{"type5":[],"type4":[{"id":"12553","isDel":0,"createAt":1519376772262,"createBy":"8b39c578b53311e7a3d800163e04584d","createName":"梅油油","updateAt":0,"updateBy":null,"updateName":null,"userId":"8b39c578b53311e7a3d800163e04584d","title":"专家为您推荐主动脉瓣狭窄饮食保健","content":"


找良医网向您详细讲解主动脉瓣狭窄饮食保健，主动脉瓣狭窄的食疗方法。得了主动脉瓣狭窄吃什么好，同时又不能吃什么呢？


\"专家为您推荐主动脉瓣狭窄饮食保健\"

 

1、高脂肪饮食

 

高脂肪饮食非常不助于消化，是会加大心脏负担，而且也会引起心律失常等。

 

2、高盐饮食

 

风湿性心脏病容易引发水肿，所以必须限制食盐的摄入量，避免水肿加重，防止心脏负担加大，风心病病患每天食盐的摄入量在1-5克之间比较合适。而且应少吃含钠丰富的食品例如香蕉等。

 

3、饮水过多

 

像大量的饮水、或茶、汤、果汁、或其他饮料等，会立刻增加血容量，随之增加心脏负担。所以进食饮料不得过多，最好一次不超过500毫升。如果要多喝水时，分成几次喝，每次少一点，相隔时间更长一点。

 

4、刺激性食饮和兴奋性药物

 

辣椒、生姜、胡椒、烟酒还有大量的饮浓茶，服咖啡因、苯丙胺等兴奋药物，都会使血压升高，神经系统的兴奋性加重，引发心率加快，严重诱发心律紊乱，从而加大心脏负担，并且使心肌瓣膜功能受到伤害。在风心病患者心功能不佳时，一定要注意。


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专家称，或许右心室肌肉增厚（心肌肥厚）本身并不是问题，基本表明存在肺动脉瓣狭窄。那么肺动脉瓣狭窄吃什么好？

 

 \"专家为你讲解肺动脉瓣狭窄吃什么好\"


1多吃苹果。也可以把新鲜的苹果窄成苹果汁，每天一小杯。苹果汁中的抗氧化剂有助于心脏的健康运转，经常喝可减少心脏病的发病率。

 

2多喝牛奶。早晚一杯，牛奶对于补充人体的营养是很有效的，牛奶中含有丰富蛋白质，可以增强人体的物质能量。

 

3还要多吃大豆，红薯，山楂，茶叶，海鱼，蜜橘生姜，大蒜，茄子，木耳，燕麦。

 

患儿宜少食多餐，但是需要保证足够的蛋白质和维生素的添加，补充饮食尽可能多样化，容易消化。

 

还要保持大便顺畅，若大便干燥、排便困难时，过分用力也会增加腹压，加重心脏的负担，并且会产生严重后果。

 

居室内空气保持流通，患儿要减少到人多拥挤的公共场所停留，以避免呼吸道感染的机会。要随着天气冷暖及时增减衣服，密切注意天气并且随时预防感冒。

 

找良医网温馨提示：要定期去医院心脏心科门诊随访，并且严格遵照医嘱服药，特别是强心、利尿药，因为其药理特性，必须控制剂量，按时、按疗程服用，来确保疗效。每次服用强心药之前，都要测量脉搏数，若心率过慢，应马上停服，以防药物毒性作用发生，危及生命。


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患主动脉瓣狭窄与长时间的心脏病、高血压、糖尿病等有比不可分割的关系，有一部分是因为自身的不良因素，比如过于肥胖、嗜好吸烟等，如果想预防患主动脉瓣狭窄，应该尽量少吃以下食物。接下来找良医网为您介绍一下主动脉瓣狭窄的饮食禁忌。

 

\"专家为你讲解主动脉瓣狭窄的饮食禁忌\"


1、禁高脂肪饮食：高脂肪的食物都比较难以消化，如果及时消化之后，也会有油脂残留在体内，身体是会越来越肥胖，不仅是身材变形，还会增加心脏的压力，引起多种病症，像高血压、心律失常等。

 

2、禁高盐饮食：风湿性心脏病病患也容易出现水肿，水肿与平常饮食摄取的盐有关系，因此一定要限制每天的食盐摄入量，避免造成水肿的加重，加重心脏的负担。风湿性心脏病患者每天摄取食盐较好在1-5克之间，而且，一定要少吃含钠丰富的食品。比如香蕉等。

