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二尖瓣环

二尖瓣环的相关文献在1989年到2023年内共计199篇,主要集中在内科学、临床医学、基础医学 等领域,其中期刊论文165篇、会议论文3篇、专利文献589574篇;相关期刊88种,包括上海医学影像、中国超声医学杂志、中国医学影像技术等; 相关会议3种,包括中国老年学学会老年医学委员会第四届全国会员代表大会暨全国老年医疗与护理论坛、第十届全国超声医学学术会议、首届国际医学影像学暨介入医学学术会议等;二尖瓣环的相关文献由581位作者贡献,包括张云山、沈燕华、贺声等。

二尖瓣环—发文量

期刊论文>

论文:165 占比:0.03%

会议论文>

论文:3 占比:0.00%

专利文献>

论文:589574 占比:99.97%

总计:589742篇

二尖瓣环—发文趋势图

二尖瓣环

-研究学者

  • 张云山
  • 沈燕华
  • 贺声
  • 金埈弘
  • 沈学东
  • 丁云川
  • 刘霞
  • 李明旭
  • 李馨
  • 潘翠珍
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 邓浩; 孙萌萌; 池一凡
    • 摘要: 二尖瓣反流(Mitral regurgitation, MR)是最为常见的心脏瓣膜病,随着人口老龄化的加剧,患病率也越来越高,手术方式也有了巨大的变革。经皮二尖瓣修复术(Percutaneous mitral valve repair, PMVR)是目前新兴的治疗方式,在医疗领域受到越来越多的关注。PMVR不破坏二尖瓣的天然生理解剖,具有较高的安全性和可行性。但由于二尖瓣解剖结构的复杂,需要可行性较高的二尖瓣修复系统。本文介绍各种二尖瓣修复的新兴治疗系统。
    • 刘秋颖; 刘狄; 张云山
    • 摘要: 目的 利用超声学方法探讨心肌梗死患者二尖瓣反流(mitral regurgitation,MR)的发生机制.方法 选择2015年6月至2016年6月于海军总医院心内科住院治疗的84例心肌梗死患者(心梗组)和30例健康人(对照组)进行超声心动图检查,半定量判定二尖瓣反流程度,测量左室重构参数,左室舒张末容积(end diastolic volume,EDV)、左室收缩末容积(cend systolic volume,ESV)、瓣环-乳头肌间距(annular-papillary distance,APD)、射血分数(ejection fraction,EF),计算左室球形指数(sphericity indice,SI);测量二尖瓣几何形变参数,舒张期二尖瓣环面积(mitral annular area,MAA)、二尖瓣环收缩功能(mitral annular contraction,MAC)、对合高度(coaptation depth,CD)、对合点下面积(tenting area,TA)、前叶活动角度(AM angle)和左房容积指数(left atria volume index,LAVI).结果 心梗组MAA、TA、EDV、ESV、SI、APD、CD和LAVI高于对照组,MAC、AM angle和EF低于对照组(P<0.05).不同反流程度患者超声参数对比,随MR程度加重,MAA、TA、CD、EDV、ESV、SI、APD、LAVI逐渐增大,MAC、AM angle、EF逐渐减低.多因素回归分析发现,MR程度与TA、CD、MAA和LAVI相关.结论 左室重构会引起MR,该影响是通过改变二尖瓣几何构型来实现的.
    • 梅丹娥; 郭瑞强; 陈金玲; 宋宏宁; 曹省; 邓倾; 周青; 冯闯丽; 加丹; 赵志玉
    • 摘要: 目的 初步评估基于三维经食管超声心动图(3D-TEE)二尖瓣环3D打印的可行性与3D打印模型的精准度.方法 回顾性研究二尖瓣轻度及以下反流患者25例,二尖瓣中重度反流患者10例,均已接受3D-TEE检查.选取处于舒张末期二尖瓣环3D-TEE图像,以Mimics软件对其进行后处理,获取二尖瓣环标准镶嵌语言格式文件,输出文件至3D打印机,打印出3D模型.在3D模型及相应3D-TEE图像中分别测量二尖瓣环前后直径、前外后内直径、球度指数、周长等参数.计算3D模型与3D-TEE图像中二尖瓣环各参数测值的绝对差值.结果 对所有患者二尖瓣环3D-TEE图像均成功进行了后处理,并通过高精度3D打印机打印出相应的模型;3D打印模型中二尖瓣环各参数测值与3D-TEE图像间差异均无统计学意义(P>0.05),且一致性高,所有测值均在一致性界值范围内;二尖瓣环3D打印模型与3D-TEE图像间各参数测值的绝对差值均较小.结论 以3D-TEE图像为数据源进行二尖瓣环3D打印可行且精准度较高.%Objective To evaluate the feasibility of three-dimensional (3D) printing of mitral annulus with transesophageal echocardiographic volume images as the data source ,and to assess the accuracy of the 3D printing mitral annulus models based on three dimensional transesophageal echocardiography ( 3D-TEE) images preliminarily . Methods A retrospective study was performed in 25 patients with mild or slight mitral regurgitation and 10 patients with moderate to severe mitral regurgitation . All the subjects were underwent 3D-TEE . The 3D-TEE volume images of mitral annulus at the end diastole were post-processed by Mimics software to create images of the mitral annulus in standard tessellation language format . The STL file was output to the 3D