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JAHA:速度传递函数是肺动脉硬度新的无创评估手段

2018-09-05 xing.T MedSci原创

由此可见,VTF是一种新型的右心室-PA轴偶联参数,是PA阻抗的替代指标,有可能使用心脏磁共振成像无创且可靠地评估PA的硬度和PVR升高。

肺动脉(PA)硬化与肺血管阻力(PVR)增加有关。PA硬度可通过有创的PA阻抗准确描述。近日,血管疾病领域权威杂志JAHA上发表了一篇研究文章,研究人员假设PA硬度度和阻抗可以通过PA速度传递函数(VTF)来无创地评估,VTF的计算为PA中输出/输入平均速度分布的频谱比率。

在具有临床指证进行右侧心脏导管插入术的20名参与者(55±19岁,14名女性)中,研究人员进行了全面的相位对比和心脏磁共振成像以计算PA的VTF以及右心室的质量和功能。 PA阻抗通过有创的PA压力的频谱比率和超声心动图衍生的PA流量波形来衡量。

参与者的平均PA压力为29.5±13.6 mmHg,PVR为3.5±2.8 Wood单位。混合效应模型显示VTF与PA阻抗显著相关,独立于升高的肺毛细血管楔压(P=0.005)。VTF较高频率模量的平均值与PVR相关(ρ=0.63; P=0.003),并且可以区分PVR较低(n=10)与升高(≥2.5Wood单位,n=10)的对象,曲线下面积为0.95,类似于阻抗的判别能力(曲线下面积=0.93)。VTF与右心室射血分数呈显著负相关(ρ=-0.73; P<0.001),并且与右心室质量指数呈显著正相关(ρ=0.51; P=0.02)。

由此可见,VTF是一种新型的右心室-PA轴偶联参数,是PA阻抗的替代指标,有可能使用心脏磁共振成像无创且可靠地评估PA的硬度和PVR升高。

原始出处:

Ankur Gupta  Oleg F..et al. Novel Noninvasive Assessment of Pulmonary Arterial Stiffness Using Velocity Transfer FunctionJAHA.2018. https://www.ahajournals.org/doi/full/10.1161/JAHA.118.009459

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    2019-01-29 howi
  2. [GetPortalCommentsPageByObjectIdResponse(id=1643145, encodeId=c65f1643145b7, content=<a href='/topic/show?id=928c33288c1' target=_blank style='color:#2F92EE;'>#动脉硬度#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33288, encryptionId=928c33288c1, topicName=动脉硬度)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=119323130414, createdName=howi, createdTime=Tue Jan 29 10:02:00 CST 2019, time=2019-01-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1267911, encodeId=b149126e91187, content=<a href='/topic/show?id=922f21183d' target=_blank style='color:#2F92EE;'>#AHA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2118, encryptionId=922f21183d, topicName=AHA)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=bf3d82, createdName=zhaohui6731, createdTime=Fri Sep 07 12:02:00 CST 2018, time=2018-09-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=342931, encodeId=94433429319d, content=学习一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=223, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/eiadcQaiaZ4fUvicZKEbibPBA2otZ0yzMeAVET5icsaS77W0Tvo3ibFMibzxTVRPsg62xJu0GicwBCvAlPMyu7TB6j86ug/132, createdBy=d64c1981665, createdName=一一一多, createdTime=Wed Sep 05 21:13:47 CST 2018, time=2018-09-05, status=1, ipAttribution=)]
    2018-09-07 zhaohui6731
  3. [GetPortalCommentsPageByObjectIdResponse(id=1643145, encodeId=c65f1643145b7, content=<a href='/topic/show?id=928c33288c1' target=_blank style='color:#2F92EE;'>#动脉硬度#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33288, encryptionId=928c33288c1, topicName=动脉硬度)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=119323130414, createdName=howi, createdTime=Tue Jan 29 10:02:00 CST 2019, time=2019-01-29, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1267911, encodeId=b149126e91187, content=<a href='/topic/show?id=922f21183d' target=_blank style='color:#2F92EE;'>#AHA#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2118, encryptionId=922f21183d, topicName=AHA)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=bf3d82, createdName=zhaohui6731, createdTime=Fri Sep 07 12:02:00 CST 2018, time=2018-09-07, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=342931, encodeId=94433429319d, content=学习一下, beContent=null, objectType=article, channel=null, level=null, likeNumber=223, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/eiadcQaiaZ4fUvicZKEbibPBA2otZ0yzMeAVET5icsaS77W0Tvo3ibFMibzxTVRPsg62xJu0GicwBCvAlPMyu7TB6j86ug/132, createdBy=d64c1981665, createdName=一一一多, createdTime=Wed Sep 05 21:13:47 CST 2018, time=2018-09-05, status=1, ipAttribution=)]
    2018-09-05 一一一多

    学习一下

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