Objectives: This study focused on evaluating the value of transvaginal 3D ultrasound for the diagnosis and prognostic assessment of post-cesarean section uterine diverticulum. Materials and Methods: We retrospectively...Objectives: This study focused on evaluating the value of transvaginal 3D ultrasound for the diagnosis and prognostic assessment of post-cesarean section uterine diverticulum. Materials and Methods: We retrospectively analyzed the data from 32 patients with post-cesarean section uterine diverticulum over three recent years. In all patients, transvaginal 3D ultrasound was used to measure the size of the uterine diverticulum and the thickness of the lower uterine segment (LUS) and myometrium. Patients with a LUS with a myometrial thickness under 4 mm underwent resection and repair surgery;those with a LUS with a myometrial thickness over 4 mm underwent hysteroscopic resection. The postoperative sonograms were compared with preoperative images to evaluate the efficacy of various treatments. Results: The mean length, width and depth of the uterine diverticula were 18.30 ± 2.80 mm, 9.14 ± 3.20 mm and 11.49 ± 2.71 mm, respectively. The average LUS myometrial thickness was 3.40 ± 0.80 mm (with a range of 1.6 mm - 6.3 mm). After surgery, two patients’ sonograms still showed diverticula at the post-cesarean section scar, measuring 6 mm × 7 mm × 6 mm and 6 mm × 8 mm × 4 mm. There were significant differences in the size of uterine diverticula between preoperative and postoperative sonograms (P < 0.05) and the effective rate of surgery was 93.75% (30/32). Conclusions: Transvaginal 3D ultrasound is an accurate method for detecting post-cesarean section uterine diverticulum and is helpful for assessing surgical options and prognosis. The LUS myometrial thickness, which is considered as an optional index of post-cesarean section uterine diverticulum, should be measured routinely.展开更多
The production of breast milk is physiologically influenced by prolactin hormone and breast milk is influenced by oxytocin hormone. Oxytocin massage can increase the oxytocin hormone. The increase in the oxytocin horm...The production of breast milk is physiologically influenced by prolactin hormone and breast milk is influenced by oxytocin hormone. Oxytocin massage can increase the oxytocin hormone. The increase in the oxytocin hormone can expedite the time of colostrum. The use of drugs in the post section cesarean (SC) will inhibit the formation of breast milk production. Oxytocin massage is one of the efforts to expedite the release of colostrum. Purpose: To analyze the implementation of oxytocin massage in accelerating the release of colostrum in post-SC and the effect of oxytocin massage, breast care and the frequency of breastfeeding simultaneously to accelerate the release of colostrum. Method: The design used quasi-experiment. The population were post-SC with a sample of 60 people (30 post-SC were treated with oxytocin massage and 30 post-SC were not treated). Both groups were interviewed and observed in breast care, the frequency of breastfeeding and the time of first colostrum discharge. Result: Analysis used independent T-test and double linear regression test with α = 0.05. The results showed significantly that expedite time of colostrum in the post SC group with oxytocin massage occurred 23.04 hours faster than the controlled group who were not treated with oxytocin massage and post SC who were given oxytocin massage accompanied by breastfeeding their babies as often as possible to be faster 2.6 hours when the colostrum was released with α value < 0.05. Conclusion: Massage oxytocin speeds up the release of colostrum in the post SC.展开更多