 

3、禁饮水过多：主动脉瓣狭窄的病患如果大量摄入水分，是会迅速增加血容量，同样会增加心脏的负担，水分来自与平常饮用的水、茶、汤、果汁等所有液体饮料。主动脉瓣狭窄病患要多注意每日的水分摄入量，适当控制在500毫升以内比较合适。如果要饮用大量的水分，还是多分成几次喝，每次喝一点，间隔的时间尽量长一些。

 

4、禁刺激性食饮和比较兴奋性药物：辣椒、生姜、烟酒或浓茶等都是含有对心脏不良的成分，比如大量进食，对心脏脆弱的病患就会更加危险，很容易使血压升高，神经系统的兴奋性增加，引起心率加快，严重诱发心律紊乱，从而加重心脏负担，导致主动脉瓣狭窄。患风湿性心脏病患者对服用刺激性食饮和兴奋性药物应特别小心谨慎。

 

主动脉瓣狭窄的病患们在饮食中需要注意营养均衡，三餐定时，保持作息规律，要勤吃蔬菜水果，预防便秘。还有，患心脏病并不意味着不可以运动，运动也可以使强身健体，并且也能防止抑郁，或者可选择比较温和的运动像慢跑、太极拳等坚持每天有规律的运动。


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 找良医网温馨提示：肺动脉瓣狭窄的饮食应注意事项，如有身体不适，请及时就医！

  

\"肺动脉瓣狭窄的患者应知应会的饮食事宜\"

  

1、多吃苹果。可把新鲜的苹果窄成苹果汁，每天一小杯。苹果汁中的抗氧化剂有利于心脏的健康运转，常喝可降低心脏病的患病率。

 

2、多喝牛奶。早晚各一杯，牛奶对于补充人体的营养十分有益，牛奶中含有丰富的蛋白质，可以增加人体的物质能量。

 

3、多吃大豆，生姜，大蒜，茄子，木耳，燕麦，红薯，山楂，茶叶，海鱼，蜜橘。

 

找良医网温馨提示：如有身体不适，请及时就医！


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\"056f5aa3b57005f5be1b237d6e975c4955246.jpg\"/

肺动脉口狭窄系指右室和肺动脉之间存在的先天性狭窄畸形。有三种类型：肺动脉瓣膜狭窄、右心室漏斗部狭窄和肺动脉主干及其分支狭窄，而以瓣膜狭窄最常见。瓣膜狭窄通常为瓣叶增厚交界合，瓣口呈鱼嘴状突向肺动脉，肺动脉主干呈狭窄后扩张，常有不同程度的肺动脉瓣环狭窄。右室漏斗部狭窄可呈隔膜性狭窄和管状狭窄。

 

隔膜性狭窄在右室漏斗部下方形成环状纤维性隔膜，将右心室分隔成两个大小不等的心室腔，其上方扩大的薄壁心室腔称为第三心室。管状狭窄是由肥厚的右心室前壁、室上岭和异常粗大的隔束和壁束所致。肺动脉主干及其分支可为一处或多处环形狭窄或发育不良。

 

病理生理 肺动脉口狭窄引起右心室血液排出受阻、压力增高，右心室与肺动脉之间存在压力阶差,其大小取决于肺动脉口狭窄的程度。压力阶差<40mmhg为轻度狭窄,40mmhg—100mmhg为中度狭窄，>100mmHg为重度狭窄。因静脉回心血流受阻，心排血量减少，血液瘀滞，可出现周围性紫绀。约1/4病例伴有卵圆孔未闭或房间隔缺损，当右心房压力明显升高时，心房水平出现右向左分流，而发生中央性紫绀。右心室长期负荷增加引起右心室向心性肥厚，加重右室流出道狭窄，出现心力衰竭，甚至死亡。

 

临床表现症状与狭窄程度、是否存在卵圆孔未闭、房间隔缺损和继发三尖瓣返流有关。轻度狭窄者可无症状或症状轻微。常见的症状是稍活动即感心悸、气促、胸闷甚至晕厥，劳动耐力差、易疲劳。症状随年龄增长而加重。并存卵圆孔未闭者，活动后出现紫绀。重症者休息时亦可出现紫绀。晚期病人常有颈静脉充盈、肝肿大、下肢浮肿，甚至腹水等右心衰竭征象。

