{"countAll":0,"orderType":null,"readLevel":"0","lyTopicReq":{"id":"2012","isDel":0,"createAt":0,"createBy":null,"createName":null,"updateAt":0,"updateBy":null,"updateName":null,"userId":null,"title":null,"content":null,"barId":"2012","topicTypeId":null,"topicThemeId":"1036","readLevel":0,"files":null,"clickNoLikeCount":0,"clickLikeCount":0,"clickCount":0,"score":0,"partCount":0,"replayCount":0,"publishStatus":0,"publishTime":0,"isCream":null,"canReply":0,"shareUrl":null,"foodCouponVal":0,"emailNotice":0,"permission":0,"zlyShare":0,"status":0,"sort":0,"highlight":0,"highlightEffectTime":0,"digest":0,"digestEffectTime":0,"top":0,"topEffectTime":0,"closed":0,"stamp":0,"icon":0,"bgcolor":null,"fontcolor":null,"favtimes":0,"isAdopt":0,"adoptId":null,"sortDate":0,"metaSearch":null,"rn":null},"lyBarModerators":{"list":[],"list4Map":null,"pageBegin":0,"pageSize":8,"pageNumber":0,"totalPage":0,"totalRow":0},"metaSearch":{"description":"为您提供:低血压的预防和处理_直立性低血压的预防等相关信息，让病友在便捷的求医路上不花一分冤枉钱。","keywords":"低血压的预防和处理_直立性低血压的预防","title":"低血压的预防和处理_直立性低血压的预防","channels":null},"data":{"list":[{"id":"6717","isDel":0,"createAt":1509589562718,"createBy":"8b39c578b53311e7a3d800163e04584d","createName":"梅油油","updateAt":1520417434708,"updateBy":"8b39c578b53311e7a3d800163e04584d","updateName":"梅油油","userId":"8b39c578b53311e7a3d800163e04584d","title":"低血压有什么危害　预防方法要知道","content":"<p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\">一般人们听到的高血压比较多，而低血压没怎么接触！<strong>低血压是怎么回事呢</strong>？低血压是指成年人的血压长期低于正常的血压值即是指动脉血压的收缩压（俗称高压）低于９０毫米汞柱，舒张压（俗称低压）低于６０毫米汞。比较常见的有体质性低血压和体位性低血压！</span></p><p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\">&nbsp;</span></p><p style=\"text-indent: 32px; line-height: 200%; text-align: center;\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\"><img src=\"http://01luntan.com/ly_img/uimgs/1520417970979.jpg\" title=\"低血压有什么危害　预防方法要知道\" alt=\"低血压有什么危害　预防方法要知道\" width=\"600\" height=\"372\"/></span></p><p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\"><br/></span></p><p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\">一般低血压的症状可表现为，头晕、头痛，食欲不振、消化不良、脸色苍白等一些轻微症状！另外像直立性眩晕、四肢发冷、心悸、呼吸困难、发音含糊等都是一些比较严重的症状了。出现这些症状的主要原因就是因为血压下降而导致血液循环缓慢，从而就会出现低血压！</span></p><p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\">&nbsp;</span></p><p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\">&nbsp;</span></p><p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\"><span style=\"font-family:宋体\">低血压有什么危害　预防方法要知道</span> </span></p><p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\">&nbsp;</span></p><p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\"><span style=\"font-family:宋体\">低血压患者轻者如无任何症状，无需药物治疗。主要治疗为积极参加体育锻炼，改善体质，增加营养，多喝水，多吃汤，每日食盐略多于常人。重者伴有明显症状，必须给予积极治疗，改善症状，提高生活质量，防止严重危害发生。