of ECMO. Cardiac function and reversibility of heart failure are key factors determine the fate of weaned or not weaned ECMO in adult refractory cardiogenic shock patients.

Published
2013

10. Study on Decolorization of Methyl Orange Dye Wastewater by DC Stream Discharge with MgO-CuO-Al2O3 Catalyst

Author

Xie, Hong Duan, Su, Cong, Wang, Chun Yu, Wang, Li Duo, Liu, Sheng Hou, Zhang, Xiao Yin, and Liu, Nan

Abstract

The decolorization of methyl orange wastewater by DC stream discharge with MgO-CuO-Al2O3 catalyst was investigated. The removal efficiency was studied for different experimental parameters. Results showed that the removal efficiency by discharge with catalyst was better than discharge only. The removal efficiency was 98% under the condition of applied voltage 18kV, current 9mA, volume of catalyst 20cm3, initial concentration 40mg/L with treatment for 10min. The intensity of methyl orange absorption peak (465nm) gradually weakened and disappeared by discharge with catalyst, the conjugated system composed of azo group and benzene in the molecular structure was destroyed, methyl orange molecules were degraded effectively.

Published
2014
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11. Finite element analysis of cemented prostheses for hip replacement in elderly patients with comminuted intertrochanteric fracture.

Author

Liu SH, Liu WG, Yin QF, Zhao H, Xiao SP, Wang SJ, and Duan YT

Subjects
Aged, Finite Element Analysis, Humans, Prosthesis Design, Stress, Mechanical, Arthroplasty, Replacement, Hip, Hip Fractures surgery, Hip Prosthesis
Abstract

Background: To determine postoperative stress distribution after cemented arthroplasty in elderly patients with comminuted intertrochanteric fracture, and assist in determining a rational prosthetic stem length., Methods: A three-dimensional (3D) model of intertrochanteric fracture was established using the Mimics and Unigraphics modeling software, which included the 3D model of comminuted intertrochanteric fracture, two long-stem(#4,#5) and one short stem(#3) prostheses, and the mantle layer of cement. The bone defect of the calcar femorale was replaced with a 5-mm thick cement. Then, the 3D finite element model of those materials was established, boundary conditions of force were imposed, and material parameters were set. Accordingly, a finite element analysis was performed to this model in stress., Results: (1) The stress of the femur in the three-stem replacement prosthesis models increased from proximal end to distal end in the same pattern, while a stress concentration region was found at 5 mm from within the distal tip of the short-stem prosthesis (#3), which had a peak value of 67.85 MPa. However, no stress concentration was found on the long-stem prosthesis model. (2) For the short-stem prosthesis, the stress distribution of the cement-prosthesis interface was significantly concentrated in the distal region around the prosthesis end, in which the peak value of the lateral interface exceeded the fatigue strength of the bone cement. However, the biomechanics for the long prosthesis was better appreciated., Conclusion: Long prosthesis stems may theoretically be a better option for comminuted intertrochanteric fractures in elderly patients. However, the application of exceedingly long prosthesis stems would not be a better option., Key Words: Comminuted intertrochanteric fracture, Elderly patients Finite element analysis, Prosthetic replacement.

Published
2020

12. [Biomechanical characteristics of hip prosthesis in hip arthroplasty treating elderly patients with Evans I-III intertrochanteric fracture of femur].

Author

Liu WG, Liu SH, Yin QF, Xiao SP, and Wang SJ

Subjects
Aged, Arthroplasty, Replacement, Hip methods, Biomechanical Phenomena, Bone Cements, Computer Simulation, Female, Finite Element Analysis, Humans, Image Processing, Computer-Assisted, Software, Stress, Mechanical, Arthroplasty, Replacement, Hip instrumentation, Hip Fractures surgery, Hip Prosthesis
Abstract

Objective: To investigate the feasibility of hip arthroplasty in the treatment of elderly patients with Evans I-III intertrochanteric fracture of femur by analyzing its biomechanics characters., Methods: We solved the CT digital image files with the graphics processing software Mimics at DICOM 3.0 standard, and reconstructed the three-dimensional entity of femur with CAD modeling software Unigraphics. Then the fracture line was defined in the model as the line between the tip of greater trochanter and inferior margin of small trochanter, above which the upper bone was removed. Afterwards the two prosthesises with different stem lengths (120 mm and 170 mm) were implanted into the fracture model respectively as hip arthroplasty with 3 mm bone cement layer between prosthesis and femur, and the bone defect was repatched with 5 mm bone cement layer. A three-dimensional finite element model was established with finite element analysis software ABAQUS 6.5. We formulated different material parameters under the stress condition standing with single leg to build the stress distribution map of the femur prosthesis, and took 5 loci of region of stress concentration to calculate the mean value of stress., Results: The stress distribution maps of the short and long stem length prothesises were similar. And there were two areas of stress concentration, including the upper portion and the lower portion close to the joint of the prosthesis stem, and the stress concentration in the junction part was obviously between the lower portion and the upper area of the small trachanter. The stress reached the first concentration area at the junction and then gradually reached the second concentration area at the interior terminal of the stem. While the stress gradually increased along the lateral prosthesis stem, and reached the stress concentration area at the end., Conclusions: The stress distribution maps in the femur prosthesises are similar between hip arthroplasty in the treatment of intertrochanteric fracture of femur and the traditional hip arthroplasty surgery. The peak stress values are higher in the long stem prosthesis in the treatment of intertrochanteric fracture of femur than the short type, while they are under the rupture value of the metal.

Published
2013
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