printer and the 3D printing models of mitral annulus were obtained . The mitral annulus size parameters including the diameter between anterior and posterior ,the diameter between anterolaterior and posteromedial ,sphericity index and mitral annulus circumference were measured from 3D printing models and 3D-TEE images ,respectively . From which the absolute difference of the measurements between 3D printing models and the 3D-TEE images were calculated . Results All of the 3D-TEE images were successfully post-processed ,and the corresponding 3D printing models were acquired by high-precision 3D printer . It showed no significant difference in all the mitral annulus size parameters between 3D printing modelsand3D-TEEimages(allP >0.05) .Morever,thesizeparameterswereconcordantwellbetweenthe two methods ,all of the data points fell within the limits of agreement . It showed little absolute difference in value of the mitral annulus size parameters between the 3D printing mitral annulus models and the 3D-TEE images . Conclusions It is technically feasible to print 3D models of mitral annulus using 3D-TEE images as the data source . 3D printing mitral annulus models based on transesophageal echocardiographic volume images have high precision .
    • 徐晓薇(综述); 林涛(审校)
    • 摘要: The atrioventricular annulus ( mitral annulus and tricuspid annulus ) is a common predilection area of premature ventricu-lar contractions(PVCs).The electrocardiogram of the PVCs originating from atrioventricular annulus has its own characteristics .To be famil-iar with the anatomy of atrioventricular annulus ,and to locate the site of the PVCs from atrioventricular annulus by the characteristics of body surface electrocardiogram .Most of these PVCs can be cured by catheter ablation .In this article,we reviewed the anatomic features of mitral annulus and tricuspid annulus ,the characteristics of electrocardiogram of the PVCs originating from atrioventricular annulus and catheter abla -tion of these PVCs .%房室瓣环(二尖瓣环和三尖瓣环)是室性期前收缩( PVCs)较常见的好发区域,来源于此的PVCs心电图有其特有特征。熟悉心脏房室瓣环解剖结构、通过体表心电图特点对瓣环PVCs做出具体定位判断。通过有目的、有重点地在感兴趣部位进行仔细标测,射频导管消融对来源于此的PVCs有良好的疗效。现对二尖瓣环和三尖瓣环的解剖特点,心电图特征和射频导管消融进行综述。
    • 摘要: 经皮二尖瓣环成形系统(MPAS)获得欧洲监管机构的批准。用于修复功能性二尖瓣关闭不全。Mitralign微创系统可助医师实现二尖瓣微重塑技术.手术切口更小,减少切口同流量,有效提高治疗效果.
    • 陈惠珍; 林美燕; 阮琴韵; 黄春燕
    • 摘要: 目的 探讨二尖瓣环运动速度及其达峰时间变化对左心功能不全患者舒张功能的评价价值.方法 选择舒张性心功能不全(DD组)及收缩性心功能不全(SD组)患者各30例,全方向M型曲线定量分析系统获取二尖瓣环收缩期与舒张期速度及其达峰时间指标.结果 DD组与SD组收缩期、舒张早期瓣环速度、加速度均降低,速度及加速度的达峰时间均延长(P<0.05),但舒张早期速度及加速度达峰时间DD组延长程度大于SD组(P<0.()5).结论 二尖瓣环M型运动曲线多种参数均可评价左室收缩或舒张功能上的变化,舒张速度及加速度达峰时间延长程度可鉴别舒张性与收缩性心功能不全的舒张功能差异.
    • 张红梅; 尹立雪; 颜华英; 苗俊旺; 谢盛华; 李文华; 孟庆国
