Baidu
map

JACC:左室负荷降低可减少房性心律失常发生率

2018-08-13 MedSci MedSci原创

左心房(LA)的生理机能是受到左心室(LV)的功能和负荷影响的。本研究的目的旨在评估亚急性心梗状态下LV负荷的快速变化对LA生理机能的影响。本研究对19只实验猪进行了心梗建模,心梗后1-2周,通过经皮LV辅助装置(Impella)对14只猪进行了急性左室负荷的降低,剩余的5只猪通过经皮诱导主动脉反流引起急性左室负荷增高,通过压力负荷导管对LA进行实时的监测,并检测LA尼克酰胺腺嘌呤二核苷酸磷酸氧化

左心房(LA)的生理机能是受到左心室(LV)的功能和负荷影响的。本研究的目的旨在评估亚急性心梗状态下LV负荷的快速变化对LA生理机能的影响。

本研究对19只实验猪进行了心梗建模,心梗后1-2周,通过经皮LV辅助装置(Impella)对14只猪进行了急性左室负荷的降低,剩余的5只猪通过经皮诱导主动脉反流引起急性左室负荷增高,通过压力负荷导管对LA进行实时的监测,并检测LA尼克酰胺腺嘌呤二核苷酸磷酸氧化酶(NOX)和碱受体的磷酸化水平,以评估氧化应激水平。分析结果显示,急性左室负荷的降低可以减少左室舒张末期的压力,从而降低LA的平均压力和最大容积。在急性左室负荷降低之前,有71%的猪可诱导为心律不齐,而左室负荷的降低使这一比例减少为29%(p=0.02)。相反,增加左室负荷可以增加LA的压力,但不影响心房的心律。分子水平结果显示心梗后NOX2的表达水平升高,急性左室负荷降低可以减少NOX2表达水平。

研究结果显示,在亚急性心梗状态下,急性左室负荷降低可以缓解左房的伸张性,减少心房心律失常的发生率。

原始出处:

本文系梅斯医学(MedSci)原创编译整理,转载需授权

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 (4)
#插入话题
  1. [GetPortalCommentsPageByObjectIdResponse(id=1826468, encodeId=c9d118264681b, content=<a href='/topic/show?id=e5283e89970' target=_blank style='color:#2F92EE;'>#发生率#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37899, encryptionId=e5283e89970, topicName=发生率)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Sat Apr 20 08:08:00 CST 2019, time=2019-04-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1774874, encodeId=598d1e74874e5, content=<a href='/topic/show?id=d6ce54226ce' target=_blank style='color:#2F92EE;'>#房性心律失常#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54226, encryptionId=d6ce54226ce, topicName=房性心律失常)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=cc6238698305, createdName=luoxiaog, createdTime=Wed Jan 09 02:08:00 CST 2019, time=2019-01-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1854125, encodeId=ee7a185412516, content=<a href='/topic/show?id=48351020537' target=_blank style='color:#2F92EE;'>#JACC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10205, encryptionId=48351020537, topicName=JACC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=55ce62, createdName=hbwxf, createdTime=Tue Mar 26 01:08:00 CST 2019, time=2019-03-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1325931, encodeId=579a1325931a4, content=<a href='/topic/show?id=96c71804b7' target=_blank style='color:#2F92EE;'>#ACC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1804, encryptionId=96c71804b7, topicName=ACC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1e452500029, createdName=12498568m50暂无昵称, createdTime=Wed Aug 15 06:08:00 CST 2018, time=2018-08-15, status=1, ipAttribution=)]
  2. [GetPortalCommentsPageByObjectIdResponse(id=1826468, encodeId=c9d118264681b, content=<a href='/topic/show?id=e5283e89970' target=_blank style='color:#2F92EE;'>#发生率#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37899, encryptionId=e5283e89970, topicName=发生率)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Sat Apr 20 08:08:00 CST 2019, time=2019-04-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1774874, encodeId=598d1e74874e5, content=<a href='/topic/show?id=d6ce54226ce' target=_blank style='color:#2F92EE;'>#房性心律失常#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54226, encryptionId=d6ce54226ce, topicName=房性心律失常)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=cc6238698305, createdName=luoxiaog, createdTime=Wed Jan 09 02:08:00 CST 2019, time=2019-01-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1854125, encodeId=ee7a185412516, content=<a href='/topic/show?id=48351020537' target=_blank style='color:#2F92EE;'>#JACC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10205, encryptionId=48351020537, topicName=JACC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=55ce62, createdName=hbwxf, createdTime=Tue Mar 26 01:08:00 CST 2019, time=2019-03-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1325931, encodeId=579a1325931a4, content=<a href='/topic/show?id=96c71804b7' target=_blank style='color:#2F92EE;'>#ACC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1804, encryptionId=96c71804b7, topicName=ACC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1e452500029, createdName=12498568m50暂无昵称, createdTime=Wed Aug 15 06:08:00 CST 2018, time=2018-08-15, status=1, ipAttribution=)]
  3. [GetPortalCommentsPageByObjectIdResponse(id=1826468, encodeId=c9d118264681b, content=<a href='/topic/show?id=e5283e89970' target=_blank style='color:#2F92EE;'>#发生率#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37899, encryptionId=e5283e89970, topicName=发生率)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Sat Apr 20 08:08:00 CST 2019, time=2019-04-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1774874, encodeId=598d1e74874e5, content=<a href='/topic/show?id=d6ce54226ce' target=_blank style='color:#2F92EE;'>#房性心律失常#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54226, encryptionId=d6ce54226ce, topicName=房性心律失常)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=cc6238698305, createdName=luoxiaog, createdTime=Wed Jan 09 02:08:00 CST 2019, time=2019-01-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1854125, encodeId=ee7a185412516, content=<a href='/topic/show?id=48351020537' target=_blank style='color:#2F92EE;'>#JACC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10205, encryptionId=48351020537, topicName=JACC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=55ce62, createdName=hbwxf, createdTime=Tue Mar 26 01:08:00 CST 2019, time=2019-03-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1325931, encodeId=579a1325931a4, content=<a href='/topic/show?id=96c71804b7' target=_blank style='color:#2F92EE;'>#ACC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1804, encryptionId=96c71804b7, topicName=ACC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1e452500029, createdName=12498568m50暂无昵称, createdTime=Wed Aug 15 06:08:00 CST 2018, time=2018-08-15, status=1, ipAttribution=)]
    2019-03-26 hbwxf
  4. [GetPortalCommentsPageByObjectIdResponse(id=1826468, encodeId=c9d118264681b, content=<a href='/topic/show?id=e5283e89970' target=_blank style='color:#2F92EE;'>#发生率#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=56, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=37899, encryptionId=e5283e89970, topicName=发生率)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Sat Apr 20 08:08:00 CST 2019, time=2019-04-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1774874, encodeId=598d1e74874e5, content=<a href='/topic/show?id=d6ce54226ce' target=_blank style='color:#2F92EE;'>#房性心律失常#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54226, encryptionId=d6ce54226ce, topicName=房性心律失常)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=cc6238698305, createdName=luoxiaog, createdTime=Wed Jan 09 02:08:00 CST 2019, time=2019-01-09, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1854125, encodeId=ee7a185412516, content=<a href='/topic/show?id=48351020537' target=_blank style='color:#2F92EE;'>#JACC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=10205, encryptionId=48351020537, topicName=JACC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=55ce62, createdName=hbwxf, createdTime=Tue Mar 26 01:08:00 CST 2019, time=2019-03-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1325931, encodeId=579a1325931a4, content=<a href='/topic/show?id=96c71804b7' target=_blank style='color:#2F92EE;'>#ACC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=1804, encryptionId=96c71804b7, topicName=ACC)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=1e452500029, createdName=12498568m50暂无昵称, createdTime=Wed Aug 15 06:08:00 CST 2018, time=2018-08-15, status=1, ipAttribution=)]

