卡贝缩宫素联合Bakri球囊压迫对宫缩乏力性产后出血患者卵巢功能和凝血功能的影响

目的:探讨卡贝缩宫素、Bakri球囊压迫联合治疗对宫缩乏力性产后出血患者卵巢功能以及凝血功能的影响。方法:选取2017年2月-2021年3月我院接诊治疗的86例宫缩乏力性产后出血患者,以随机数字表法分为对照组、研究组,分别给予Bakri球囊压迫单一治疗及卡贝缩宫素、Bakri球囊压迫联合治疗。检测对比患者的卵巢功能指标包括LH、FSH、E2水平,记录两组患者舒张压(DBP)、收缩压(SBP)、心率、出血量变化和止血起效时间,测定纤维蛋白原(FIB)、凝血酶原时间(PT)和活化部分凝血活酶时间(APTT),对比两组不良反应发生情况。结果:两组患者DBP、SBP及心率变化波动较小,治疗后数据显示差异无统计学意义(P>0.05);两组患者治疗后2 h、24 h出血量减少,且研究组治疗后2 h、24 h出血量及止血起效时间短于对照组(P<0.05);治疗后3 d,两组患者FIB水平降低,PT、APPT水平升高,且研究组FIB水平低于对照组,PT、APPT水平高于对照组(P<0.05);治疗后3 d,两组患者血清E₂水平升高,FSH、LH水平降低,且研究组血清E₂、FSH、LH水平优于对照组(P<0.05);研究组不良反应发生率(8.89%)高于对照组(4.88%),但是未见显著性差异(P>0.05)。结论:卡贝缩宫素联合Bakri球囊压迫可改善宫缩乏力性产后出血的卵巢功能及凝血功能,提升产后止血效果,增强患者子宫收缩能力。     

17-AAG 对颈动脉球囊损伤大鼠血管平滑肌细胞增殖影响的实验研究

目的：研究17- 丙烯胺-17 去甲氧格尔德霉素（17-Allylamino-17-emethoxy-geldanamycin, 17-AAG）对球囊损伤后大鼠颈动脉 血管平滑肌细胞增殖的影响。方法：选取雄性Sprague-Dawley（SD）大鼠30 只,随机数字法分为球囊损伤（Balloon injury,BI）组10 只、球囊损伤+17-AAG 低剂量治疗（Balloon injury+Low dose AGG,BIL）组10 只、球囊损伤+17-AAG 高剂量治疗（Balloon injury+High dose AGG,BIH）组10只。建立大鼠颈动脉球囊损伤模型,病理学评估血管内膜增生情况。各组于球囊损伤28 天后取 材,将损伤区域的血管段取材固定,苏木精- 伊红染色（HE）观察血管并测量内膜面积（Intimal Area, IA）、中膜面积（Membrane Area,MA）,计算内膜/中膜面积比（IA/MA）,以评估内膜增生情况;同时,利用免疫荧光染色（Immunofluorescence staining, IFS）观 察增殖细胞核抗原（Proliferating cell nuclear antigen, PCNA）表达的情况,以评价血管平滑肌细胞的增殖情况。结果：大鼠颈动脉球 囊损伤模型成功建立。HE 染色后计算血管I/M比值,结果表明BIL组与BI组血管I/M 比值无统计学差异（P>0.05）,BIH 与BI组 血管I/M比值有统计学差异（P<0.05）。IFS结果表明,BIL组血管壁PCNA 表达较BI组略有降低,但无统计学意义（P>0.05）。BIH 组血管壁PCNA表达较BI组明显减低,有显著统计学差异（P<0.05）。结论：一定浓度的17-AAG可明显的抑制球囊损伤后颈动脉 血管平滑肌细胞增殖;17-AAG可以成为球囊损伤后大鼠血管平滑肌细胞增殖的抑制剂。     

Protective effects of indomethacin and dexamethasone in a goat model with intrauterine balloon aortic valvuloplasty

Background

Intrauterine balloon aortic valvuloplasty (IUBAV) has been used for critical aortic stenosis. However, it is necessary to determine the fetal impairments such as preterm birth after this approach and to find a way to prevent or reduce them.

