Abstract: Objective To observe the physical characteristics of decellularized porcine pulmonary valved conduits crosslinked by carbodiimide (EDC). Methods [WTBZ]Twenty porcine pulmonary valved arteries were mobilized on relative asepsis condition. They were cut longitudinally into three samples at the junction position of pulmonary valve (every sample was comprised of a part of the pulmonary conduit wall and the corresponding valve). The samples were randomly divided into three groups by lotdrawing method. Group A was the control group which was made up of the fresh porcine arterial valved conduit samples without any other treatments. Group B was comprised of porcine pulmonary samples decellularized by trypsindetergent digestion. Group Cincluded the decellularized porcine pulmonary samples crosslinked by EDC. We observed the water content, thickness, tensile strength, and shrinkage temperature of all the samples, based on which the physical characeteristics of these samples were analyzed. Results [WTBZ]Complete cellfree-pulmonary conduit matrix was achieved by trypsindetergent digestion. Compared with group A, in group B, the water content of pulmonary wall was significantly higher (P=0.000), while the water content of pulmonary valve was not significantly different; the thickness of pulmonary wall and valve (P=0.000，0.000) and tensile strength of pulmonary wall and valve (Plt;0.01） was significantly lower, while shrinkage temperature was not significantly different. Compared with group B, in group C, the water content of pulmonary wall was significantly lower (P=0.000), while the water content of pulmonary valve, and the thickness of pulmonary wall and valve were not significantly different; the tensile strength of pulmonary wall (Plt;0.01) and valve (P=0.000), and the shrinkage temperature of them (P=0.000, 0.000) were significantly higher. Compared with group A, in group C, the water content of pulmonary wall and valve, and the tensile strength of them were not statistically different, while the thickness of pulmonary wall and valve was significantly lower (P=0.000, 0.000), and the shrinkage temperature of them was significantly higher (P=0.000, 0.000). Conclusion [WTBZ]EDC crosslinking method is available for treating decellularized porcine pulmonary valved conduits in order to enhance its tensile strength, and decrease water content of pulmonary wall.
Objective To investigate the diagnosis and treatment methods of primary cardiac malignant tumors，so as to improve its’ level of diagnosis and treatment. Methods From April 2004 to June 2008, 19 patients with primary cardiac malignant tumors were diagnosed and treated in the department of cardiac surgery in this hospital. Male 11, Female 8.Age of the patients was 40.7±12.1 years(17-64 years). Preoperative diagnosis were occupying lesion in cardiac, malignant tumors were possible. Complete resections of malignant tumors were achieved by cardiopulmonary bypass (CPB) in 3 cases, and partially resected in 1 case, heart transplantation was performed in 1 case, only biopsies were performed in 5 cases. 9 cases (47.4%) lost the chances of operative treatments. Results There were no operative and hospitalstay deaths. Hospital stay was 10±7 d（9-15 d）, all patients were safely discharged from hospital. Two cases suffered from postoperative pericardial effusions，and high temperature happened in 1 patient, these 3 cases recovered by puncture and symptomatic treatment. The pathological diagnosis: leiomyosarcoma in 1case, malignant mesothelioma in 1 case and hemangioendothelial sarcoma in 8 cases. 14 cases (73.7%) were followed up from 1 to 38 months, 14 cases died of tumor recurrence or metastasis, the mortality was 73.7%, 5 cases (26.3%) were failed to be followed up. Conclusion The prognosis of patient with primary cardiac malignant tumor is still poor. Earlier diagnosis and complete surgical removal of the tumor as soon as possible may improve the patients’qualities of lives.