近年来推出</span>α受体激动剂管通，具有血管张力调节功能，可增加外周动、静脉阻力，防止下肢大量血液郁滞，并能收缩动脉血管，达到提高血压，加大脑、心脏等重要脏器的血液供应，改善低血压的症状，如头晕、乏力、易疲劳等症状。</span></p><p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\">&nbsp;</span></p><p style=\"text-indent:32px;line-height:200%\"><span style=\";font-family:宋体;line-height:200%;font-size:16px\"><span style=\"font-family:宋体\">患有低血压的朋友们，应该注意平常的饮食，要少食多餐，适当增加点盐的摄入量。特别是男性朋友，一定要禁止饮酒和吸烟。对于工作上，要劳逸结合，避免过度劳累。平常生活中，要注意比如晚上睡觉要将头部垫高一些，早上起床时动作不要过猛过快，要缓慢一些，防止血压突然下降，还要站起来时也是如此。尽量不要在闷热或是缺氧的环境中逗留太久！</span> </span></p><p><br/></p>","barId":"2012","topicTypeId":"3","topicThemeId":"1036","readLevel":1,"files":"[]","clickNoLikeCount":0,"clickLikeCount":0,"clickCount":1068,"score":0,"partCount":0,"replayCount":0,"publishStatus":1,"publishTime":1509589562719,"isCream":0,"canReply":0,"shareUrl":null,"foodCouponVal":1,"emailNotice":0,"permission":0,"zlyShare":0,"status":0,"sort":0,"highlight":0,"highlightEffectTime":0,"digest":0,"digestEffectTime":0,"top":0,"topEffectTime":0,"closed":0,"stamp":0,"icon":0,"bgcolor":null,"fontcolor":null,"favtimes":0,"isAdopt":0,"adoptId":null,"sortDate":1509589562719,"metaSearch":null,"rn":0,"barTitle":null,"checkcode":null,"forumUser":{"id":"8b39c578b53311e7a3d800163e04584d","isDel":0,"createAt":1508461864166,"createBy":null,"createName":null,"updateAt":0,"updateBy":null,"updateName":null,"username":"梅油油","password":"kongbaige113","level":0,"nickName":"梅油油","realName":null,"signName":"。。。。。","head":"http://01luntan.com/ly_img/1508466006878.jpg","phone":null,"mobile":null,"wechat":null,"qq":null,"email":"541586403@qq.com","address":null,"identityType":5,"userType":2,"isPhoneBind":0,"status":0,"accountSource":0,"isStrangerMsg":0,"departmentId":null,"departmentName":null,"sex":2,"provinceId":"140000","cityId":"140800","userLevel":0,"modifyNameCount":1},"lyTopicReply":null,"createAtStr":null,"lyBar":null,"lyTopic":null},{"id":"2952","isDel":0,"createAt":1486356947015,"createBy":"6aad1b12ea7211e6a61c00163e04584d","createName":"茉莉花","updateAt":0,"updateBy":null,"updateName":null,"userId":"6aad1b12ea7211e6a61c00163e04584d","title":"勿在餐前服降压药 预防餐后低血压","content":"<p style=\"text-align:center\"><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\"><img src=\"http://01luntan.com/ly_img/uimgs/1486357590734.jpg\" title=\"1486357590734.jpg\" alt=\"001tQ5f5gy6VLAv0jjia8&amp;690.jpg\"/></span></p><p><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　餐后低血压多见于健康老年人，更常见于高血压、糖尿病、帕金森病、心血管病、自主神经功能损害、瘫痪与多系统萎缩、血液透析的老年人，主要表现为，头晕、晕厥、跌倒、心绞痛、无力、恶心、视力模糊、脑缺氧等，多发于餐后30-60分钟，尤其是吃完早餐后，发生率为73%，中餐、晚餐分别是21.6%、5.4%。”&nbsp;</span><br/><span style=\"color:#ffffff\">中国论文网 http://www.xzbu.com/1/view-5292981.htm</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　虽然大部分人可通过体内自身调控系统较快恢复到常态，但也有相当部分老年人餐后血压降低较为明显，持续时间较长，从而导致心脏和大脑缺血缺氧，轻者出现头晕眼花、疲倦乏力、精神萎靡的症状，严重者可诱发心绞痛甚至心肌梗死、短暂性脑缺血发作甚至缺血性脑卒中。