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是急性心包炎最主要症状，多见于急性特发性心包炎及感染性心包炎的纤维蛋白渗出阶段。疼痛的性质和部位是易变的，常位于胸骨后或心前区，可放射至颈部和背部，呈锐痛，偶可位于上腹部，类似“急腹症”；或与心肌梗死缺血性疼痛相似，呈钝痛或压榨性痛并放射至左上肢；或随每次心脏跳动而发生刺痛。疼痛可因心包和胸膜炎症受累两个因素引起，也可能与心包腔积液时心包牵张因素有关。疼痛多在卧位、咳嗽、深吸气时加重，前倾位时减轻。</p><p>　　<strong>2.呼吸困难</strong> 是心包渗液时最突出的症状，为避免心包和胸膜疼痛而产生呼吸变浅变速。</p><p>　　呼吸困难也可因发热、大量心包积液导致心腔压塞、邻近支气管、肺组织受压而加重，表现为面色苍白、烦躁不安、胸闷、大汗淋漓等。患者常采取坐位，身体前倾，使心包积液向下、向前移位以减轻其对心脏及邻近脏器的压迫，从而缓解症状。</p><p>　　<strong>3.全身症状</strong> 可伴有潜在的全身疾病如结核、肿瘤、尿毒症所致的咳嗽、咳痰、贫血、体重下降等症状。</p><p><strong>　　（二）体征</strong></p><p><strong>　　1.心包摩擦音</strong></p><p>　　为急性纤维蛋白性心包炎特异性体征，炎症导致壁层与脏层心包变得粗糙，在心脏活动时相互摩擦产生的声音，似皮革摩擦呈搔刮样、粗糙的高频声音。心包摩擦音的特点是瞬息可变，通常使用隔膜性胸件在胸骨左缘3一4肋间、胸骨下段和剑突附近易听到。其强度受呼吸和体位影响，深吸气或前倾坐位摩擦音增强。当心包内出现渗液，将两层心包完全分开时，心包摩擦音消失；如两层心包有部分粘连，虽有心包积液，有时仍可闻及摩擦音。心包摩擦音应与胸膜摩擦音或听诊器胸件未压紧皮肤所产生的嘎吱音相鉴别；而单相心包摩擦音需与三尖瓣或二尖瓣反流性收缩期杂音相鉴别。</p><p>　　<strong>2.心包积液</strong></p><p>　　症状的出现与积液的量和速度有关，而与积液性质无关。当心包积液达200-300ml以上或积液迅速积聚时出现下列体征：①心脏体征：心脏搏动减弱或消失，心浊音界向两侧扩大，心音轻而远，心率快，少数人在胸骨左缘3-4肋间可听到舒张早期额外音（心包叩击音），此音在第二心音后0.1-0.13s，高调呈拍击样，是由于心室舒张时受心包积液的限制，血液突然终止形成旋涡和冲击心室壁产生震动所致。②左肺受压迫征：大量心包积液时，心脏向左后移位，压迫左肺，引起左肺下叶不张，在左肩胛下角区出现肺实变表现，称之为ewart征。③心脏压塞征：大量心包积液或积液迅速积聚，即使积液仅150～200ml，引起心包内压力超过20～30mmhg时即可产生急性心包压塞征，表现为心动过速、心血排量下降、发绀、呼吸困难、收缩压下降甚至休克。如积液为缓慢积聚过程，也可产生慢性心脏压塞征，表现为静脉压显著升高，颈静脉怒张和吸气时颈静脉扩张，称kussmaul征，常伴有肝大、腹水和下肢浮肿。由于动脉收缩压降低，舒张压变化不大而表现脉搏细弱、脉压减小，出现奇脉。</p><p><br/></p>","barId":"1688","topicTypeId":"2","topicThemeId":"1016","readLevel":0,"files":"","clickNoLikeCount":0,"clickLikeCount":0,"clickCount":1644,"score":0,"partCount":0,"replayCount":0,"publishStatus":1,"publishTime":1486703055300,"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":1486703055298,"metaSearch":null,"rn":0,"barTitle":null,"checkcode":null,"forumUser":{"id":"b1a5ca4ddfad11e6a61c00163e04584d","isDel":0,"createAt":1484984778320,"createBy":null,"createName":null,"updateAt":0,"updateBy":null,"updateName":null,"username":"小海螺","password":"yiren2921","level":0,"nickName":"小海螺78","realName":null,"signName":"开心每一天","head":"http://01luntan.com/ly_img/1484985295689.jpg","phone":null,"mobile":null,"wechat":null,"qq":null,"email":"2276635444@qq.com","address":null,"identityType":6,"userType":2,"isPhoneBind":0,"status":0,"accountSource":0,"isStrangerMsg":0,"departmentId":null,"departmentName":null,"sex":1,"provinceId":"110000","cityId":"110108","userLevel":0,"modifyNameCount":1},"lyTopicReply":null,"createAtStr":null,"lyBar":null,"lyTopic":null},{"id":"3869","isDel":0,"createAt":1486702797550,"createBy":"b1a5ca4ddfad11e6a61c00163e04584d","createName":"小海螺","updateAt":0,"updateBy":null,"updateName":null,"userId":"b1a5ca4ddfad11e6a61c00163e04584d","title":"单心室的鉴别诊断和并发症？","content":"<p>　　<strong>单心室容易与哪些疾病混淆？