 

体格检查：肺动脉瓣膜狭窄者胸骨左缘第2肋间可闻及响亮而粗糙的收缩期喷射样杂音并向左上方向传导。多数伴有收缩期震颤。肺动脉第二音减弱或消失。右室漏斗部狭窄的收缩期杂音位置较低，部分病例肺动脉瓣第二音正常；三尖瓣关闭不全病人，可在三尖瓣听诊区听到收缩期杂音。

 

心电图：根据狭窄程度可示正常、电轴右偏、右心室肥大劳损,T波倒置和P波高尖。

X线检查：可显示右心室、右心房增大、肺动脉段凸出。但漏斗部狭窄者肺动脉段凸出不明显。两肺野清晰、血管纹理减少，尤以外侧1/3肺野更为明显。

 

超声心动图：可显示狭窄的类型和程度。肺动脉瓣膜狭窄则显示肺动脉主干增宽，瓣叶增厚，回声增强，开放受限和右室壁增厚。彩色多普勒超声显示狭窄瓣口的高速血流信号，可测得最大跨瓣压差。漏斗部狭窄显示右室流出道狭小，小梁和肌柱增粗。彩色多普勒超声可测得右室流出道湍流信号。

 

诊断和鉴别诊断

 

根据临床表现，结合心电图、胸部x线、超声心动图检查可作出诊断。必要时行心导管右心室测压和造影检查，有助于确诊。

 

借助于肺动脉口狭窄的特征性杂音、肺动脉第二音减弱或消失的特点，以及其肺血减少x线征象，不难与室间隔缺损、房间隔缺损相鉴别。部分法洛四联症的病例，右室流出道梗阻不明显，其表现类似肺动脉口狭窄，超声心动图和心导管造影检查可提示存在室间隔缺损和主动脉骑跨，有助于鉴别诊断。

 

手术治疗

1、手术适应证

轻度狭窄，无明显症状，胸部X线和心电图检查无明显改变，右心室收缩压<60mmhg者，无需手术。中度以上狭窄，有明显临床症状，心电图提示右心室肥大或伴劳损，心导管测压显示右心室压力>75mmHg，右心室与肺动脉间压力阶差>50mmHg，均有手术指征。重度狭窄者，病理进展迅速，继发的右室流出道梗阻会加重狭窄，需尽早手术。

 

2、手术方法

由于体外循环技术已十分成熟和安全，曾用的几种非体外循环手术已弃用。胸骨正中切口，在体外循环心脏跳动或停搏下，根据狭窄类型选择心脏切口。肺动脉瓣膜狭窄通常纵形切开主肺动脉，直视下行瓣膜交界切开术；漏斗部狭窄，则切开右室流出道前壁，切除狭窄的纤维环或肥厚的壁束和隔束，疏通右室流出道。若疏通后的右室流出道仍狭窄，则用自体心包片或涤纶织片加宽流出道。若存在瓣环狭窄，则切开瓣环，行跨越瓣环的右室流出道加宽术。

 

近年有人对瓣膜型狭窄，采用经导管的肺动脉瓣球囊扩张术，由于无需剖胸，术后恢复快，较受欢迎.但部分病例扩张效果不理想，且可有肺动脉瓣膜关闭不全并发症发生。

 


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主动脉狭窄基本是由左心室出口至主动脉起始部间产生狭窄，可区分为瓣膜狭窄、瓣膜上狭窄和瓣膜下狭窄等几种类型。接下来找良医网为您介绍一下主动脉瓣狭窄有哪些症状？

 

\"专家为您讲解主动脉瓣狭窄有哪些症状\" 


1、心绞痛：主动脉瓣狭窄发生心绞痛，常提示瓣口面积小于0.8平方厘米。主动脉瓣狭窄所产生的心绞痛，和冠心病不容易区分，所以很多患者就会误认为是冠心病。主动脉瓣狭窄产生心绞痛的原因，也可能是与心肌肥厚所致需氧量加大和冠脉流量相对减少所致供氧缺失，从而导致心内膜下心肌缺血相关。

 

2、左心衰竭：在出现心衰前期，患者基本会有明显的呼吸困难，引起夜不能寐或是常从梦中惊醒等情况，另外急性肺水肿是多见并发症。风湿性心脏瓣膜病患者如果出现呼吸困难、急促等情况，一定要重视起来，因为这有可能是提示心肺功能衰退严重，而且可能出现心衰。