因此，餐后低血压对老年人的危害不亚于高血压。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　预防餐后低血压，除了调整药物外，建议老年人做到以下几点：&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　一、养成餐前喝水的习惯，饭前喝350-480ml的水；减少碳水化合物摄入；&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　二、少吃多餐；&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　三、饭后稍微坐一会，或者躺一会儿，餐后低血压与直立性低血压常常合并；&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　四、不要在餐前吃降压药，应在两餐之间吃；吃饭时不要喝酒。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　心绞痛是冠心病急性发作征兆&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　另外老年人需要注意的是冠心病，这是最为常见的心脏疾病，对于冠心病患者来说，除了正规治疗外，急性发作时的急救、自救很重要。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　心绞痛是冠心病急性发作的典型症状，具体表现为胸口感觉像石头压着，或者被抓住一样，觉得气也透不出来，甚至有快要死的感觉。一旦遇到这种情况，建议患者立即停止活动，原地休息，解开衣扣，保证充分氧气供应。同时，立即含服“硝酸甘油”等药物，一般3-5分钟可以缓解，药效可持续20-30分钟，可重复用药2-3次。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　如果疼痛持续半小时不缓解，则应考虑急性心肌梗死可能，要立即到医院就诊。</span></p>","barId":"2012","topicTypeId":"3","topicThemeId":"1036","readLevel":0,"files":"","clickNoLikeCount":0,"clickLikeCount":0,"clickCount":1374,"score":0,"partCount":0,"replayCount":0,"publishStatus":1,"publishTime":1486356947017,"isCream":0,"canReply":0,"shareUrl":null,"foodCouponVal":1,"emailNotice":0,"permission":0,"zlyShare":0,"status":0,"sort":0,"highlight":0,"highlightEffectTime":0,"digest":0,"digestEffectTime":0,"top":0,"topEffectTime":0,"closed":0,"stamp":0,"icon":0,"bgcolor":null,"fontcolor":null,"favtimes":0,"isAdopt":0,"adoptId":null,"sortDate":1486356947015,"metaSearch":null,"rn":0,"barTitle":null,"checkcode":null,"forumUser":{"id":"6aad1b12ea7211e6a61c00163e04584d","isDel":0,"createAt":1486168781822,"createBy":"b1a5ca4ddfad11e6a61c00163e04584d","createName":"小海螺","updateAt":0,"updateBy":null,"updateName":null,"username":"茉莉花","password":"888888","level":0,"nickName":"茉莉花","realName":null,"signName":"随遇而安","head":"http://01luntan.com/ly_img/1486169681471.jpg","phone":null,"mobile":null,"wechat":null,"qq":null,"email":null,"address":null,"identityType":1,"userType":2,"isPhoneBind":0,"status":0,"accountSource":0,"isStrangerMsg":0,"departmentId":null,"departmentName":null,"sex":2,"provinceId":"140000","cityId":"140500","userLevel":0,"modifyNameCount":1},"lyTopicReply":null,"createAtStr":null,"lyBar":null,"lyTopic":null},{"id":"2489","isDel":0,"createAt":1486356895150,"createBy":"6aad1b12ea7211e6a61c00163e04584d","createName":"茉莉花","updateAt":0,"updateBy":null,"updateName":null,"userId":"6aad1b12ea7211e6a61c00163e04584d","title":"针对性防治“餐后低血压”","content":"<p style=\"text-align:center\"><img src=\"http://01luntan.com/ly_img/uimgs/1486356929011.jpg\" title=\"1486356929011.jpg\" alt=\"u=2144341300,4096163462&amp;fm=23&amp;gp=0.jpg\"/></p><p><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　低血压是指动脉收缩压低于90毫米汞柱，舒张压低于60毫米汞柱。