Objective: to further study and explore the practical clinical significance of prenatal diagnosis of fetal abnormalities by B-ultrasound. Methods: the study was started with 100 parturients who underwent B-ultrasound ...Objective: to further study and explore the practical clinical significance of prenatal diagnosis of fetal abnormalities by B-ultrasound. Methods: the study was started with 100 parturients who underwent B-ultrasound prenatal examination in our hospital from January 2019 to December 2020 as the main experimental target. 50 pregnant women who underwent postpartum B-ultrasound examination were taken as the control group and 50 pregnant women who underwent prenatal B-ultrasound examination were taken as the experimental group. Comparing the abnormal rate of fetus, delivery outcome (natural delivery rate, abortion rate, macrosomia rate, stillbirth rate) and overall satisfaction results of the two groups of pregnant women after delivery to judge the practical significance of prenatal B-ultrasound examination;Results: in the control group, the spontaneous delivery rate, abortion rate, macrosomia rate, stillbirth rate and abnormal delivery rate were 82.0%, 6.0%, 8.0%, 4.0% and 12.0% respectively. Among them, 1 case of limb malformation, 2 cases of polycystic kidney, 2 cases of hydrocephalus, 1 case of spina bifida, the overall satisfaction rate reached 90.0 ℅. In the experimental group, the natural delivery rate, abortion rate, macrosomia rate, stillbirth rate and abnormal delivery rate of pregnant women reached 94.0℅, 2.0℅, 4.0℅, 0.0℅ and 4.0℅ respectively. Among them, 0 cases of limb malformation, 1 case of polycystic kidney, 1 case of hydrocephalus, 0 cases of spina bifida, the overall satisfaction rate reached 96.0℅;Conclusion: the implementation of B-ultrasound prenatal examination has a significant positive effect on pregnant women's delivery outcome, fetal abnormality rate and overall satisfaction. We should gradually expand the field of B-ultrasound prenatal examination, and constantly improve the means of B-ultrasound prenatal examination. It plays an important role in improving the overall satisfaction of pregnant women and the delivery outcome, and reducing the abnormal rate of fetus. It is worthy of popularization and application.展开更多
The popularization and application of information technology have greatly changed the traditional way of social production and life. Among them, the agricultural field is no exception, and the progress of agricultural...The popularization and application of information technology have greatly changed the traditional way of social production and life. Among them, the agricultural field is no exception, and the progress of agricultural science and technology is the most prominent. In this regard, this paper will also take the agricultural technology extension as the breakthrough point, analyze the connotation and significance of agricultural technology extension, and discuss the role of agricultural technology extension in the progress of agricultural science and technology, and list out the practical methods and measures, hoping to bring some reference and inspiration to relevant practitioners, and only serve as a guide for others.展开更多
Background： Tricuspid regurgitation （TR） is frequently associated with severe mitral stenosis （MS）, the importance of significant TR was often neglected. However, TR influences the outcome of patients. The aim of...Background： Tricuspid regurgitation （TR） is frequently associated with severe mitral stenosis （MS）, the importance of significant TR was often neglected. However, TR influences the outcome of patients. The aim of this study was to investigate the efficacy and safety of percutaneous balloon mitral valvuloplasty （PBMV） procedure in rheumatic heart disease patients with mitral valve （MV） stenosis and tricuspid valve regurgitation. Methods： Two hundred and twenty patients were enrolled in this study due to rheumatic heart disease with MS combined with TR. Mitral balloon catheter made in China was used to expand MV. The following parameters were measured before and after PBMV： MV area （MVA）, TR area （TRA）, atrial pressure and diameter, and pulmonary artery pressure （PAP）. The patients were followed for 6 months to 9 years. Results： After PBMV, the MVAs increased significantly （1.7 ± 0.3 cm2 vs. 0.9 ± 0.3 cm2, P 〈 0.01）; TRA significantly decreased （6.3 ± 1.7 cm2 vs. 14.2 ± 6.5 cm2, P 〈 0.01）, right atrial area （RAA） decreased significantly （21,5 ± 4.5 cm2 vs. 25.4 ± 4.3 cm〈 P 〈 0.05）, TRA/RAA （%） decreased significantly （29.3 ± 3.2% vs. 44.2 ± 3.6%, P 〈 0.01）. TR velocity （TRV） and TR continue time （TRT） as well as TRV - TRT decreased significantly （ 183.4± 9.4 cm/s vs. 254.5 ± 10.7 cm/s, P 〈 0.01 ; 185.7 ± 13.6 ms vs. 238.6 ±l 1.3 ms, P 〈 0.01 ; 34.2 ±5.6 cm vs. 60.7 ± 8.5 cm, P 〈 0.01, respectively）, The postoperative left atrial diameter （LAD） significantly reduced （41.3 ± 6.2 mm vs. 49.8± 6.8 mm, P 〈 0.01） and the postoperative right atrial diameter （RAD） significantly reduced （28.7 ±5.6 mm vs. 46.5 ± 6.3 mm, P 〈 0.01 ）; the postoperative left atrium pressure significantly reduced （ 15.6 ± 6.1 mmHg vs. 26.5 ± 6.6 mmHg, P 〈 0.01 ）, the postoperative right atrial pressure decreased significantly （ 13.2 ±2.4 mmHg vs. 18.5 ±4.3 mmHg, P 〈 0.01 ）. The pulmonary arterial pressure decreased significantly after PBMV （48.2 ± 10.3 mmHg vs. 60.6 ±15.5 mmHg, P 〈 0.01）. The symptom of chest tightness and short of breath obviously alleviated. All cases followed-up for 6 months to 9 years （average 75± 32 months）, 2 patients with severe regurgitation died （1 case of massive cerebral infarction, and 1 case of heart failure after 6 years and 8 years, respectively）, 2 cases lost access. At the end of follow-up, MVA has been reduced compared with the postoperative （1.4 ± 0.4 cm2 vs. 1.7 ±0.3 cm2, P 〈 0.05）; LAD slightly increased compared with the postoperative （45.2 ± 5.7 mm vs. 41.4 ± 6.3 mm, P 〈 0.05）, RAD slightly also increased compared with the postoperative （36.1 ± 6.3 mm vs. 28.6 ± 5.5 mm, P 〈 0.05）, but did not recover to the preoperative level. TRA slightly increased compared with the postoperative, but the difference was not statistically significant （P 〉 0.05）. The PAP and left ventricular ejection fraction appeared no statistical difference compared with the postoperative （P 〉 0.05）, the remaining patients without serious complications. Conclusions： PBMV is a safe and effective procedure for MS combined with TR in patients of rheumatic heart disease. It can alleviate the symptoms and reduce the size of TR. It can also improve the quality-of-life and prognosis. Its recent and mid-term efficacy is certain. While its long-term efficacy remains to be observed.展开更多
文摘Objective: to further study and explore the practical clinical significance of prenatal diagnosis of fetal abnormalities by B-ultrasound. Methods: the study was started with 100 parturients who underwent B-ultrasound prenatal examination in our hospital from January 2019 to December 2020 as the main experimental target. 50 pregnant women who underwent postpartum B-ultrasound examination were taken as the control group and 50 pregnant women who underwent prenatal B-ultrasound examination were taken as the experimental group. Comparing the abnormal rate of fetus, delivery outcome (natural delivery rate, abortion rate, macrosomia rate, stillbirth rate) and overall satisfaction results of the two groups of pregnant women after delivery to judge the practical significance of prenatal B-ultrasound examination;Results: in the control group, the spontaneous delivery rate, abortion rate, macrosomia rate, stillbirth rate and abnormal delivery rate were 82.0%, 6.0%, 8.0%, 4.0% and 12.0% respectively. Among them, 1 case of limb malformation, 2 cases of polycystic kidney, 2 cases of hydrocephalus, 1 case of spina bifida, the overall satisfaction rate reached 90.0 ℅. In the experimental group, the natural delivery rate, abortion rate, macrosomia rate, stillbirth rate and abnormal delivery rate of pregnant women reached 94.0℅, 2.0℅, 4.0℅, 0.0℅ and 4.0℅ respectively. Among them, 0 cases of limb malformation, 1 case of polycystic kidney, 1 case of hydrocephalus, 0 cases of spina bifida, the overall satisfaction rate reached 96.0℅;Conclusion: the implementation of B-ultrasound prenatal examination has a significant positive effect on pregnant women's delivery outcome, fetal abnormality rate and overall satisfaction. We should gradually expand the field of B-ultrasound prenatal examination, and constantly improve the means of B-ultrasound prenatal examination. It plays an important role in improving the overall satisfaction of pregnant women and the delivery outcome, and reducing the abnormal rate of fetus. It is worthy of popularization and application.
