AJRCCM:晚期肺动脉高压阻塞性肺功能的演变

2021-09-24 刘少飞 MedSci原创

肺动脉高压 (PAH) 的特征是肺动脉阻抗增加,导致运动不耐受和右心衰竭。 随着针对右心衰竭的治疗方法的改进,人们对 PAH 降低运动能力的新途径越来越感兴趣,这是一个关键的治疗目标。

众所周知,肺动脉高压 (PAH) 的特征是肺动脉阻抗增加,导致运动不耐受和右心衰竭。 随着针对右心衰竭的治疗方法的改进,人们对 PAH治疗的新途径越来越感兴趣。虽然在PAH患者中限制性肺病的病人能被很好地识别,在先前的横断面 PAH 研究中也描述了外周气道阻塞和动态过度充气。 该研究试图描述晚期 PAH 阻塞性生理学的演变,并结合成像和组织病理学研究潜在机制

该研究由美国学者发现发表于AJRCCM,其:

研究题目:Evolution of Obstructive Lung Function in Advanced Pulmonary Arterial Hypertension

期刊年卷:Am J Respir Crit Care Med 2021 Sep 23; 

通讯作者:Rajan Saggar, MD
Division of Pulmonary and Critical Care Medicine
David Geffen School of Medicine at UCLA

该研究PAH队列的人口统计学、肺功能、胸部影像学参数和血流动力学数据(在诊断和移植时)如表 1 所示。 患者通常为年轻、从 1993 年至 2014 年被诊断为 PAH 的不吸烟女性,并于 2004-2020年接受移植。 最终 PAH 诊断基于临床/放射学/病理学相关性,包括特发性 PAH (n=10)、肺毛细血管瘤病 (PCH) (n=2)、苯丙胺/厌食症 (n=2) 和纠正先天性 (n= 1)。 诊断性右心导管插入术和移植之间的中位时间为 8.7 年。 诊断和移植之间的肺血流动力学没有显着变化(表 1)。

在肺移植时,大多数患者的 FEV1 (14/15) 和 FVC (13/15) 绝对值在第 5 个百分位数内,6/15 患者满足阻塞性肺病(OLD)的标准(图 1)。
从初始诊断到移植,绝对 FEV1以及FVC逐年显着下降;FEV1/FVC 比值从 76.0 [70.0-82.0] 显着下降至 71.0 [66.5-76.5],每年下降 1.1 [0.5-1.3]。同样,FEV1/FVCz 从-0.8 [-1.7 至 0.2] 显着下降至 -1.5 [-2.3 至 -0.90],每年下降 -0.10 [-0.14 至 -0.04]。因此,大多数患者从诊断到移植之间进展到更低(更负)的 FEV1/FVCz 百分位分类(图 1),这与阻塞性肺功能恶化一致。根据移植时的成像,没有肺气肿或空气滞留的证据(表 1),并且没有发现支持任何其他实质或气道疾病。

图1-左上图说明了绝对 FEV1 和 FVC 的变化;左下图说明了同一时间点之间每个受试者的 FEV1/FVCz 的演变;左下图说明每个 FEV1/FVCz 百分位数内的受试者数量,比较两个时间点,PAH 诊断和肺移植;右上图显示了两个有代表性的血管重建(受试者 #14 和 #12),并附有一个颜色图例,描述了基于横截面积从 0.8mm2(红色)到 100mm2(蓝色)的肺动脉尺寸范围;右下图显示与具有适度主肺动脉扩张和较高 FEV1/FVCz 的受试者相比,轴向截面在具有较低 FEV1/FVCz 的受试者中表现出相对严重的主肺动脉扩张。

总之,该研究的分析表明,晚期 PAH 患者可能会表现出与胸部成像参数相关的进行性阻塞性生理,这些参数表明胸腔血容量增加,但没有空气滞留。这些发现支持扩大/充血的肺动脉直接或间接调节动态气道功能的假设。此外,建议将 PAH 添加到已知表现出限制性和阻塞性生理的现有呼吸系统疾病中。这种阻塞性生理机制是否会导致 PAH 中 V/Q 不匹配和气体交换的恶化,或者它是否对支气管扩张剂治疗有反应,仍有待确定。在未来的 PAH 临床试验中,可能需要考虑将连续肺功能作为终点。未来的研究需要确认阻塞生理学的演变并确定 PAH 的潜在机制。

原文出处:Rahaghi FN. Evolution of Obstructive Lung Function in Advanced Pulmonary Arterial Hypertension. Am J Respir Crit Care Med. 2021 Sep 23. doi: 10.1164/rccm.202105-1169LE. Epub ahead of print. PMID: 34555310.