成人正常血压低于90/60毫米汞柱，老年人低于100/70毫米汞柱，称为低血压。&nbsp;</span><br/><span style=\"color:#ffffff\">中国论文网 http://www.xzbu.com/6/view-4549546.htm</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　引起低血压的原因很多，令人感到困惑的是有一部分老年人吃饭后会发生低血压。所谓“餐后低血压”，是指进餐后2小时以内血压下降水平超过20毫米汞柱；或餐前收缩压超过100毫米汞柱，而餐后收缩压小于90毫米汞柱。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　对餐后低血压的诊断一般通过测定餐前血压和餐后2小时内血压（每15～30分钟测1次，以最低血压值作为餐后血压）来确诊。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　餐后低血压是老年人的常见疾病，比体位性低血压更常见，多见于心血管疾病、高血压病、截瘫、糖尿病、帕金森病、多系统器官功能衰退以及生活不能自理的老年人，也可见于健康老人。其临床表现因不同人群而有所不同：健康老年人先出现症状，然后测到血压降低；自主神经功能障碍的患者，只有血压下降较大幅度时才出现症状；高血压患者一般血压下降即出现临床表现。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　引起餐后低血压的原因主要是由于餐后内脏血流量增加及老年人压力反射反应的迟钝。研究表明，人在进餐后迷走神经兴奋，胃、肠、胰腺等组织通过自分泌、旁分泌而产生一些具有扩血管作用的体液因子，导致门静脉、肠系膜血管明显扩张，内脏血流量增加。大量的血液流入胃肠道，回心血量减少，当心率和外周血管阻力未相应增加时，就会导致餐后低血压。对于年轻人来讲，其血压调节能力强，餐后血压下降的幅度小，一般不会出现什么不适的症状。对于老年人来说，由于压力感受器易发生动脉粥样硬化，其敏感性降低，对餐后血压下降不能迅速作出反应。老年人尤其是自主神经功能损害者还存在交感神经功能代偿不全，心率加快和血管收缩不明显，对餐后血压下降不能进行有效代偿而发生一系列的低血压症状。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　针对性的防范措施&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　1饮食疗法 低碳水化物饮食，少量多餐，因为高碳水化物尤其是葡萄糖容易诱发餐后低血压。在医生指导下，可适当增加钠盐和水分的摄入，保证充足的血容量。避免在进餐时饮酒，避免在血液透析时进食。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　2适量运动 餐后适当散步可通过增加心率和心排血量来维持正常血压，达到治疗餐后低血压的目的，但要避免过量运动。餐后若出现低血压症状，应采取平卧位。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　3治疗基础疾病 虽然降压药有可能诱发餐后低血压，但有效控制高血压反而能改善餐后低血压。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　高血压患者服用利尿剂时餐后血压下降水平明显高于非利尿剂，对于此类患者应选用非利尿剂降压药；&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　若确定是降压药诱发餐后低血压者，则应在两餐之间服用降压药；&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　冠心病患者应用硝酸酯类，或心力衰竭时用利尿剂可能加重餐后低血压，如无绝对指征不宜用此类药物；&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　帕金森病患者餐后血压下降明显，与抗帕金森病药物本身具有降压作用有关；&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　糖尿病患者在进行药物治疗时，可以配合使用一些α-糖苷酶抑制剂如拜唐苹等，以利于预防餐后低血压的发生。</span></p>","barId":"2012","topicTypeId":"3","topicThemeId":"1036","readLevel":0,"files":"","clickNoLikeCount":0,"clickLikeCount":0,"clickCount":1642,"score":0,"partCount":0,"replayCount":0,"publishStatus":1,"publishTime":1486356895152,"isCream":0,"canReply":0,"shareUrl":null,"foodCouponVal":1,"emailNotice":0,"permission":0,"zlyShare":0,"status":0,"sort":0,"highlight":0,"highlightEffectTime":0,"digest":0,"digestEffectTime":0,"top":0,"topEffectTime":0,"closed":0,"stamp":0,"icon":0,"bgcolor":null,"fontcolor":null,"favtimes":0,"isAdopt":0,"adoptId":null,"sortDate":1486356895150,"metaSearch":null,"rn":0,"barTitle":null,"checkcode":null,"forumUser":{"id":"6aad1b12ea7211e6a61c00163e04584d","isDel":0,"createAt":1486168781822,"createBy