 

3、晕厥：经常出现在劳动后或突然从平卧位转换为直立位时，如果出现眼前发黑或短暂意识丧失。主要原因可能与心绞痛发生机制一样，即心肌氧需求增加时心肌供氧则降低。因为主动脉瓣狭窄患者，以中老年人为多数，而中老年患者往往合并有冠心病、糖尿病等，要将主动脉瓣狭窄导致的晕厥，与中风、偏瘫等情况区分。如果病人家属们发现病患有晕厥现象，一定要马上送其前往医院诊治。


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如果想知道肺动脉瓣狭窄症状，就要应该明确肺动脉瓣狭窄是什么?


\"专家为您解答肺动脉瓣狭窄表现有哪些\"


其实肺动脉瓣狭窄是指肺动脉出口的狭窄，其中包括瓣上、瓣膜、瓣下的狭窄。是临床上一种比较多见的先天性心脏病。


专家表示：肺动脉瓣狭窄的症状都是由病变部位狭窄程度来决定,轻度狭窄病人可无显著表现，中度以上狭窄者会在劳累后发生心悸、气喘、乏力及胸闷等，重症患者会有晕厥。如出现右心衰竭时可有相应的症状。极重的患者伴有缺氧性心脏停搏及猝死。如果合并房缺或卵圆孔未闭者可有不一样程度的紫绀。


找良医网温馨提示：如果身体有不适，一定要立即赶往医院进行检查和治疗。


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找良医网向您详细介绍肺动脉口狭窄症状，尤其是肺动脉口狭窄的早期症状，肺动脉口狭窄有什么表现？得了肺动脉口狭窄会怎样？

\"肺动脉口狭窄有哪些症状\"

肺动脉口狭窄症状

早期症状： 劳动耐力差、乏力和劳累后心悸、气急等症状。重度狭窄者可有头晕或剧烈运动后昏厥发作

晚期症状： 颈静脉怒张、肝脏肿大和下肢水肿等右心衰竭

相关症状： 收缩期杂音 头晕 劳累后心悸

肺动脉口狭窄症状诊断

 

本病男女之比约为3∶2，发病年龄大多在10～20岁之间，症状与肺动脉狭窄密切相关，轻度肺动脉狭窄病人一般无症状，但随着年龄的增大症状逐渐显现，主要表现为劳动耐力差、乏力和劳累后心悸、气急等症状。重度狭窄者可有头晕或昏厥发作，晚期病例出现颈静脉怒张、肝脏肿大和下肢浮肿等右心衰竭的症状，如并存房间隔缺损或卵圆窝未闭，可见口唇或末梢指(趾)端紫绀和杵状指(趾)。


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肺动脉瓣狭窄发病率约占先天性心脏病的8%～10%，肺动脉狭窄以单纯肺动脉瓣狭窄最为常见，约占90%，其次为漏斗部狭窄，脉动脉干及其分支狭窄则很少见，但可继发或并发瓣下狭窄，它可单独存在或作为其他心脏畸形的组成部分，如法洛四联症、卵圆孔未闭等。肺动脉瓣疾患包括肺动脉瓣狭窄和肺动脉瓣关闭不全。那么接下来和找良医网一起看看肺动脉患者在哪些情况下需要手术治疗。


\"专家为您解答肺动脉瓣病变患者在什么情况下需要手术治疗\"

　　   

肺动脉瓣狭窄，这种肺动脉瓣狭窄往常是由于先天性心脏畸形的一部分，肺动脉瓣扩张术也常常是在心脏畸形纠正的同时进行。单纯肺动脉瓣狭窄也可经过右心导管行肺动脉瓣球囊扩张术。在有些部分重度肺动脉瓣狭窄中，因为狭窄口是比较小的，以致球囊扩张导管不好通过，所以这种患者仍需选择开胸直视扩张术。

　　    

再有就是肺动脉瓣关闭不全，肺动脉瓣关闭不全基本是无需特殊治疗。对这些重度肺动脉瓣关闭不全，从而引起无法用药物控制的右心功能不全时，也有学者认为应当行肺动脉瓣置换术。