The plastic post-buckling of a simply supported column with a solid rectangularcross-section is analysed by a new approach. High order terms in the asymptotic post-buckling expansions are carried out. In some aspect...The plastic post-buckling of a simply supported column with a solid rectangularcross-section is analysed by a new approach. High order terms in the asymptotic post-buckling expansions are carried out. In some aspects, the method proposed in thispaper is similar io Hutchinson's. However, the computation is simple since theintroduction is avoided of stretched coordinates. The method can be used to analyseinitial post-bifurcation of plates and shells in the plastic range.展开更多
针对既有电气化铁路分段、分相式供电结构导致的列车过分相速度损失、再生制动能量利用率低等问题,提出一种分区所多功能潮流控制系统(multi-functional power flow control system for section post,SP-MPFC)及其控制策略,旨在充分利...针对既有电气化铁路分段、分相式供电结构导致的列车过分相速度损失、再生制动能量利用率低等问题,提出一种分区所多功能潮流控制系统(multi-functional power flow control system for section post,SP-MPFC)及其控制策略,旨在充分利用变流设备容量,兼顾实现分区所处列车柔性过分相、牵引网末端电压稳定与再生制动能量转移利用。首先,介绍分区所多功能潮流控制系统的拓扑结构。然后,详细分析了柔性过分相、牵引网末端电压稳定与再生制动能量转移利用3种功能的实现原理。在此基础上,提出分区所多功能潮流控制系统分层控制策略,其中能量管理层计算系统内各个变流器的有功/无功输出功率参考值,设备层协同控制多个变流器快速跟踪各自功率参考值。最后,通过仿真验证所提系统结构与控制策略的有效性。展开更多
Introduction: A caesarean section (CS) is one of the most frequently performed obstetric surgeries in the world and its use has increased dramatically in recent years. The number of caesarean section cases worldwide h...Introduction: A caesarean section (CS) is one of the most frequently performed obstetric surgeries in the world and its use has increased dramatically in recent years. The number of caesarean section cases worldwide has been increasing each year, and the World Health Organization (WHO) reported an excess of 10% - 15% of CS procedures for all births. However, some women experience surgical site infections (SSIs) after undergoing CS delivery. This study investigated the prescribing patterns of antibiotics in CS deliveries and the prevalence of SSIs at two tertiary hospitals in Lusaka, Zambia. Materials and Methods: A retrospective cross-sectional study was conducted from January 2020 to December 2020 at the Women and Newborn University Teaching Hospital (UTH) and the Levy Mwanawasa University Teaching Hospital, in Lusaka, Zambia. Results: Of a total of 838 women who delivered via CS, more than half were aged between 21 and 25 years (n = 461, 55.0%), 56.3% were from low-cost residential areas, and 57% had emergency CS delivery. The prevalence of SSIs was 6.0%, with the level of education (OR 0.377, 95% CI 0.150 - 0.946), type of caesarean section (OR 6.253, 95% CI 2.833 - 13.803), and oral antibiotics post-caesarean (OR 0.218, 95% CI 0.049 - 0.963). The duration of IV antibiotic treatment significantly predicted SSI (p Conclusion: This study found that the third-generation cephalosporin (cefotaxime) and triple combination therapy (benzylpenicillin, gentamicin, and metronidazole) were the most frequently prescribed antibiotics before and after CS. The level of education, type of CS, oral antibiotics post-CS, facility, and duration of administering IV antibiotics were all predictors of SSIs.展开更多
目的探索床旁超声测量胃窦横截面积(CSA)与乙肝后肝硬化患者胃液量的相关性,为临床决策的制定提供参考。方法采用便利抽样法,选取行胃镜检查的非乙肝后肝硬化及乙肝后肝硬化患者各100例(第一部分患者)、行胃镜检查的乙肝后肝硬化患者200...目的探索床旁超声测量胃窦横截面积(CSA)与乙肝后肝硬化患者胃液量的相关性,为临床决策的制定提供参考。方法采用便利抽样法,选取行胃镜检查的非乙肝后肝硬化及乙肝后肝硬化患者各100例(第一部分患者)、行胃镜检查的乙肝后肝硬化患者200例(第二部分患者)为研究对象。采用床旁超声测量第一部分患者CSA并记录;将第二部分患者随机分成5组,胃镜检查结束后,利用胃镜将胃内液体和气体最大程度负压吸引,分别将0 m L、50 m L、100 m L、150 m L、200 m L生理盐水通过胃镜活检孔道快速注射进患者胃部,2分钟内嘱患者取仰卧位,利用床旁超声设备测量并计算CSA。结果仰卧位下,空腹非乙肝后肝硬化患者CSA为2.31~3.08 cm^(2),平均(3.07±0.28)cm^(2),空腹乙肝后肝硬化患者CSA为2.60~7.26 cm^(2),平均(4.84±0.77)cm^(2),二者平均CSA比较,差异具有统计学意义(P<0.05)。第二部分患者胃内注入不同容积的生理盐水后,其注入生理盐水量与仰卧位下患者CSA呈正相关(rs=0.752,P<0.001)。结论床旁超声测量仰卧位下空腹乙肝后肝硬化患者CSA明显大于非乙肝后肝硬化人群。床旁超声测量仰卧位下乙肝后肝硬化患者CSA可以反映胃内液体量,在评估乙肝后肝硬化患者围麻醉期误吸风险上有一定的临床价值,应在临床麻醉工作中广泛推广。展开更多
The equivalent filter modeling of a rectangular dielectric post in a rectangular waveguide is obtained through the variational expression of input impedance. The reflection coefficient expressed in components of netwo...The equivalent filter modeling of a rectangular dielectric post in a rectangular waveguide is obtained through the variational expression of input impedance. The reflection coefficient expressed in components of network is in good agreement with the results given by K. Siakavara, et al. (1991), The method can be applied to design filter.展开更多