":"b1a5ca4ddfad11e6a61c00163e04584d","createName":"小海螺","updateAt":0,"updateBy":null,"updateName":null,"username":"茉莉花","password":"888888","level":0,"nickName":"茉莉花","realName":null,"signName":"随遇而安","head":"http://01luntan.com/ly_img/1486169681471.jpg","phone":null,"mobile":null,"wechat":null,"qq":null,"email":null,"address":null,"identityType":1,"userType":2,"isPhoneBind":0,"status":0,"accountSource":0,"isStrangerMsg":0,"departmentId":null,"departmentName":null,"sex":2,"provinceId":"140000","cityId":"140500","userLevel":0,"modifyNameCount":1},"lyTopicReply":null,"createAtStr":null,"lyBar":null,"lyTopic":null},{"id":"1954","isDel":0,"createAt":1486356833716,"createBy":"6aad1b12ea7211e6a61c00163e04584d","createName":"茉莉花","updateAt":0,"updateBy":null,"updateName":null,"userId":"6aad1b12ea7211e6a61c00163e04584d","title":"老年人长期低血压会引起痴呆吗","content":"<p style=\"text-align: center;\"><img title=\"1486357510299.jpg\" src=\"http://01luntan.com/ly_img/uimgs/1486357510299.jpg\" alt=\"1411565409_39513.jpg\" /></p>\n<p><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　随着高血压知识的普及以及人们对健康状况的关注，越来越多的中老年人重视治疗高血压。但是，对于低血压却普遍比较疏忽。&nbsp;</span><br /><span style=\"color: #ffffff;\">中国论文网 http://www.xzbu.com/6/view-2783961.htm</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　低血压？？痴呆症？&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　张老伯今年77岁，一直为自己没什么大病而庆幸。但子女发现他近来记忆力减退明显，一件事情说过了又忘记，反复问。经常为拿一样东西走进房间，站立许久又想不起要干什么。经医院检查，诊断为早期认知功能障碍。大夫追查病史发现，张老伯长期处于低血压状况，判断现在的认知状况与长期低血压有关。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　张老伯与家人感到疑惑，人人都知道随着年龄的增长老年人血压会慢慢升高，高血压病严重危害老年人的身体健康，那么血压低也不好吗？&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　其实，老年人不仅要重视高血压，也要防止低血压。低血压能引起脑供血不足，长期脑供血不足可导致脑细胞损害，加速脑萎缩，影响脑功能，导致痴呆。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　低血压可能是一过性的，也可能是长期性的。低血压可分为急性和慢性。平时我们讨论的低血压大多为慢性低血压。据统计，慢性低血压发病率为4%左右，老年人群中可高达10%。常见原因有：&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　1.体质性低血压一般认为这与遗传和体质瘦弱无关，多见于20~50岁的妇女和老人，轻者可无任何症状，重者出现精神疲备、头晕、头痛，甚至昏厥。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　2.直立性低血压直立性低血压是患者从卧位改变到直立位时，或长时间站立时出现血压突然下降超过20毫米汞柱，并伴有明显症状，如头昏、头晕、视力模糊、乏力、恶心、认知功能障碍、心悸、颈脊部疼痛等。多种疾病可引起直立性低血压，如多系统萎缩、糖尿病、帕金森综合征，或其他情况如久病卧床，体质虚弱的老年人。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　3.继发性低血压由某些疾病或药物引起的低血压，如脊髓空洞症、风湿性心脏病，服用降压药、抗抑郁药等，以及慢性营养不良和血液透析等。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　4.餐后低血压餐后发生的低血压。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　5.排尿性低血压排尿中或排尿后突然晕倒，神志不清，发作后2~3分钟恢复正常。多因夜间膀胱蓄满后突然排空使腹腔压力骤减，静脉扩张，回心血量减少，血压下降所致。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　6.药物性低血压老年人因病服用降压药如甲基多巴、胍乙啶、优降宁、双氢克尿噻、速尿，安定类、氯丙嗪、奋乃静，抗心绞痛药如消心痛、硝酸甘油等也可引起低血压。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　在季节更替时，老年人尤其要注意低血压的发生。