好神奇!心脏也有记忆功能……

2018-07-04 英硕 医学界心血管频道

心,从古至今、从国外到国内,一直都是文人的宠儿,无论是表达悲伤还是快乐,是亲情还是爱情,都离不开“心”,比如李煜的“别是一般滋味在心头”,比如李之仪的“只愿君心似我心,定不负相思意”。

心,从古至今、从国外到国内,一直都是文人的宠儿,无论是表达悲伤还是快乐,是亲情还是爱情,都离不开“心”,比如李煜的“别是一般滋味在心头”,比如李之仪的“只愿君心似我心,定不负相思意”。

但大家都知道,心脏是不能记忆和表达感情的,发挥这一功能的是脑,但如果把脑代入到上述诗句,求作者的心理阴影面积。

不过,心脏并不是一个单纯储血的容器,它是有记忆的,你相信吗?我这就带大家重新认识一下熟悉又陌生的心脏。

病例简介

患者男性,56岁,因间断发作胸闷胸痛就诊于当地医院。

患者体格检查未见明显异常,超声心动图未见明显器质性病变,运动平板试验基本正常。因患者每天发作上述症状,于是给患者带了24小时动态心电图(holter),holter显示如下(图1)。


图1 A和B分别记录相同导联的心电图,心电图变化与患者胸部症状不一致

两份心电图均与患者症状不对应,A图三个导联QRS波起始可见δ波,T波直立,而B图三个导联QRS波其实未见δ波,aVF、Ⅱ导联T波倒置。根据A图提示患者存在预激综合征,但B图怎么会是这样,难道患者存在严重的心肌缺血?为此,给予患者冠脉造影检查,竟显示冠状动脉轻度狭窄。

患者的症状、心电图动态变化、冠脉造影结果,结合这三者如何给患者做出诊断

经过翻阅文献,答案似乎在向我们招手。

1969年Chatterjee K 等人入选31名三度房室传导阻滞的患者,均行心室起搏,对比起搏前、起搏数天后(非起搏状态)的心电图,发现这样一个现象,起搏数天后(非起搏状态)的心电图显示巨大的倒置T波伴随ST段压低,而这一心室负极状态与心室起搏时状态类似。

就像是在心脏起搏状态下,QRS和ST-T形态和向量均发生了变化,这种变化被心脏记录下来,当处于非起搏状态下,QRS形态和向量恢复正常,但T波去按照记录下来的向量进行负极。随着人们对于该现象的研究,1982年,Rosenbaum MB将这一现象称为“心脏记忆”,也叫“T波记忆”。

心脏记忆最早是在心室起搏的患者心电图中发现,后来人们发现,这种现象不仅出现在上述人群,还可见于预激综合征、暂时的束支传导阻滞和室性心律失常患者。另外,心脏记忆有长短之分,短则数分钟至数小时,长则数周至数月。这与异常心律持续时间成正比,但机制却不同,短期记忆是由于心肌细胞离子通道电流的改变,导致室壁复极离散度的变化。长期记忆则是与离子通道相关蛋白变化有关。

为了进一步验证诊断的准确性,对患者进行电生理检查提示旁路位于室间隔,行射频消融后δ波消失,但T波倒置在2个月后完全恢复(图2),也就证实了心脏记忆的诊断。


图2 射频消融术前(A)、术后1h(B)、术后2月(C)心电图

这是一例证实心脏存在记忆的典型病例,但关于心脏记忆的临床意义还需要进一步研究。

参考文献

1.Chatterjee K, Harris A, Davies G, Leatham A. Electrocardiographic changes subsequent to artificial ventricular depolarization. Br Heart J. 1969;31:770–779.

2.Rosenbaum MB, Blanco HH, Elizari MV, Lázzari JO, Davidenko JM.Electrotonic modulation of the T wave and cardiac memory. Am JCardiol. 1982;50:213–222.

3.Verma N ,?Knight BP . Chest Pain and T-Wave Inversions in a 56-Year-Old Man. Circulation. 2017;135:998-1000.

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    2018-11-02 weiz
  2. [GetPortalCommentsPageByObjectIdResponse(id=1735003, encodeId=09aa1e35003cf, content=<a href='/topic/show?id=5bfc9132840' target=_blank style='color:#2F92EE;'>#记忆功能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=91328, encryptionId=5bfc9132840, topicName=记忆功能)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=31de33864180, createdName=weiz, createdTime=Fri Nov 02 13:04:00 CST 2018, time=2018-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329642, encodeId=53b7329642fc, content=好文献学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b5a62240667, createdName=张新亮1853311252142e2fm, createdTime=Fri Jul 06 06:19:21 CST 2018, time=2018-07-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329427, encodeId=96ca32942e18, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2018/10/17/33f971601e45370716a5daf5304c5753.jpg, createdBy=caf52395744, createdName=白袍甘道夫, createdTime=Thu Jul 05 07:14:35 CST 2018, time=2018-07-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329411, encodeId=cde3329411cf, content=好文献学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b5a62240667, createdName=张新亮1853311252142e2fm, createdTime=Thu Jul 05 06:44:34 CST 2018, time=2018-07-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329340, encodeId=4112329340b9, content=谢谢分享学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM7GibvIBibibnnnvpajk2stlDF5oichYahI6Bia8uxeTBFoPbdoHWebyXf9eal9FNgUF2lNcrwoZicM3BvQ/0, createdBy=a3742066385, createdName=戒馋,懒,贪, createdTime=Wed Jul 04 22:56:11 CST 2018, time=2018-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329333, encodeId=9347329333d1, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=82311653708, createdName=医者仁心5538, createdTime=Wed Jul 04 22:27:43 CST 2018, time=2018-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329323, encodeId=a8de3293233b, content=了解一下.谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Wed Jul 04 22:01:41 CST 2018, time=2018-07-04, status=1, ipAttribution=)]
    2018-07-06 张新亮1853311252142e2fm