文摘Objectives: This study focused on evaluating the value of transvaginal 3D ultrasound for the diagnosis and prognostic assessment of post-cesarean section uterine diverticulum. Materials and Methods: We retrospectively analyzed the data from 32 patients with post-cesarean section uterine diverticulum over three recent years. In all patients, transvaginal 3D ultrasound was used to measure the size of the uterine diverticulum and the thickness of the lower uterine segment (LUS) and myometrium. Patients with a LUS with a myometrial thickness under 4 mm underwent resection and repair surgery;those with a LUS with a myometrial thickness over 4 mm underwent hysteroscopic resection. The postoperative sonograms were compared with preoperative images to evaluate the efficacy of various treatments. Results: The mean length, width and depth of the uterine diverticula were 18.30 ± 2.80 mm, 9.14 ± 3.20 mm and 11.49 ± 2.71 mm, respectively. The average LUS myometrial thickness was 3.40 ± 0.80 mm (with a range of 1.6 mm - 6.3 mm). After surgery, two patients’ sonograms still showed diverticula at the post-cesarean section scar, measuring 6 mm × 7 mm × 6 mm and 6 mm × 8 mm × 4 mm. There were significant differences in the size of uterine diverticula between preoperative and postoperative sonograms (P < 0.05) and the effective rate of surgery was 93.75% (30/32). Conclusions: Transvaginal 3D ultrasound is an accurate method for detecting post-cesarean section uterine diverticulum and is helpful for assessing surgical options and prognosis. The LUS myometrial thickness, which is considered as an optional index of post-cesarean section uterine diverticulum, should be measured routinely.
文摘The production of breast milk is physiologically influenced by prolactin hormone and breast milk is influenced by oxytocin hormone. Oxytocin massage can increase the oxytocin hormone. The increase in the oxytocin hormone can expedite the time of colostrum. The use of drugs in the post section cesarean (SC) will inhibit the formation of breast milk production. Oxytocin massage is one of the efforts to expedite the release of colostrum. Purpose: To analyze the implementation of oxytocin massage in accelerating the release of colostrum in post-SC and the effect of oxytocin massage, breast care and the frequency of breastfeeding simultaneously to accelerate the release of colostrum. Method: The design used quasi-experiment. The population were post-SC with a sample of 60 people (30 post-SC were treated with oxytocin massage and 30 post-SC were not treated). Both groups were interviewed and observed in breast care, the frequency of breastfeeding and the time of first colostrum discharge. Result: Analysis used independent T-test and double linear regression test with α = 0.05. The results showed significantly that expedite time of colostrum in the post SC group with oxytocin massage occurred 23.04 hours faster than the controlled group who were not treated with oxytocin massage and post SC who were given oxytocin massage accompanied by breastfeeding their babies as often as possible to be faster 2.6 hours when the colostrum was released with α value < 0.05. Conclusion: Massage oxytocin speeds up the release of colostrum in the post SC.
文摘The plastic post-buckling of a simply supported column with a solid rectangularcross-section is analysed by a new approach. High order terms in the asymptotic post-buckling expansions are carried out. In some aspects, the method proposed in thispaper is similar io Hutchinson's. However, the computation is simple since theintroduction is avoided of stretched coordinates. The method can be used to analyseinitial post-bifurcation of plates and shells in the plastic range.