文摘The popularization and application of information technology have greatly changed the traditional way of social production and life. Among them, the agricultural field is no exception, and the progress of agricultural science and technology is the most prominent. In this regard, this paper will also take the agricultural technology extension as the breakthrough point, analyze the connotation and significance of agricultural technology extension, and discuss the role of agricultural technology extension in the progress of agricultural science and technology, and list out the practical methods and measures, hoping to bring some reference and inspiration to relevant practitioners, and only serve as a guide for others.
文摘Background： Tricuspid regurgitation （TR） is frequently associated with severe mitral stenosis （MS）, the importance of significant TR was often neglected. However, TR influences the outcome of patients. The aim of this study was to investigate the efficacy and safety of percutaneous balloon mitral valvuloplasty （PBMV） procedure in rheumatic heart disease patients with mitral valve （MV） stenosis and tricuspid valve regurgitation. Methods： Two hundred and twenty patients were enrolled in this study due to rheumatic heart disease with MS combined with TR. Mitral balloon catheter made in China was used to expand MV. The following parameters were measured before and after PBMV： MV area （MVA）, TR area （TRA）, atrial pressure and diameter, and pulmonary artery pressure （PAP）. The patients were followed for 6 months to 9 years. Results： After PBMV, the MVAs increased significantly （1.7 ± 0.3 cm2 vs. 0.9 ± 0.3 cm2, P 〈 0.01）; TRA significantly decreased （6.3 ± 1.7 cm2 vs. 14.2 ± 6.5 cm2, P 〈 0.01）, right atrial area （RAA） decreased significantly （21,5 ± 4.5 cm2 vs. 25.4 ± 4.3 cm〈 P 〈 0.05）, TRA/RAA （%） decreased significantly （29.3 ± 3.2% vs. 44.2 ± 3.6%, P 〈 0.01）. TR velocity （TRV） and TR continue time （TRT） as well as TRV - TRT decreased significantly （ 183.4± 9.4 cm/s vs. 254.5 ± 10.7 cm/s, P 〈 0.01 ; 185.7 ± 13.6 ms vs. 238.6 ±l 1.3 ms, P 〈 0.01 ; 34.2 ±5.6 cm vs. 60.7 ± 8.5 cm, P 〈 0.01, respectively）, The postoperative left atrial diameter （LAD） significantly reduced （41.3 ± 6.2 mm vs. 49.8± 6.8 mm, P 〈 0.01） and the postoperative right atrial diameter （RAD） significantly reduced （28.7 ±5.6 mm vs. 46.5 ± 6.3 mm, P 〈 0.01 ）; the postoperative left atrium pressure significantly reduced （ 15.6 ± 6.1 mmHg vs. 26.5 ± 6.6 mmHg, P 〈 0.01 ）, the postoperative right atrial pressure decreased significantly （ 13.2 ±2.4 mmHg vs. 18.5 ±4.3 mmHg, P 〈 0.01 ）. The pulmonary arterial pressure decreased significantly after PBMV （48.2 ± 10.3 mmHg vs. 60.6 ±15.5 mmHg, P 〈 0.01）. The symptom of chest tightness and short of breath obviously alleviated. All cases followed-up for 6 months to 9 years （average 75± 32 months）, 2 patients with severe regurgitation died （1 case of massive cerebral infarction, and 1 case of heart failure after 6 years and 8 years, respectively）, 2 cases lost access. At the end of follow-up, MVA has been reduced compared with the postoperative （1.4 ± 0.4 cm2 vs. 1.7 ±0.3 cm2, P 〈 0.05）; LAD slightly increased compared with the postoperative （45.2 ± 5.7 mm vs. 41.4 ± 6.3 mm, P 〈 0.05）, RAD slightly also increased compared with the postoperative （36.1 ± 6.3 mm vs. 28.6 ± 5.5 mm, P 〈 0.05）, but did not recover to the preoperative level. TRA slightly increased compared with the postoperative, but the difference was not statistically significant （P 〉 0.05）. The PAP and left ventricular ejection fraction appeared no statistical difference compared with the postoperative （P 〉 0.05）, the remaining patients without serious complications. Conclusions： PBMV is a safe and effective procedure for MS combined with TR in patients of rheumatic heart disease. It can alleviate the symptoms and reduce the size of TR. It can also improve the quality-of-life and prognosis. Its recent and mid-term efficacy is certain. While its long-term efficacy remains to be observed.