    好文献学习了

    0

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    2018-07-05 白袍甘道夫

    学习了

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1735003, encodeId=09aa1e35003cf, content=<a href='/topic/show?id=5bfc9132840' target=_blank style='color:#2F92EE;'>#记忆功能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=91328, encryptionId=5bfc9132840, topicName=记忆功能)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=31de33864180, createdName=weiz, createdTime=Fri Nov 02 13:04:00 CST 2018, time=2018-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329642, encodeId=53b7329642fc, content=好文献学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b5a62240667, createdName=张新亮1853311252142e2fm, createdTime=Fri Jul 06 06:19:21 CST 2018, time=2018-07-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329427, encodeId=96ca32942e18, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2018/10/17/33f971601e45370716a5daf5304c5753.jpg, createdBy=caf52395744, createdName=白袍甘道夫, createdTime=Thu Jul 05 07:14:35 CST 2018, time=2018-07-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329411, encodeId=cde3329411cf, content=好文献学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b5a62240667, createdName=张新亮1853311252142e2fm, createdTime=Thu Jul 05 06:44:34 CST 2018, time=2018-07-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329340, encodeId=4112329340b9, content=谢谢分享学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM7GibvIBibibnnnvpajk2stlDF5oichYahI6Bia8uxeTBFoPbdoHWebyXf9eal9FNgUF2lNcrwoZicM3BvQ/0, createdBy=a3742066385, createdName=戒馋,懒,贪, createdTime=Wed Jul 04 22:56:11 CST 2018, time=2018-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329333, encodeId=9347329333d1, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=82311653708, createdName=医者仁心5538, createdTime=Wed Jul 04 22:27:43 CST 2018, time=2018-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329323, encodeId=a8de3293233b, content=了解一下.谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Wed Jul 04 22:01:41 CST 2018, time=2018-07-04, status=1, ipAttribution=)]
    2018-07-05 张新亮1853311252142e2fm

    好文献学习了

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1735003, encodeId=09aa1e35003cf, content=<a href='/topic/show?id=5bfc9132840' target=_blank style='color:#2F92EE;'>#记忆功能#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=91328, encryptionId=5bfc9132840, topicName=记忆功能)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=31de33864180, createdName=weiz, createdTime=Fri Nov 02 13:04:00 CST 2018, time=2018-11-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329642, encodeId=53b7329642fc, content=好文献学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=47, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b5a62240667, createdName=张新亮1853311252142e2fm, createdTime=Fri Jul 06 06:19:21 CST 2018, time=2018-07-06, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329427, encodeId=96ca32942e18, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2018/10/17/33f971601e45370716a5daf5304c5753.jpg, createdBy=caf52395744, createdName=白袍甘道夫, createdTime=Thu Jul 05 07:14:35 CST 2018, time=2018-07-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329411, encodeId=cde3329411cf, content=好文献学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=b5a62240667, createdName=张新亮1853311252142e2fm, createdTime=Thu Jul 05 06:44:34 CST 2018, time=2018-07-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329340, encodeId=4112329340b9, content=谢谢分享学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/Q3auHgzwzM7GibvIBibibnnnvpajk2stlDF5oichYahI6Bia8uxeTBFoPbdoHWebyXf9eal9FNgUF2lNcrwoZicM3BvQ/0, createdBy=a3742066385, createdName=戒馋,懒,贪, createdTime=Wed Jul 04 22:56:11 CST 2018, time=2018-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329333, encodeId=9347329333d1, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=82311653708, createdName=医者仁心5538, createdTime=Wed Jul 04 22:27:43 CST 2018, time=2018-07-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=329323, encodeId=a8de3293233b, content=了解一下.谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=21, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cdnapi.center.medsci.cn/medsci/head/2019/12/23/2f51002e1349ccda5be11c1eea1e1e60.jpg, createdBy=a22097948, createdName=天地飞扬, createdTime=Wed Jul 04 22:01:41 CST 2018, time=2018-07-04, status=1, ipAttribution=)]
    2018-07-04 戒馋,懒,贪

    谢谢分享学习了

    0

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    2018-07-04 医者仁心5538

    学习了

    0

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    2018-07-04 天地飞扬

    了解一下.谢谢分享!

    0

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