文摘针对既有电气化铁路分段、分相式供电结构导致的列车过分相速度损失、再生制动能量利用率低等问题,提出一种分区所多功能潮流控制系统(multi-functional power flow control system for section post,SP-MPFC)及其控制策略,旨在充分利用变流设备容量,兼顾实现分区所处列车柔性过分相、牵引网末端电压稳定与再生制动能量转移利用。首先,介绍分区所多功能潮流控制系统的拓扑结构。然后,详细分析了柔性过分相、牵引网末端电压稳定与再生制动能量转移利用3种功能的实现原理。在此基础上,提出分区所多功能潮流控制系统分层控制策略,其中能量管理层计算系统内各个变流器的有功/无功输出功率参考值,设备层协同控制多个变流器快速跟踪各自功率参考值。最后,通过仿真验证所提系统结构与控制策略的有效性。
文摘Introduction: A caesarean section (CS) is one of the most frequently performed obstetric surgeries in the world and its use has increased dramatically in recent years. The number of caesarean section cases worldwide has been increasing each year, and the World Health Organization (WHO) reported an excess of 10% - 15% of CS procedures for all births. However, some women experience surgical site infections (SSIs) after undergoing CS delivery. This study investigated the prescribing patterns of antibiotics in CS deliveries and the prevalence of SSIs at two tertiary hospitals in Lusaka, Zambia. Materials and Methods: A retrospective cross-sectional study was conducted from January 2020 to December 2020 at the Women and Newborn University Teaching Hospital (UTH) and the Levy Mwanawasa University Teaching Hospital, in Lusaka, Zambia. Results: Of a total of 838 women who delivered via CS, more than half were aged between 21 and 25 years (n = 461, 55.0%), 56.3% were from low-cost residential areas, and 57% had emergency CS delivery. The prevalence of SSIs was 6.0%, with the level of education (OR 0.377, 95% CI 0.150 - 0.946), type of caesarean section (OR 6.253, 95% CI 2.833 - 13.803), and oral antibiotics post-caesarean (OR 0.218, 95% CI 0.049 - 0.963). The duration of IV antibiotic treatment significantly predicted SSI (p Conclusion: This study found that the third-generation cephalosporin (cefotaxime) and triple combination therapy (benzylpenicillin, gentamicin, and metronidazole) were the most frequently prescribed antibiotics before and after CS. The level of education, type of CS, oral antibiotics post-CS, facility, and duration of administering IV antibiotics were all predictors of SSIs.
文摘目的探索床旁超声测量胃窦横截面积(CSA)与乙肝后肝硬化患者胃液量的相关性,为临床决策的制定提供参考。方法采用便利抽样法,选取行胃镜检查的非乙肝后肝硬化及乙肝后肝硬化患者各100例(第一部分患者)、行胃镜检查的乙肝后肝硬化患者200例(第二部分患者)为研究对象。采用床旁超声测量第一部分患者CSA并记录;将第二部分患者随机分成5组,胃镜检查结束后,利用胃镜将胃内液体和气体最大程度负压吸引,分别将0 m L、50 m L、100 m L、150 m L、200 m L生理盐水通过胃镜活检孔道快速注射进患者胃部,2分钟内嘱患者取仰卧位,利用床旁超声设备测量并计算CSA。结果仰卧位下,空腹非乙肝后肝硬化患者CSA为2.31~3.08 cm^(2),平均(3.07±0.28)cm^(2),空腹乙肝后肝硬化患者CSA为2.60~7.26 cm^(2),平均(4.84±0.77)cm^(2),二者平均CSA比较,差异具有统计学意义(P<0.05)。第二部分患者胃内注入不同容积的生理盐水后,其注入生理盐水量与仰卧位下患者CSA呈正相关(rs=0.752,P<0.001)。结论床旁超声测量仰卧位下空腹乙肝后肝硬化患者CSA明显大于非乙肝后肝硬化人群。床旁超声测量仰卧位下乙肝后肝硬化患者CSA可以反映胃内液体量,在评估乙肝后肝硬化患者围麻醉期误吸风险上有一定的临床价值,应在临床麻醉工作中广泛推广。
文摘The equivalent filter modeling of a rectangular dielectric post in a rectangular waveguide is obtained through the variational expression of input impedance. The reflection coefficient expressed in components of network is in good agreement with the results given by K. Siakavara, et al. (1991), The method can be applied to design filter.
