HFSA 2014:射血分数降低的心衰伴肺动脉高压时肺血管对运动的反应

2014-10-14 伊文 国际循环

既往尚无研究探讨症状性射血分数降低的心衰(HFrEF)伴肺动脉高压(PH)时肺血管对运动的反应模式。在第18届美国心力衰竭学会(HFSA)科学年会上,比利时Oost-Limburg医院Frederik H. Verbrugge及同事展示的研究入选40例平均动脉压(MAP)>25 mm Hg、肺毛细血管楔压(PCWP)>15 mm Hg、心脏指数<2.5 L/(min·m2)的

既往尚无研究探讨症状性射血分数降低的心衰(HFrEF)伴肺动脉高压(PH)时肺血管对运动的反应模式。在第18届美国心力衰竭学会(HFSA)科学年会上,比利时Oost-Limburg医院Frederik H. Verbrugge及同事展示的研究入选40例平均动脉压(MAP)>25 mm Hg、肺毛细血管楔压(PCWP)>15 mm Hg、心脏指数<2.5 L/(min·m2)的40例有症状HFrEF患者,按照试验方案应用硝普钠(SNP)及利尿剂,并滴定剂量使MAP维持在65~75 mmHg、PCWP<15 mm Hg,行仰卧位自行车运动试验。随后逐渐撤用SNP,增加肾素-血管紧张素系统拮抗剂剂量并加用肼屈嗪以维持血液动力学,再次行自行车运动试验。

治疗前,肺血管阻力(PVR)低于及高于3.5 Wood单位者分别有13例(33%)和27例(67%)。消除充血后,毛细血管后PH及混合性PH患者分别有44%和20%的MAP正常化(<25 mm Hg),PVR分别降至2.6±1.2 Wood单位和3.1±0.8 Wood单位。与口服药物相比,应用SNP后,两组运动诱导后PVR增幅超过3.5 Wood单位者分别有5例(13%)和19例(48%)。运动诱导的PVR增加与右室每搏做功指数降低39%相关,应用SNP后可显著缓解。

可见,即使彻底消除充血、降低后负荷,也仅少数继发于HFrEF的PH患者完全可逆。近一半患者运动诱导后PVR增加,并伴右室每搏做功指数受损,一氧化氮供体可使其缓解。

版权声明:
本网站所有内容来源注明为“梅斯医学”或“MedSci原创”的文字、图片和音视频资料,版权均属于梅斯医学所有。非经授权,任何媒体、网站或个人不得转载,授权转载时须注明来源为“梅斯医学”。其它来源的文章系转载文章,或“梅斯号”自媒体发布的文章,仅系出于传递更多信息之目的,本站仅负责审核内容合规,其内容不代表本站立场,本站不负责内容的准确性和版权。如果存在侵权、或不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
在此留言
评论区 (3)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1925124, encodeId=589f192512478, content=<a href='/topic/show?id=26d633354c9' target=_blank style='color:#2F92EE;'>#动脉高压#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33354, encryptionId=26d633354c9, topicName=动脉高压)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=44a360, createdName=jklm09, createdTime=Sun Dec 14 06:25:00 CST 2014, time=2014-12-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1449232, encodeId=6b521449232ef, content=<a href='/topic/show?id=2ff746814f0' target=_blank style='color:#2F92EE;'>#射血分数降低#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46814, encryptionId=2ff746814f0, topicName=射血分数降低)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=50105466425, createdName=lmm399, createdTime=Thu Oct 16 00:25:00 CST 2014, time=2014-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1493340, encodeId=7494149334084, content=<a href='/topic/show?id=ff1a4681ee0' target=_blank style='color:#2F92EE;'>#射血分数降低的心衰#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46817, encryptionId=ff1a4681ee0, topicName=射血分数降低的心衰)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=74979029791, createdName=fusion, createdTime=Thu Oct 16 00:25:00 CST 2014, time=2014-10-16, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1925124, encodeId=589f192512478, content=<a href='/topic/show?id=26d633354c9' target=_blank style='color:#2F92EE;'>#动脉高压#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33354, encryptionId=26d633354c9, topicName=动脉高压)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=44a360, createdName=jklm09, createdTime=Sun Dec 14 06:25:00 CST 2014, time=2014-12-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1449232, encodeId=6b521449232ef, content=<a href='/topic/show?id=2ff746814f0' target=_blank style='color:#2F92EE;'>#射血分数降低#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46814, encryptionId=2ff746814f0, topicName=射血分数降低)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=50105466425, createdName=lmm399, createdTime=Thu Oct 16 00:25:00 CST 2014, time=2014-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1493340, encodeId=7494149334084, content=<a href='/topic/show?id=ff1a4681ee0' target=_blank style='color:#2F92EE;'>#射血分数降低的心衰#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46817, encryptionId=ff1a4681ee0, topicName=射血分数降低的心衰)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=74979029791, createdName=fusion, createdTime=Thu Oct 16 00:25:00 CST 2014, time=2014-10-16, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1925124, encodeId=589f192512478, content=<a href='/topic/show?id=26d633354c9' target=_blank style='color:#2F92EE;'>#动脉高压#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33354, encryptionId=26d633354c9, topicName=动脉高压)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=44a360, createdName=jklm09, createdTime=Sun Dec 14 06:25:00 CST 2014, time=2014-12-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1449232, encodeId=6b521449232ef, content=<a href='/topic/show?id=2ff746814f0' target=_blank style='color:#2F92EE;'>#射血分数降低#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46814, encryptionId=2ff746814f0, topicName=射血分数降低)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=50105466425, createdName=lmm399, createdTime=Thu Oct 16 00:25:00 CST 2014, time=2014-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1493340, encodeId=7494149334084, content=<a href='/topic/show?id=ff1a4681ee0' target=_blank style='color:#2F92EE;'>#射血分数降低的心衰#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=0, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=46817, encryptionId=ff1a4681ee0, topicName=射血分数降低的心衰)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=74979029791, createdName=fusion, createdTime=Thu Oct 16 00:25:00 CST 2014, time=2014-10-16, status=1, ipAttribution=)]