Methods

In the present study, we evaluated the therapeutic value of indomethacin (IDM) and dexamethasone (DXS) on reducing the preterm birth rate in experimental goats after IUBAV.

Results

Our results indicated that the administration of IDM/DXS significantly reduced the rate of premature birth. IDM/DXS treatment led to preservation of myocardial ultrastructure with less damage, and amelioration of the fetal and placental circulation. Furthermore, we found that norepinephrine (NE) level was positively associated with the degree of myocardial damage. IDM/DXS administration led to a significant decrease of operation-induced increase of NE levels, which may be associated with the protective effects of IDM/DXS. Lastly, we found that the administration of IDM/DXS did not induce the risk of ductus arteriosus closure or slow down fetal growth.

Conclusions

Our results indicate that IDM/DXS promotes a better gestational outcome at least partially by reducing stress response during and after the operation of IUBAV in the goat model. IDM/DXS may be a useful application in human patients during IUBAV intervention.     

YC-1-mediated vascular protection through inhibition of smooth muscle cell proliferation and platelet function

YC-1, a synthetic benzyl indazole derivative, is capable of stimulating endogenous vessel wall cyclic guanosine monophosphate (cGMP) production and attenuating the remodeling response to experimental arterial angioplasty. In an effort to investigate the mechanisms of this YC-1-mediated vasoprotection, we examined the influence of soluble YC-1 or YC-1 incorporated in a polyethylene glycol (PEG) hydrogel on cultured rat vascular smooth muscle cell (SMC) cGMP synthesis, SMC proliferation, and platelet function. Results demonstrate that soluble YC-1 stimulated SMC cGMP production in a dose-dependent fashion, while both soluble and hydrogel-released YC-1 inhibited vascular SMC proliferation in a dose-dependent fashion without effects on cell viability. Platelet aggregation and adherence to collagen were both significantly inhibited in a dose-dependent fashion by soluble and hydrogel-released YC-1. Arterial neointima formation following experimental balloon injury was significantly attenuated by perivascular hydrogel-released YC-1. These results suggest that YC-1 is a potent, physiologically active agent with major anti-proliferative and anti-platelet properties that may provide protection against vascular injury through cGMP-dependent mechanisms.     

对比分析超声引导下与X线引导下腹主动脉球囊阻断在凶险性前置胎盘术中的应用价值

摘要 目的：评价分析B超和X线下引导下腹主动脉预置球囊阻断术在凶险性前置胎盘剖宫产术中的应用价值。方法：收集2016年8月至2022年6月我院收治的83例凶险性前置胎盘患者病历,其中在B超引导下腹主动脉预置球囊行剖宫产术者40例（治疗组A）,X线引导下腹主动脉预置球囊行43例（治疗组B）。比较分析两组患者子宫切除率和死亡率等;比较两组新生儿出生后1 min、5 min的Apgar评分;比较两组患者术后并发症发生率。结果：治疗组A手术时间短于治疗组B,治疗组A术中出血量小于治疗组B（P＜0.05）;两组患者术中胎盘粘连率、胎盘植入率及子宫切除率无明显差异（P＞0.05）;两组新生儿出生后均未出现新生儿窒息现象,治疗组A新生儿出生后1 min、5 min Apgar评分以及早产儿率与治疗组B比较均无统计学差异（P＞0.05）;两组患者术后总并发症发生率无差异（P＞0.05）。结论：将B超下腹主动脉预置球囊阻断术应用于凶险性前置胎盘患者剖宫产,可有效减少术中和术后出血量,对新生儿出生后Apgar评分无影响,不增加术后并发症的发生。     