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肺动脉狭窄的轻微病患在临床上是没有症状的，也可正常生长发育并适应正常的生活能力暂不需要手术治疗，中等度肺动脉狭窄患者，基本在20岁左右出现活动后心悸气急状态。


\"专家称现在肺动脉狭窄可直视纠治\"

　　

如果这时候不采取手术治疗，随着年龄的增长必定会导致右心室负荷过重出现右心衰竭症状，从而缺失生活和劳动能力，对极重度肺动脉狭窄患者常在幼儿期出现明显症状，如果没有及时治疗常可在幼儿期死亡。

　　

治疗手术的指征有什么？

　　

①病患虽症状，心电图也没有显著的特征异常改变，右心导管检查示右室收缩压在8.0kPa(60mmHg)以上，或跨瓣压力阶差大于5.3kPa(40mmHg)，还有超声心动图检查示瓣孔在1.0～1.5cm属中度狭窄应该采取手术。

　　

②没有症状但是心电图示右心室肥大或带有劳损，X线片示心脏有中度增大者。

　　

③还有症状心电图及X线均有不同改变者，手术年龄以学龄前施行是比较好的。

　　

④症状显著有昏厥发作史属极度狭窄者，应当在婴幼儿期施行手术以减少右心室负荷。

　　

手术治疗的方法

　　

肺动脉瓣狭窄在过去的时候基本都在中度低温下（30～32℃）施行直观视膜交界切开术，低温方法简单方便，对体内生理功能的紊乱较少，术后恢复顺利且较快，但是因为低温仅能提供安全循环阻断时限6～8分钟，心内操作必须紧促完成，因为没有充裕时间对心内畸形进行探查和纠治。

　　

找良医网温馨提示：最近几年体外循环日臻完善，心肌保护和手术技巧的进展使心内直视手术更加安全，因而肺动脉口狭窄手术一般均采用体外循环下心内直视纠治术。


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肺动脉狭窄手术死亡率相对来说还是比较低的，基本在1%左右，手术效果还是不错的，手术后肺动脉狭窄症状改善或彻底消失，基本可以恢复正常生活。

 

\"专家为您介绍肺动脉狭窄的手术治疗


目前治疗肺动脉狭窄包括外科手术及球囊导管扩张术。球囊导管扩张术可使粘连的肺动脉瓣隔开，从而解决了狭窄问题，除有些病例失败外基本成功，再先天性肺动脉狭窄率是较低的，是主要的先天性肺动脉狭窄治疗方法。

 

肺动脉狭窄手术治疗主要适用于瓣膜发育不良、瓣环过小或是合并其它心脏畸形的病例，肺动脉狭窄的外科手术经常适用于紧急的肺动脉狭窄新生儿，即右心室和肺动脉之间的压力差相差超过80-100mmHg以上，或者是病人无法使用球囊导管扩张术时(例如肺动脉瓣发育不良，瓣膜下漏斗部狭窄)。

  

专家称，先天性肺动脉瓣狭窄预后效果还是不错的，可活至成年。如果是重度肺动脉瓣狭窄患者常前期发生心力衰竭。多见的并发症为亚急性细菌性心内膜炎及心力衰竭。肺动脉瓣狭窄治疗手术成功者特征减轻或者基本不见，可适当有一些正常劳动，心脏外形缩小，右心室肥厚减轻，心脏杂音减轻，但鲜有完全消失的病例。


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您知道肺动脉口狭窄的检查方法吗？找良医网在本文中为您详细解答，一起了解一下吧！

\"专家向您解答

一、检查

1、X线检查：

轻度肺动脉口狭窄胸部X线可无异常表现，中、重度狭窄病例则显示心影轻度或中度扩大，以右室和右房肥大为主，心尖因右室肥大呈球形向上抬起。肺动脉瓣狭窄病例扩大的肺动脉段呈圆隆状向外突出，而漏斗部狭窄病人该段则呈平坦甚至凹陷，肺门血管阴影减少，肺野血管细小，尤以肺野外围1/3区域为甚，故肺野清晰。

肺动脉瓣狭窄X线表现　心影轻～中度扩大，心尖呈圆钝向上抬起，肺动脉段外隆，肺野清晰。

 

2、心电图检查：

心电图改变视狭窄程度而异轻度肺动脉口狭窄病人心电图在正常范围，中度狭窄以上则示电轴右偏、右心室肥大、劳损和T被倒置等改变，重度狭窄病例可出现心房肥大的高而尖的P波。一部分病例显示不全性右束支传导阻滞。