Objective To identify the most consistent and replicable characteristics of altered spontaneous brain activity in mesial temporal lobe epilepsy patients with unilateral hippocampal sclerosis (MTLE-HS). Methods A systematic literature search was performed in PubMed, Embase, The Cochrane Library, China National Knowledge Infrastructure, Wanfang, and CQVIP databases, to identify eligible whole-brain resting state functional magnetic resonance imaging studies that had measured differences in amplitude of low-frequency fluctuations or fractional amplitude of low-frequency fluctuations between patients with MTLE-HS and healthy controls from January 2000 to January 2019. After literature screening and data extraction, Anisotropic Effect-Size Signed Differential Mapping software was used for voxel based pooled meta-analysis. Results Nine datasets from six studies were finally included, which contained 207 MTLE-HS patients and 239 healthy controls. The results demonstrated that, compared with the healthy controls, the MTLE-HS patients showed increased spontaneous brain activity in right hippocampus and parahippocampal gyrus, right superior temporal gyrus, left cingulate gyrus, right fusiform gyrus, and right inferior temporal gyrus; while decreased spontaneous brain activity in left superior frontal gyrus, right angular gyrus, right middle frontal gyrus, left inferior parietal lobule, left precuneus, and right cerebellum (P<0.005, cluster extent≥10). Conclusion The current meta-analysis demonstrates that patients with MTLE-HS show increased spontaneous brain activity in lateral and mesial temporal regions and decreased spontaneous brain activity in default mode network, which preliminarily clarifies the characteristics of altered spontaneous brain activity in patients with MTLE-HS.
ObjectiveTo summarize and analyze the clinical characteristics of patients with acute diffuse lung changes and respiratory failure.MethodsThe clinical data of patients in the Department of Critical Care Medicine, Dazhou Central Hospital between January 2016 and December 2018 were retrospectively collected, whose main clinical manifestation was acute respiratory distress syndrome with acute onset (<3 weeks) and main imaging manifestation was diffuse changes in both lungs. The clinical characteristics of patients were summarized, and the causes of the disease were explored.ResultsA total of 65 patients with acute diffuse lung changes and respiratory failure were enrolled, including 42 males (64.6%) and 23 females (35.4%). The average age was (57.1±18.4) years, the average time from onset to treatment was (7.5±5.9) d, and the average length of stay in the intensive care unit was (8.9±4.1) d. A total of 23 cases died, with a case-fatality rate of 35.4%. Among the 65 patients, there were 50 case (76.9%) of infectious diseases, including 36 cases of bacterial infections (including 4 cases of tuberculosis), 8 cases of viral infections (all were H1N1 infections), and 6 cases of fungal infections (including 1 case of pneumocystis infection); and there were 15 cases (23.1%) of non-infectious diseases, including 4 cases of acute left heart failure, 2 cases of interstitial pneumonia, 2 cases of vasculitis, 1 case of myositis dermatomyositis, 1 case of aspiration pneumonia, 1 case of acute pulmonary embolism, 1 case of acute drug lung injury, 1 case of neurogenic pulmonary edema, 1 case of drowning, and 1 case of unknown origin.ConclusionsInfectious diseases are the main cause of acute diffuse lung changes and respiratory failure, while among non-infectious diseases, acute heart failure and immune system diseases are common causes.
【Abstract】ObjectiveTo investigate the efficacy of radiofrequency (RF) ablation comparing with percutaneous ethanol injection (PEI) in the treatment of postoperative recurrent hepatocellular carcinoma. MethodsOne hundred and thirtyseven patients with recurrent hepatocellular carcinoma excluding those with extrahepatic metastasis or Child C liver function were analyzed retrospectively. Of these patients, 74 cases with 86 lesions underwent RF therapy, while the other 63 cases with 75 lesions treated with PEI therapy. In RF group, the average size of lesions was 2.05 cm in diameter including 9 lesions were more than 3 cm in diameter (the maximum size of the lesions was 4 cm in diameter). In PEI group, all lesions were less than 3 cm in diameter, averagely 2.03 cm. Blood routine, liver function, AFP level and Doppler ultrasound were observed before and after therapy 1-year, 2-year, 3-year survival rates were calculated in two groups as well. Results①There was no serious complications in two groups. ②Complete tumor necrosis was 93.0%(80/86) in RF group and 81.3%(61/75) in PEI group. In RF group, complete tumor necrosis rate for lesions less than 3 cm in diameter was 96.1%(74/77), while that was only 66.7%(6/9) for lesions greater than 3 cm in diameter. ③The 1-year, 2-year, 3-year survival rates were 74.3%(55/74), 62.2%(46/74) and 54.8% (17/31) in RF group as well as 68.3%(43/63), 57.1%(36/63) and 45.0%(9/20) in PEI group， respectively. ④The average treatment needed to achieve tumor ablation were 1.3 for RF group, and 2.5 for PEI group，respectively. ConclusionRF is an efficient treatment for recurrent hepatocellular carcinoma.