因为老年人存在不同程度的器官退行性病变，体内各种血压调节机制如压力感受器等敏感性均降低，植物神经对血管的调节机制失常，在较快速的体位变化时，老年人由于动脉硬化血管的弹性差，心脏搏出量又跟不上，易导致低血压的发生。由于大脑对缺血缺氧极为敏感，低血压引起脑组织的缺血性损害极为突出，患者常感头晕、头痛、眼前发黑、健忘、思维迟钝，容易发生缺血性脑卒中。长期低血压，造成脑神经缺血缺氧而损害，也容易导致老年痴呆。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　所以，防治痴呆必须从防治其危险因素着手，其中老年性低血压的防治不容忽略。如患有贫血、慢性胃出血等疾病时要及时诊治。如果患的是体位性低血压，在起立或起床时动作要尽量缓慢，不可操之过急。每变换一次体位，要休息片刻。体质虚弱者宜加强营养。高血压的老年患者，要注意监测血压的变化，及时合理地调整降压药的种类和剂量，以防止矫枉过正而导致低血压的发生。在锻炼活动的时候，要注意适度，不要过度运动造成大汗淋漓，脱水状态易导致低血压。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　（作者每周二下午有专家门诊）&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　小贴士：何谓低血压&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　医学上将收缩压低于90毫米汞柱，舒张压低于60毫米汞柱称为低血压。低血压分为生理性和病理性两大类。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　生理性低血压除动脉血压低于上述值外，无任何自觉症状。经长期随访，人体各系统器官无缺血和缺氧等异常，也不影响寿命。生理性低血压状态常见于年轻妇女，尤其是体型瘦长者，经常从事较大运动量的运动员和重体力劳动者也不少见。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　病理性低血压（低血压病）除动脉血压低于正常外，常伴有全身乏力、头晕、易疲倦、出汗、心悸等症状，当长时间站立或者由卧位（或坐位、蹲位）转为立位时，上述症状更为明显，甚至昏倒。低血压病又分为急性低血压和慢性低血压，急性低血压多见于各种休克和急性心血管障碍。慢性低血压可有遗传倾向，也可继发于某些神经性疾病、心血管疾病、慢性营养不良、内分泌功能紊乱、传染性疾病恢复期以及使用某些降压药时，常伴有相应的不适和检查异常。年轻女性仅动脉血压低于正常，而无任何自觉症状并不属于病态。&nbsp;</span></p>","barId":"2012","topicTypeId":"3","topicThemeId":"1036","readLevel":0,"files":"","clickNoLikeCount":0,"clickLikeCount":0,"clickCount":1418,"score":0,"partCount":0,"replayCount":0,"publishStatus":1,"publishTime":1486356833717,"isCream":0,"canReply":0,"shareUrl":null,"foodCouponVal":1,"emailNotice":0,"permission":0,"zlyShare":0,"status":0,"sort":0,"highlight":0,"highlightEffectTime":0,"digest":0,"digestEffectTime":0,"top":0,"topEffectTime":0,"closed":0,"stamp":0,"icon":0,"bgcolor":null,"fontcolor":null,"favtimes":0,"isAdopt":0,"adoptId":null,"sortDate":1486356833716,"metaSearch":null,"rn":0,"barTitle":null,"checkcode":null,"forumUser":{"id":"6aad1b12ea7211e6a61c00163e04584d","isDel":0,"createAt":1486168781822,"createBy":"b1a5ca4ddfad11e6a61c00163e04584d","createName":"小海螺","updateAt":0,"updateBy":null,"updateName":null,"username":"茉莉花","password":"888888","level":0,"nickName":"茉莉花","realName":null,"signName":"随遇而安","head":"http://01luntan.com/ly_img/1486169681471.jpg","phone":null,"mobile":null,"wechat":null,"qq":null,"email":null,"address":null,"identityType":1,"userType":2,"isPhoneBind":0,"status":0,"accountSource":0,"isStrangerMsg":0,"departmentId":null,"departmentName":null,"sex":2,"provinceId":"140000","cityId":"140500","userLevel":0,"modifyNameCount":1},"lyTopicReply":null,"createAtStr":null,"lyBar":null,"lyTopic":null},{"id":"1456","isDel":0,"createAt":1486356776588,"createBy":"6aad1b12ea7211e6a61c00163e04584d","createName":"茉莉花","updateAt":0,"updateBy":null,"updateName":null,"userId":"6aad1b12ea7211e6a61c00163e04584d","title":"老年人餐后低血压原因","content":"<p><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　 我父亲今年６５岁。