 

3、超声心动图检查：

肺动脉瓣狭窄病例超声心动图检查可显示瓣叶开放受限制，瓣叶呈圆顶形突起瓣口狭小，并可查明右室流出道肌肉肥厚和右心室和右心房扩大的程度。

  根据临床体征、X线及超声心动图检查，一般的肺动脉口狭窄不难作出初步诊断，但对某些病例为了进一步明确诊断或鉴别诊断的需要，了解狭窄程度和伴发的心脏畸形，有助于正确的手术选择，有必要作右心导管或右室造影检查。

 

4、右心导管和选择性右室造影检查：

正常右心室收缩压为2.0～4.0kPa(15～30mmHg)舒张压为0～0.7kPa(0～5mmHg)，肺动脉收缩压与右心室收缩压相一致，如右心室收缩压高于4.0kPa(30mmHg)，且右室与肺动脉收缩压阶差超过1.3kPa(10mmHg)即提示为能存在肺动脉口狭窄，跨瓣压力阶差的大小可反映肺动脉口狭窄的程度，如跨瓣压力阶差在5.3kPa(40mmHg)以下为轻度狭窄，肺动脉瓣孔约在1.5～2.0cm左右;如压力阶差为5.3～13.3kPa(40～100mmHg)为中度狭窄，瓣孔约在1.0～1.5cm;压力阶差在13.3kPa(100mmHg)以上为重度狭窄，估计瓣孔为0.5～1.0cm。右心导管从肺动脉拉出至右心室过程中，进行连续记录压力，根据压力曲线图形变化和有无出现第三种类型曲线可判断肺动脉口狭窄系单纯肺动脉瓣狭窄或漏斗部狭窄或二者兼有的混合型狭窄。

 

①瓣膜型

②漏斗部型

③混合型

肺动脉和右心室间连续测压压力曲线示肺动脉口狭窄的部位

 

选择性右心室造影不必作为常规检查，但对某些疑难病例为明确诊断和鉴别诊断需要，了解狭窄部位和程度，可结合右心导管检查行右室造影术。于右心室内注入造影剂，在肺动脉瓣部位造影剂排出受阻，瓣膜融合呈圆顶状突入肺动脉腔内，造影剂经狭小的瓣口喷射入肺动脉后呈扇状散开，漏斗部狭窄则可在右心室流出道呈现狭长的造影剂影象。

 

找良医网温馨提示：如有身体不适，请及时就医！


","barId":"2313","topicTypeId":"1","topicThemeId":"1028","readLevel":1,"files":"[]","clickNoLikeCount":0,"clickLikeCount":0,"clickCount":1014,"score":0,"partCount":0,"replayCount":0,"publishStatus":1,"publishTime":1508917985346,"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":1508917985346,"metaSearch":null,"rn":null},{"id":"6359","isDel":0,"createAt":1508917831093,"createBy":"8abb11d0af1511e7a3d800163e04584d","createName":"良药苦口","updateAt":1523609425827,"updateBy":"8abb11d0af1511e7a3d800163e04584d","updateName":"良药苦口","userId":"8abb11d0af1511e7a3d800163e04584d","title":"专家向您解答 肺动脉口狭窄可能并发哪些疾病","content":"

找良医网向您详细介绍肺动脉口狭窄有哪些并发病症，肺动脉口狭窄还会引起哪些疾病？

\"专家向您解答

肺动脉口狭窄常见并发症：肺动脉口狭窄 血症

 

肺动脉口狭窄并发症

一般较好，重度狭窄的病人，可发生右心衰竭而死亡。本病尚存在并发一些术后并发症的危险，除一般体外循环心内直视手术可能导致的并发症外主要有两点：其一肺动脉口狭窄解除后，肺循环血容量明显增多，因此应根据动脉压和中心静脉压适当补足血容量，以避免术后低心排血症，必要时静脉内滴注多巴胺和西地兰等强心升压药，以增强心肌收缩力，过渡至血流动力学稳定。其二如流出道狭窄解除不彻底，右室压力仍高，术后容易引起右室切口出血，且易产生右心衰竭。

 