</strong></p><p>　　单心室诊断并不困难，而手术前病理解剖学诊断则不很容易。因此，在鉴别诊断上主要集中在对不同类型单心室的鉴别上。anderson将单心室分为三种类型：</p><p>　　①左心室型：以左心室形态主，右心室仅为一小残腔;</p><p>　　②右心室型：以右心室形态为主，左心室仅为残腔，临床上很少见;</p><p>　　③中间型：左、右心室形态并存而室间隔缺如。</p><p>　　根据心房是否正位、有否大动脉错位、肺动脉狭窄等又分成若干亚型。单心室常合并其他心内畸形。临床上以左心室型单心室最多见，约占80%。左心室型单心室常伴有左侧大动脉错位，右侧房室瓣为二尖瓣，左侧房室瓣为三尖瓣，部分患者在左、右房室瓣之间可见一条肉柱。如肺动脉起源于右侧房室瓣前上方，其解剖结构最利于做分隔手术。左心室型单心室如伴有右侧大动脉错位，常合并肺动脉狭窄，不易做分隔手术。</p><p>　　<strong>单心室可以并发哪些疾病？</strong></p><p>　　单心室合并其他先天性心脏畸形，以肺动脉瓣狭窄和房间隔缺损最为常见，分别见于51%和27%的病人；也可合并冠状动脉畸形；传导系统位置异常且多变，在有一个出口腔室和那些房-室和心室-大动脉相互关系不一致（左袢）的病人，房室结呈异常前位，在无出口腔室的病人，房室结的位置捉摸不定，可呈后位、侧位或前位；当出口腔室为左向前位时，总传导束环绕肺动脉瓣下流出道的前方，贴近肺动脉瓣附着处；若出口腔室呈右向和前位，则传导束位于肺动脉瓣环的下后方；在无出口腔室者，传导束位于心室体的后方。</p><p><br/></p>","barId":"1688","topicTypeId":"2","topicThemeId":"1016","readLevel":0,"files":"","clickNoLikeCount":0,"clickLikeCount":0,"clickCount":2054,"score":0,"partCount":0,"replayCount":0,"publishStatus":1,"publishTime":1486702797552,"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":1486702797550,"metaSearch":null,"rn":0,"barTitle":null,"checkcode":null,"forumUser":{"id":"b1a5ca4ddfad11e6a61c00163e04584d","isDel":0,"createAt":1484984778320,"createBy":null,"createName":null,"updateAt":0,"updateBy":null,"updateName":null,"username":"小海螺","password":"yiren2921","level":0,"nickName":"小海螺78","realName":null,"signName":"开心每一天","head":"http://01luntan.com/ly_img/1484985295689.jpg","phone":null,"mobile":null,"wechat":null,"qq":null,"email":"2276635444@qq.com","address":null,"identityType":6,"userType":2,"isPhoneBind":0,"status":0,"accountSource":0,"isStrangerMsg":0,"departmentId":null,"departmentName":null,"sex":1,"provinceId":"110000","cityId":"110108","userLevel":0,"modifyNameCount":1},"lyTopicReply":null,"createAtStr":null,"lyBar":null,"lyTopic":null},{"id":"2837","isDel":0,"createAt":1486702678358,"createBy":"b1a5ca4ddfad11e6a61c00163e04584d","createName":"小海螺","updateAt":0,"updateBy":null,"updateName":null,"userId":"b1a5ca4ddfad11e6a61c00163e04584d","title":"单心房临床症状","content":"<p>【临床表现】 \n<br/>　　症状和体征与巨大的房间隔缺损和房室管畸形相似。常见哭吵时气急、紫绀。早期出现心力衰竭，逐渐出现紫绀和杵状指、趾，在肺动脉瓣区有喷射性杂音，第2音亢进固定性分裂，心尖区有二尖瓣关闭不全的收缩期杂音。 \n<br/>　　【辅助检查】 <br/>　　胸片：显示肺血管影纹增多，心影扩大，以右房、右室扩大为主，肺动脉段隆起。 \n<br/>　　心电图检查：轴心左偏，常出现房室交界性节律，大致与房室管畸形相似。 \n<br/>　　切面切超声心动图检查：左、右心房之间，房间隔回声反射消失，四腔切面象上正常情况下，由房间隔、室间隔、二尖瓣、三尖瓣形成的十字形回声反射改变为t字形回声反射。 \n<br/>　　右心导管检查：导管极易从右心房进入左心房或导管径路与房室管畸形相似。实际上单心房为混合血液，故心房、心室和两根大动脉的血氧饱和度大致相似。 \n<br/>　　选择性心房造影：可显示单心房，左心室造影可显示二尖瓣返流。 <br/>　　【鉴别诊断】 \n<br/>　　单心房需与室间隔缺损、完全性肺静脉异常回流、完全性大动脉错位、三尖瓣闭锁和完全性房室管畸形等鉴别。单心房临床症状和体征类似大型房间隔缺损或房室管畸形，但症状出现早而重，有紫绀但肺血流量增多，心房水平有大量左向右分流但无明显肺动脉高压的证据为其特征。 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