他曾多次在饭后出现头晕、迷糊等症状。有几次他还险些摔倒。在他发病时，我们陪他到医院去检查，发现他的血压低。但平时父亲的血压是偏高的。据我们了解，人在饥饿时应该血压低，吃过饭之后应该是能量充足，老年人餐后低血压原因是什么？这种病应该怎样防治？&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　内蒙 王莹&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　王莹女士：&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　 在我们的专科门诊中，类似您父亲这样病情的患者并不少见。这种现象在临床上被称为老年人餐后低血压。其实，早在上个世纪七十年代，老年人餐后低血压现象就已经受到广泛的关注。其临床表现是：有的老年人在餐后２小时之内血压会下降２０毫米汞柱以上；有的在餐前高压超过１００毫米汞柱，而餐后２小时之内则下降到９０毫米汞柱以下；有的在餐后２小时之内出现头昏、晕厥、心悸等低血压症状。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　 研究表明：人在进餐后，由于消化食物的需要，人体内的血液会重新分配。大量的血液流入胃肠道，致使心血管系统的血管阻力减小，从而导致人的血压下降。对于年轻人来讲，其血压调节能力强，所以餐后血压下降的幅度小，一般不会出现什么不适的症状。而对于老年人来说，特别是对于患有糖尿病、冠心病和高血压病的老年人来说，因其血压调节能力低，加之他们中的很多人又患有植物神经功能失调症，所以在进餐后，他们的血管收缩能力会下降，血压也就跟着下降，从而产生了一系列的低血压症状。有的在餐后２小时内会发生头晕、晕厥、心绞痛、乏力、恶心、视物模糊或语言不清等。老年人如果有了这种情况而不加注意，很容易造成外伤或导致心脑血管疾病的发作。而当其血压恢复正常后，这些症状也就随之消失了。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　 由于许多疾病可造成老年人头晕、晕厥、乏力等症状。因此老年人餐后低血压所引起的不适症状，极易被当作是其他疾病所致，而被误诊或漏诊。所以老年人进餐后如有上述不适症状应考虑此病的发生，并要注意其餐前、餐后的血压变化，以便及早明确诊断，采取相应的防治措施。那么，防治餐后低血压有哪些措施呢？&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　 １．限制进餐量。有餐后低血压症状的老年人可采取少吃多餐的办法进食。这样既能防止餐后低血压的发生，又能保证摄取充足的营养。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　 ２．食物要多样化。经观察发现，单纯吃碳水化合物如米、面、甜食的人易发生餐后低血压。而适当吃一些脂肪含量高的食物，则可减少此病的发生。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　 ３．餐后若出现低血压症状时，应采取平卧位。餐后散步可减少餐后低血压的发生。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　 ４．易发生餐后低血压的老年人，每日应摄入足够量的水分，且不可严格限制盐的摄入量。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　 ５．糖尿病患者在进行药物治疗时，可以配合使用一些&alpha;―糖苷酶抑制剂如拜糖平等，这样有利于预防餐后低血压的发生。&nbsp;</span><br /><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: #ffffff;\">　　 ６．不宜随意服用抑制交感神经作用的药物如心得安、倍他乐克、康心、氨酰心安等。</span></p>","barId":"2012","topicTypeId":"3","topicThemeId":"1036","readLevel":0,"files":"","clickNoLikeCount":0,"clickLikeCount":0,"clickCount":1524,"score":0,"partCount":0,"replayCount":0,"publishStatus":1,"publishTime":1486356776589,"isCream":0,"canReply":0,"shareUrl":null,"foodCouponVal":1,"emailNotice":0,"permission":0,"zlyShare":0,"status":0,"sort":0,"highlight":0,"highlightEffectTime":0,"digest":0,"digestEffectTime":0,"top":0,"topEffectTime":0,"closed":0,"stamp":0,"icon":0,"bgcolor":null,"fontcolor":null,"favtimes":0,"isAdopt":0,"adoptId":null,"sortDate":1486356776588,"metaSearch":null,"rn":0,"barTitle":null,"checkcode":null,"forumUser":{"id":"6aad1b12ea7211e6a61c00163e04584d","isDel":0,"createAt":1486168781822,"createBy":"b1a5ca4ddfad11e6a61c00163e04584d","createName":"小海螺","updateAt":0,"updateBy":null,"updateName":null,"username":"茉莉花","password":"888888","level":0,"nickName":"茉莉花","realName":null,"signName":"随遇而安","head":"http://01luntan.com/ly_img/1486