找良医网温馨提示：如有身体不适，请及时就医！


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专家称，肺动脉狭窄是指右心室与肺动脉间的过道，由于先天性畸形产生的狭窄，而室间隔完整。这种常称作的先天性心血管病之一。


\"专家为您讲解肺动脉狭窄\"

 

比交多见的狭窄类型有瓣狭窄，漏斗部狭窄，肺动脉狭窄。可以独自存在，亦可并在。该病症状和病情发展与狭窄程度相关，轻微狭窄者可无症状，重度狭窄者症状出现早，而且渐渐表现出现紫绀及心功能衰竭。

　　

该疾病手术疗效确切，治愈率比较高。疗效欠佳或病死者多数是没有及时接受治疗，病情危重或伴其他心脏畸形者。所以，应该早诊断，早治疗。      


","barId":"2313","topicTypeId":"1","topicThemeId":"1026","readLevel":0,"files":"","clickNoLikeCount":0,"clickLikeCount":0,"clickCount":1022,"score":0,"partCount":0,"replayCount":0,"publishStatus":1,"publishTime":1519627285099,"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":1519627285099,"metaSearch":null,"rn":null},{"id":"12543","isDel":0,"createAt":1519372250147,"createBy":"8b39c578b53311e7a3d800163e04584d","createName":"梅油油","updateAt":1519372573767,"updateBy":"8b39c578b53311e7a3d800163e04584d","updateName":"梅油油","userId":"8b39c578b53311e7a3d800163e04584d","title":"专家为您解答肺动脉瓣狭窄是什么原因引起的","content":"

肺动脉瓣狭窄发病率约占先天性心脏病的8%～10%，肺动脉狭窄以单纯肺动脉瓣狭窄最为常见，约占90%，其次为漏斗部狭窄，脉动脉干及其分支狭窄则很少见，但可继发或并发瓣下狭窄，它可单独存在或作为其他心脏畸形的组成部分，如法洛四联症、卵圆孔未闭等。若跨瓣压差<30%mmHg，一般不会出现明显的临床症状。那么肺动脉瓣狭窄是什么原因引起的？     

 

\"专家为您解答肺动脉瓣狭窄是什么原因引起的\"


在胚胎形成的头3 个月过程中，胎儿会因为各种原因导致肺动脉狭窄。其中的两个重要原因，有一个是环境因子，即风疹综合征，还有一个是家族遗传因子。如果母亲在妊娠的头3 个月内患风疹，就会使胎儿发生风疹综合征，表现为白内障、耳聋及心血管畸形，而且心血管畸形者较多是为肺动脉狭窄，也可为肺动脉瓣膜狭窄。最近几年发现有家族性肺动脉瓣狭窄，在兄弟当中之发病率为2.9%；但是在不同的综合征中，比如Noonan 综合征，也是有肺动脉瓣狭窄者，但是很多病人的病因还没有证实。

      

大动脉半月瓣都是从动脉干隆起和间介的隆起发育形成。肺动脉瓣前叶来自左间介隆起，后左及右叶都是来自左下、右上动脉干隆起。瓣叶联合是因为这些胚胎组织之间分隔开来促成。肺动脉瓣狭窄的形成原因暂时还未解答。如果瓣叶上完全没有瓣叶联合的痕迹，可能是在胚胎发育早期动脉干或间介的隆起之间完全没有完全分隔。如果在瓣叶上有结缔组织束或缝迹则也是可能在胚胎发育晚期瓣叶之间融合引发，也有专家认为胎儿心内膜炎与瓣膜狭窄的发生是有关联的。


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肺动脉瓣狭窄发病率约占先天性心脏病的8%～10%，肺动脉狭窄以单纯肺动脉瓣狭窄最为常见，约占90%，其次为漏斗部狭窄，脉动脉干及其分支狭窄则很少见，但可继发或并发瓣下狭窄，它可单独存在或作为其他心脏畸形的组成部分，如法洛四联症、卵圆孔未闭等。若跨瓣压差<30%mmHg，一般不会出现明显的临床症状。

 

 \"专家为您讲解肺动脉瓣狭窄发病因素是什么\"

 

还有在怀孕的前3个月中，胎儿会因各种原因引起肺动脉瓣狭窄。这中间值得指出的有一些重要原因，一个是环境因素：即风疹综合征，另一个就是家族遗传因素。

 

