心脏好比人体的动力中枢。心脏强而有力,身体才能健康。而人体心脏工作有一条专业的“电路系统”负责供电!一旦心脏“电路系统”出现问题,就会导致心律失常,造成我们健康出现“大问题”!
马长生主任医师
医院心内科
心脏的“供电系统”
正常的心脏搏动,是由位于右心房上部的心脏“发电厂”——窦房结发出电信号,传导至心房,然后电信号再通过心脏中央的“变压器”——房室结传导至左右心室,使心室收缩,泵送血液至全身。
当心脏“供电系统”其中任何一个环节出现问题,导致电流传导发生问题,就会导致心律失常,出现心动过缓、心跳过快或房颤等危险情况!
正常心跳速率
60-次/分钟
窦性心动过缓
小于60次/分钟
窦房结出现问题时,有可能导致窦性心动过缓。
窦性心动过缓的表现
心跳慢速很难被人体感知,但如果心跳慢,尤其是心跳速率降到每分钟50次以下,会导致血压下降、身体供血不足,出现身体乏力、头晕、眼发黑等症状。
窦性心动过缓的病理原因
心脏疾病、心外疾病(冠心病、窦房结病变)都有可能导致窦性心动过缓发生。
小贴士
专业运动员的心跳速率有可能低于50次/分钟,属于生理原因造成的窦性心动过缓,是正常现象。
心脏起搏器
如果通过测量发现心跳速率低于50次/分钟以下,且对正常的生活、活动产生影响,就需要通过安装心脏起搏器进行治疗。
心跳过快
-次/分钟
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如果心跳达到-次/分钟,心脏就会因为颤动丧失收缩能力,无法维持供血功能,造成患者出现生命危险!
如果心跳总是过快,需要通过导管射频消融手术进行治疗。
导管射频消融手术
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-次/分钟
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心房颤动的表现
房颤时会出现心慌气短、心烦意乱、气喘吁吁等表现。
房颤会导致脑卒中!
发生房颤时,心房会丧失搏动能力,血液流动速度减慢,易在左心耳里沉积形成血栓,心脏恢复搏动后,血栓一旦脱落,就有可能顺着血管进入脑部,导致脑卒中发生。
专家提醒:发生血栓后的3个小时是黄金治疗时间!3个小时之内得不到有效治疗就有可能导致永久性的脑梗死后遗症!
45岁以上的人群,一定要了解家族病史,坚持定期体检,掌握基本的心脏知识,预防心脏疾病!
健康之路
《心脏历险记》(上)
播出时间:9月17日18:38
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