169681471.jpg","phone":null,"mobile":null,"wechat":null,"qq":null,"email":null,"address":null,"identityType":1,"userType":2,"isPhoneBind":0,"status":0,"accountSource":0,"isStrangerMsg":0,"departmentId":null,"departmentName":null,"sex":2,"provinceId":"140000","cityId":"140500","userLevel":0,"modifyNameCount":1},"lyTopicReply":null,"createAtStr":null,"lyBar":null,"lyTopic":null},{"id":"4475","isDel":0,"createAt":1486356692409,"createBy":"6aad1b12ea7211e6a61c00163e04584d","createName":"茉莉花","updateAt":0,"updateBy":null,"updateName":null,"userId":"6aad1b12ea7211e6a61c00163e04584d","title":"低血压老年人如何保养","content":"<p style=\"text-align:center\"><img src=\"http://01luntan.com/ly_img/uimgs/1486356934484.jpg\" title=\"1486356934484.jpg\" alt=\"001tQ5f5gy6VLAv0jjia8&amp;690.jpg\"/></p><p><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　患高血压的老年人多，63岁的我多年来却有低血压，也一直没怎么注意它，但我近期头常发晕，记忆力也越来越差，一天觉得好疲惫。不知低血压有没有什么治疗的方法？平时应该如何保养，才能恢复正常血压？&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　读者王桂芬&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　王桂芬读者：&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　您好！现从以下三个方面回答您的问题。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　1. 老年人的高血压一部分是由以前青壮年时期的高血压延续而来，大部分是由于大动脉内膜和中层变性，导致动脉弹性减退，顺应性下降而致。但目前的研究表明，老年人的血压升高并不是增龄过程中的自然生理改变，年龄的增长不一定伴有血压的显著升高，而社会环境因素包括膳食、精神紧张、吸烟、肥胖、过量饮酒等则可能造成老年人血压升高。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　2. 引起老年人低血压的原因很多，最常见的是病后身体虚弱、心脏疾病、慢性肺部疾病、长期卧床引起营养不良，以及平素体质瘦弱、家族遗传等，可分为原发性（体质性）、继发性或体位性低血压。老年低血压的诊断标准尚不十分统一，大多数学者认为以血压≤100/60mmHg为准较适宜。需要注意的是，有些人，特别是女性老年人，收缩压常在100～85mmHg，而一般活动时毫无症状或仅有乏力、易倦、轻微头昏，这种血压偏低多属非病理现象。资料显示，这类老人往往比血压正常者还长寿。所以，对低血压及其程度的判断要结合临床，全面分析，综合评估，不可仅仅被血压数值所左右。此外，体外的动脉压间接测定数值往往比动脉内直接测压数值为低，且血压越低者，误差越大。因此，对低血压病人，最好定人、定时、定部位、定体位，正规、认真测压，以求尽量避免再增加人为的误差。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　有低血压老年人应注意以下几点：（1）无症状低血压由于脑血流无明显减少，多不需要治疗，但应鼓励患者起床散步，避免长期卧床休息或久坐，应当纠正内科疾病，采取增加血容量，改善血循环及增强心脏功能的措施，已有脱水不宜使用利尿剂，应该养成良好的大便习惯避免排便时用力过度。（2）缓慢改变体位和姿势。避免突然起床或者迅速变换体位，并在每次改变体位时应休息2～3分钟，以使体位代偿反应适应于每次体位的变化。在早晨起床站立或开始走路之前，首先应坐在床上几分钟，在去浴室厕所时，因体位性低血压导致神志模糊或意识丧失而跌倒，可发生骨折及其他伤害，使用床边便桶或尿壶可以预防意外发生。（3）避免过度饱餐（尤其是避免大量进食糖水、稀饭、米饭、藕粉、地瓜淀粉及其制品等容易吸收的碳水化合物），少吃多餐，适当摄取钠盐，适量饮水，保持正常的血容量。（4）洗澡水温不宜过高，洗澡时间不应过长。（5）酷暑时减少外出，减少大量出汗。（6）穿弹力长筒袜，增加回心血量。（7）尽量避免不是非用不可的影响血压的药物。（8）注意营养，坚持适当运动。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　无症状性低血压不需要特殊处理，可通过适当参加体力活动来增强体质，提高对血压变化的调节能力，也可服八珍汤、西洋参和黄芪、当归等补益气血的中药。症状性低血压的处理包括：（1）一般措施（见上述注意事项）。（2）药物治疗包括病因治疗和对症治疗，应到医院进行相关检查后决定。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; font-size: 14px; line-height: 25.2px; background-color: rgb(255, 255, 255);\">　　3. 头晕、记忆力下降、疲惫是低血压的常见表现，也可能是其他疾病的症状，故建议到医院就诊明确。&nbsp;</span><br/><span style=\"font-family: Arial, 宋体; 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