IABP在瓣膜病合并巨大左心室患者中的临床应用

目的评价瓣膜病合并巨大左心室患者术后应用主动脉内球囊反搏泵(IABP)的效果.方法回顾分析本院1997～2000年瓣膜病合并巨大左心室换瓣术后应用IABP患者26例(组Ⅰ),对照组(组Ⅱ)为同期未应用IABP患者30例.观察其血流动力学、心功能、心律、ST段的,比较两组早期生存率.结果IABP辅助时间为(57±29)h,患者在应用IABP后,桡动脉压力在早期有所下降(P＜0.01);舒张压上升(P＜0.01);平均动脉压于应用后即可见明显提高,外周阻力明显降低.心律失常的变化于应用IABP后1 h频发室早或室速转为偶发室早,ST段的抬高或降低在30 min～1 h后恢复正常.组Ⅱ患者出现的频发室早或室速于(22±11)h后转为偶发室早,ST段的抬高或降低于(24±10)h后.持续左心功能(CCO)监测结果见组Ⅰ CO、CI于应用IABP后2 h明显恢复,24 h已经恢复到术前水平;组Ⅱ于24 h才有所恢复.组Ⅰ早期生存率为80.3%,与组Ⅱ(64.7%)比较P＜0.01.结论IABP能够有效地控制瓣膜病合并巨大左心室患者术后室性心律失常的发生,使心功能得到了有效的支持,大大降低了早期死亡率.     

INHIBITION OF PHENOTYPE MODULATION,GROWTH, AND MIGRATION OF VASCULAR SMOOTH MUSCLE CELLS BY A GUANOSINE-RICH 30-MER PHOSPHOROTHIOATE OLIGODEOXYNUCLEOTIDE

The testing of a 30-mer dG-rich phosphorothioate oligodeoxynucleotide (LG4PS) for effects on the behaviour of vascular smooth muscle cells (VSMC)in vitroandin vivois described. LG4PS at 0.3μm inhibited significantly the phenotype modulation of freshly isolated rabbit VSMC, and cell outgrowth from pig aortic explants was inhibited ～80% by 5μm LG4PS. The growth of proliferating rabbit and pig VSMC was inhibited ～70% by 0.3μm and 5μm LG4PS, respectively. Though less marked, the antiproliferative effects of LG4PS on human VSMC were comparable to those obtained with heparin. The cytotoxic effects of LG4PS on VSMCin vitrowere low. Despite these promising results, adventitial application of 2–200nmol LG4PS in pluronic gel failed to reduce vascular hyperplasia in balloon-injured rabbit carotid arteries, and the highest dose caused extensive mortality.     

气囊助产在48例臀位分娩中的临床应用

目的探讨气囊助产在臀位分娩中的临床应用价值。方法对我院2005年4月～2009年4月期间48例臀位孕妇施行气囊助产术资料进行回顾性分析。结果48例臀位产妇经阴道臀位助产44例（91.7%）,产后出血量少;在分娩过程中无出头困难发生,产后检查软产道无宫颈裂伤,产后未发生产褥感染。结论气囊助产技术安全可靠,经过正规培训后容易掌握,是一种值得在基层医院进一步推广的新式适宜的助产技术。     

DEEP球囊介入治疗糖尿病足的临床疗效评估

目的:评估Deep球囊扩张膝关节以下动脉及支架置入治疗糖尿病足的临床疗效及其安全性.方法:选择2007年8月～2011年8月我院收治的96例糖尿病足患者并将其随机分成A、B两组,A组(74例)使用deep球囊扩张膝关节以下细小动脉甚至足背动脉,合并股动脉狭窄者植入支架;B组(22例)单纯给以抗凝、扩血管、溶栓及相关治疗.分别观察记录和比较治疗前、后及术后1周、1、3、6、10个月患者下肢及足部皮肤颜色、温度、静息痛、足背动脉搏动、间歇性跛行、溃疡愈合情况.结果:(1)糖尿病足的血管病变多为膝关节下的动脉,包括胫前、胫后、腓动脉以及以下分支,常累及双侧数支动脉,呈阶段性分布;(2)A、B组的有效率分别为88.32％和48.63％,A组显著高于B组(P＜0.05);(3)溃疡愈合情况:0-2期A组:100％愈合,B组83.72％;3-4期A组56.25％愈合,B组18.46％,对于溃疡治疗的有效率A组显著高于B组(P＜0.05).结论:Deep球囊扩张糖尿病足膝关节以下动脉联合动脉支架术治疗糖尿病足与保守治疗相比,效果明显,可恢复下肢动脉血供,明显消除和缓解静息痛、间歇性跛行,促进溃疡的愈合.降低截肢的几率.改善生活质量.