如果妈妈们在妊娠的头3个月内患风疹，就是可使胎儿发生风疹综合征，具体症状为白内障、耳聋及心血管畸形，而心血管畸形者最常见的就是肺动脉狭窄，也可为肺动脉瓣狭窄。近来研究发现，有家族性肺动脉瓣狭窄，在弟兄当中之发病率为2.9%；在其他综合征中如Noonan综合征，也是有肺动脉瓣狭窄，但是很多数患者的病因尚未证实。


","barId":"2313","topicTypeId":"1","topicThemeId":"1026","readLevel":0,"files":"","clickNoLikeCount":0,"clickLikeCount":0,"clickCount":1000,"score":0,"partCount":0,"replayCount":0,"publishStatus":1,"publishTime":1518058401319,"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":1518058401319,"metaSearch":null,"rn":null},{"id":"12137","isDel":0,"createAt":1517556981175,"createBy":"8b39c578b53311e7a3d800163e04584d","createName":"梅油油","updateAt":0,"updateBy":null,"updateName":null,"userId":"8b39c578b53311e7a3d800163e04584d","title":"专家为您讲解肺动脉瓣狭窄的原因是什么","content":"

肺动脉瓣狭窄是多见的先天性心脏病的一种，是因为胚胎期发育异常导致，但也可能存在继发性的肺动脉口狭窄，还是因为其它疾病所导致，比如胎儿宫内感染也可以引发该疾病。各类肺动脉狭窄其胚胎发育障碍不一样。接下来我们就来看一下主要病因。患上肺动脉瓣狭窄该怎么办？

 

\"专家为您讲解肺动脉瓣狭窄的原因是什么\"


不同种类肺动脉口狭窄其胚胎发育障碍原因不一，在胚胎发育第5-6周，动脉干开始隔成为主动脉与肺动脉，在肺动脉腔内膜开始促成三个瓣膜的原始结节，而且腔内生长，继而吸收变薄促成三个肺动脉瓣，如瓣膜在成长过程出现障碍，三个瓣叶交界融合致使一个圆顶状突起的嘴状口，也可形成肺动脉瓣狭窄。

 

 

在肺动脉瓣发育的时候，心球的圆锥部被吸收成为右心室流出道，比如育障碍形成流出道环状肌肉肥厚或肥大肌束横跨室壁与间隔间即导致右心室流出道漏斗型狭窄。还有胚胎发育过程中，第6对动脉弓发育成为左、右肺动脉，其远端与肺小动脉相对，近端与肺动脉干相连，比如发育困难即形成脉动脉分支或肺动脉干狭窄。

 

现在大概先天性足畸形有哪些症状了吧，接着小孩年龄的增大，如果没有及时到正规医院进行全面的疗效，畸形的症状会不停严重，而且会影响孩子的一生。


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肺动脉瓣狭窄发病率约占先天性心脏病的8%～10%，肺动脉狭窄以单纯肺动脉瓣狭窄最为常见，约占90%，其次为漏斗部狭窄，脉动脉干及其分支狭窄则很少见，但可继发或并发瓣下狭窄，它可单独存在或作为其他心脏畸形的组成部分，如法洛四联症、卵圆孔未闭等。若跨瓣压差<30%mmHg，一般不会出现明显的临床症状。

\"专家想您解答

肺动脉狭窄的病因

各类肺动脉狭窄其胚胎发育障碍原因不一，在胚胎发育第6周，动脉干开始分隔成为主动脉与肺动脉，在肺动脉腔内膜开始形成三个瓣膜的原始结节，并向腔内生长，继而吸收变薄形成三个肺动脉瓣，如瓣膜在成长过程发生障碍，如孕妇发生宫内感染尤其是风疹病毒感染时三个瓣叶交界融合成为一个圆顶状突起的鱼嘴状口，即形成肺动脉瓣狭窄。在肺动脉瓣发育的同时，心球的圆锥部被吸收成为右心室流出道（即漏斗部），如发育障碍形成流出道环状肌肉肥厚或肥大肌束横跨室壁与间隔间即形成右心室流出道漏斗型狭窄。另外胚胎发育过程中，第6对动脉弓发育成为左、右肺动脉，其远端与肺小动脉相连接，近端与肺动脉干相连，如发育障碍即形成脉动脉分支或肺动脉干狭窄。

 

找良医网温馨提示：如有身体不适，请及时就医！


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