 

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    2021-11-27 oliver181
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    2022-01-08 tomyang96
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    2021-11-04 isabellayj
  5. [GetPortalCommentsPageByObjectIdResponse(id=1925376, encodeId=f6f819253e64a, 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=36, 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=Sat Oct 16 16:41:23 CST 2021, time=2021-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1745875, encodeId=de421e4587597, content=<a href='/topic/show?id=34a5666451b' target=_blank style='color:#2F92EE;'>#演变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66645, encryptionId=34a5666451b, topicName=演变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96a135615295, createdName=oliver181, createdTime=Sat Nov 27 12:41:23 CST 2021, time=2021-11-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1696985, encodeId=592f169698593, content=<a href='/topic/show?id=d2e99e651e4' target=_blank style='color:#2F92EE;'>#阻塞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97651, encryptionId=d2e99e651e4, topicName=阻塞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a23129903429, createdName=tomyang96, createdTime=Sat Jan 08 17:41:23 CST 2022, time=2022-01-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036693, encodeId=a90e20366936d, content=<a href='/topic/show?id=3bde1518863' target=_blank style='color:#2F92EE;'>#RCC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15188, encryptionId=3bde1518863, topicName=RCC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d784426, createdName=isabellayj, createdTime=Thu Nov 04 08:41:23 CST 2021, time=2021-11-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1072355, encodeId=a23c10e235545, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210127/c09c3956adb5442387919068b900d463/bcf0715bb06444c39f656be1ea2a4032.jpg, createdBy=654b5456554, createdName=爱微笑的婧姑娘, createdTime=Sat Nov 20 22:08:45 CST 2021, time=2021-11-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1071831, encodeId=e15a10e183101, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=405f5576976, createdName=廉润庆, createdTime=Fri Nov 19 18:55:42 CST 2021, time=2021-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1058602, encodeId=51dc10586022c, content=👍 👍 , beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=33605015481, createdName=翟哲民, createdTime=Fri Oct 08 13:54:39 CST 2021, time=2021-10-08, status=1, ipAttribution=)]
    2021-11-20 爱微笑的婧姑娘

    学习了

    0

  6. [GetPortalCommentsPageByObjectIdResponse(id=1925376, encodeId=f6f819253e64a, 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=36, 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=Sat Oct 16 16:41:23 CST 2021, time=2021-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1745875, encodeId=de421e4587597, content=<a href='/topic/show?id=34a5666451b' target=_blank style='color:#2F92EE;'>#演变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66645, encryptionId=34a5666451b, topicName=演变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96a135615295, createdName=oliver181, createdTime=Sat Nov 27 12:41:23 CST 2021, time=2021-11-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1696985, encodeId=592f169698593, content=<a href='/topic/show?id=d2e99e651e4' target=_blank style='color:#2F92EE;'>#阻塞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97651, encryptionId=d2e99e651e4, topicName=阻塞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a23129903429, createdName=tomyang96, createdTime=Sat Jan 08 17:41:23 CST 2022, time=2022-01-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036693, encodeId=a90e20366936d, content=<a href='/topic/show?id=3bde1518863' target=_blank style='color:#2F92EE;'>#RCC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15188, encryptionId=3bde1518863, topicName=RCC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d784426, createdName=isabellayj, createdTime=Thu Nov 04 08:41:23 CST 2021, time=2021-11-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1072355, encodeId=a23c10e235545, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210127/c09c3956adb5442387919068b900d463/bcf0715bb06444c39f656be1ea2a4032.jpg, createdBy=654b5456554, createdName=爱微笑的婧姑娘, createdTime=Sat Nov 20 22:08:45 CST 2021, time=2021-11-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1071831, encodeId=e15a10e183101, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=405f5576976, createdName=廉润庆, createdTime=Fri Nov 19 18:55:42 CST 2021, time=2021-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1058602, encodeId=51dc10586022c, content=👍 👍 , beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=33605015481, createdName=翟哲民, createdTime=Fri Oct 08 13:54:39 CST 2021, time=2021-10-08, status=1, ipAttribution=)]
    2021-11-19 廉润庆

    学习了

    0

  7. [GetPortalCommentsPageByObjectIdResponse(id=1925376, encodeId=f6f819253e64a, 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=36, 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=Sat Oct 16 16:41:23 CST 2021, time=2021-10-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1745875, encodeId=de421e4587597, content=<a href='/topic/show?id=34a5666451b' target=_blank style='color:#2F92EE;'>#演变#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=30, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=66645, encryptionId=34a5666451b, topicName=演变)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=96a135615295, createdName=oliver181, createdTime=Sat Nov 27 12:41:23 CST 2021, time=2021-11-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1696985, encodeId=592f169698593, content=<a href='/topic/show?id=d2e99e651e4' target=_blank style='color:#2F92EE;'>#阻塞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=41, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=97651, encryptionId=d2e99e651e4, topicName=阻塞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=a23129903429, createdName=tomyang96, createdTime=Sat Jan 08 17:41:23 CST 2022, time=2022-01-08, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2036693, encodeId=a90e20366936d, content=<a href='/topic/show?id=3bde1518863' target=_blank style='color:#2F92EE;'>#RCC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=39, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=15188, encryptionId=3bde1518863, topicName=RCC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=d784426, createdName=isabellayj, createdTime=Thu Nov 04 08:41:23 CST 2021, time=2021-11-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1072355, encodeId=a23c10e235545, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210127/c09c3956adb5442387919068b900d463/bcf0715bb06444c39f656be1ea2a4032.jpg, createdBy=654b5456554, createdName=爱微笑的婧姑娘, createdTime=Sat Nov 20 22:08:45 CST 2021, time=2021-11-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1071831, encodeId=e15a10e183101, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=51, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=405f5576976, createdName=廉润庆, createdTime=Fri Nov 19 18:55:42 CST 2021, time=2021-11-19, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1058602, encodeId=51dc10586022c, content=👍 👍 , beContent=null, objectType=article, channel=null, level=null, likeNumber=77, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=33605015481, createdName=翟哲民, createdTime=Fri Oct 08 13:54:39 CST 2021, time=2021-10-08, status=1, ipAttribution=)]
    2021-10-08 翟哲民

    👍 👍

    0

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