相关资讯

JACC:冠脉微血管功能不良可作为肥胖患者的心血管风险分层因子

除了体重指数(BMI)外,尚需要其他的因素来鉴别肥胖患者的心血管风险。本研究的目的旨在评估肥胖、冠脉微血管功能不良(CMD)和不良反应事件的相关性。本研究对827名心脏灌注正电子发射断层显像显示正常灌注的肥胖患者进行平均5.6年时间的随访,观察事件主要包括死亡、心梗或心衰住院。分析结果显示,BMI与冠脉血流储备(CFR)呈倒J型曲线相关,即在肥胖患者中,CFR随着BMI的升高而降低(p <

Circulation:痛风患者使用别嘌呤醇与非布索坦的心血管安全性相似

高尿酸血症和痛风均会增加患者的心血管疾病(CVD)风险。目前,黄嘌呤氧化酶抑制剂(XOI)、别嘌呤醇和非布索坦是痛风患者进行降低尿酸治疗的主要药物,可对心血管风险产生不同的影响。

JACC:血浆二甲基精氨酸水平与房颤患者预后相关

一氧化氮(NO)理论上可以增加房颤患者血栓栓塞和出血的发生风险。本研究的目的旨在评估血浆甲基化精氨酸衍生物不对称和对称二甲基精氨酸(ADMA/SDMA)同时也是NO抑制剂与房颤患者预后的相关性。本研究纳入了ARISTOTLE临床试验中的5004名房颤患者,并取得了血浆样本,通过高效液相色谱法对其ADMA/SDMA水平进行了检测,平均随访时间是1.9年。分析结果显示,ADMA/SDMA水平随着患者年

Int J Chron Obstruct Pulmon Dis:需要住院治疗的AECOPD患者QTc延长的意义

QT间期延长与扭转性室速风险增加和心血管死亡有关。COPD急性加重期(AECOPD)具有高心脏病发病率和死亡率的风险,目前尚不清楚QT延长在COPD急性加重期中的发生率和临床相关性。

Lancet:1型糖尿病:发病年龄影响生存率和心血管结局?

1型糖尿病是儿童第二常见慢性疾病,具有高死亡率和高心血管疾病风险。研究提示发病年龄可辅助鉴别2型糖尿病的亚型并预测其危险因素的改变轨迹,同时有证据显示早发病较晚发危害更大。然而目前有关发病年龄对1型糖尿病预后影响的类似研究数量甚少且证据不足。

中国高血压调查结果:心血管病医疗费用增速赶超GDP,移动医疗是契机?

在中国心脏大会2018(CHC2018)心血管社区防治论坛上,国家心血管病中心、阜外医院王增武教授把脉了我国最新的心血管病流行趋势,并介绍了我国当前的防治不完善之处和应对策略。

Baidu
map
Baidu
map
Baidu
map