    • 摘要: 目的 探讨双脉冲多普勒(DPW)技术同步评价二尖瓣环组织运动和主动脉瓣、二尖瓣血流的耦联关系.方法 选取健康成年志愿者110名,采用DPW技术同步获取二尖瓣环组织运动与瓣口血流频谱图,测量峰值起始时间(Ts)和达峰时间(Tp),并进行统计学分析.结果 二尖瓣瓣环收缩期Ts及Tp均早于主动脉瓣口血流速度的Ts和Tp[Ts:(42.65±9.36)ms vs(61.38±12.19)ms;Tp:(96.63±14.77)ms vs (145.88±21.50)ms,P均<0.05];在整个心动周期中,二尖瓣瓣环Ts与瓣口血流Ts均有相关性(r=0.323、0.703、0.275,P均<0.05);二尖瓣瓣环Tp与瓣口血流Tp仅在舒张早期有相关性(r=0.760,P<0.001).结论 正常成年人心肌收缩与瓣口血流形成存在机械收缩-血流形成延迟,且心肌运动与瓣口血流形成有相关性.
    • 霍晓光; 童晓明; 刘晓; 孟晓娇; 王涛; 马炎
    • 摘要: 目的 采用组织多普勒显像(TDI)技术评价左室肥厚(LVH)患者二尖瓣环舒张中期心肌速度曲线的特点及临床价值.方法 采用常规多普勒对168例LVH患者进行检查,测定二尖瓣舒张早期血流速度峰值(E)、舒张中期血流峰值速度(L)和舒张晚期血流峰值速度(A峰);采用TDI技术测定二尖瓣环侧壁或间壁收缩期运动速度(Sa)、舒张早期二尖瓣环运动速度(Ea)、舒张中期二尖瓣环运动速度(La)和舒张晚期二尖瓣环运动速度(Aa).结果 168例LVH患者中,56例(33%)发现有La,而且测定部位多见于二尖瓣环侧壁;42例(25%)发现有舒张中期跨二尖瓣血流L,La的存在预示左室充盈压的增加,有进一步发生心力衰竭(HF)的危险性.而当L与La相关时,发生HF的危险性增加.结论 LVH患者中多数可探测到舒张中期心肌速度La曲线,尤其在瓣环侧更容易检测到,它的存在,特别是与跨二尖瓣舒张中期血流峰值速度相关时,预示有左室充盈压增加和发生HF事件的危险性.%Objective To explore the features and clinical effectiveness of application of TDI (Tissue Doppler Imaging) in evaluation of mid-diastolic mitral annular velocity curve in patients with LVH (Left Ventricular Hypertrophy). MethodsConventional Doppler imaging was performed in 168 LVH patients to measure the indexes of early-diastolic (E), mid-diastolic (L), late-diastolic (A) blood lfow velocities of mitral valves. While, TDI was applied to measure the systolic motion velocity (Sa) of the lateral or septal wall of mitral valve annulus as well as the early-diastolic (Ea), mid-diastolic (La), late-diastolic (Aa) mitral annular motion velocity.Results Among all the 168 patients with LVH, 56 cases(33%) were identified with La especially in the lateral wall of mitral valve annulus; whereas mid-diastolic trans-mitrial blood lfow L was found in 42 (25%) cases. La indicated the increase of left ventricular iflling pressure and the risks of further HF (Heart Failure). When La was associated with the L, the risks of HF would be increased further.Conclusion La was frequently observed in patients with LVH, especially at the lateral annulus. Its presence might predict the increase of left ventricular iflling pressure and potential risks for HF events, particularly when it was associated with mid-diastolic trans-mitral blood flow velocity.
    • 刘蕙; 王庆慧; 陈剑; 尹帆; 罗庆祎; 苏璇; 丁云川
    • 摘要: 目的 探讨双通道多普勒法(DPW)矫正二尖瓣血流,所测E/Em在评价左室舒张功能中的价值.方法 门诊148例健康体检者,按年龄分为6组:20 ~ 29岁组(22例)、30 ~39岁组(25例)、40 ~ 49岁组(22例)、50~ 59岁组(31例)、60~ 69岁组(30例)及70~ 87岁组(18例).采用DPW和常规多普勒法分别测量各组二尖瓣血流频谱多普勒及组织频谱多普勒参数,并矫正获取E/Em.对比分析两种方法获取的E/Em之间的差异性.对两种方法测量E/Em≥9.2的受检者行心内导管测量左室舒张末压(LVEDP)及冠状动脉造影.结果 DPW通过矫正后获得的E、A及E/Em较常规多普勒法测值升高(P<0.01).DPW法测量E/Em在50~59岁组与60~69岁组间、60~69岁组与70~87岁组间比较,差异有统计学意义(P=0.048、0.000);常规多普勒法仅在60~69岁组与70~87岁组间比较差异有统计学意义(P=0.010).结合心内导管测压及冠状动脉造影,常规多普勒法未检测出年龄50~59岁组、60~ 69岁组中LVEDP增高的受检者,且70~87岁组中亦漏检1例;DPW对左室舒张功能异常的检出率明显高于常规多普勒法.结论 相比常规多普勒法,DPW于同一心动周期矫正二尖瓣血流获取的E/Em,能真实准确地反映心脏功能状态.结合心内导管测压,DPW测量E/Em能更敏感地评估左室舒张功能,避免造成高假阴性率,为临床疾病预防、诊治及疗效评估提供有效依据.
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