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第190章 战二(第1页)

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甲亢时心律失常最常见,包括窦性心动过、房性期前收缩、阵性心动过、心室扑动、心房纤颤,其中最常见者为房颤。

2。甲亢与心脏增大

久而未治的甲亢可引起突出的心脏形状改变,包括心房或心室扩大、心脏重量增加、心肌细胞肥大、心肌纤维间隙增宽,这些改变在甲状腺功能恢复正常后可以改善或逆转。

3。甲亢与心衰

据报道,甲亢患者充血性心衰的生率大约6%,年龄大于6o岁,病程长者更易生。心衰的生与以下因素有关1甲亢时高动力循环状态使心肌负荷长期过重,可致心脏增大,心输出量增加;2心肌耗氧量增加,能量代谢障碍;3快型心律失常,尤其是房颤,致心排出量下降;④Raas激活可导致心肌肥大和血容量的增加。其心衰的特点是以右心衰为多见,也可生左心衰。

4。心绞痛和心肌梗死

甲亢性心脏病生心绞痛较少,多为冠状动脉供血相对不足,以胸前或胸部沉重感多见,心肌梗死者不多见,与冠脉痉挛、微循环障碍和血液流变学异常有关。

检查

编辑播报

1。甲状腺吸1311碘率检查131碘检查吸碘高峰前移、升高或曲线上升快。

2。甲状腺激素的测定血清T3,T4,FT3,FT4等升高,Tsh下降。

3。x线检查肺动脉弓突出,可见心影增大。

4。心电图检查

(1)左室肥大。

(2)sT-T改变sT-T病理性下降和T波改变(降低、双向、倒置)。

(3)甲亢p波甲亢患者心电图有p波变化的为26。2%。

(4)p-Q间期改变甲亢时p-Q间期延长者为1。7%~4。6%。

(5)高T波重型甲亢高T波仅为14%。

(6)Q-T间期Q-T间期延长较缩短多见。

诊断

编辑播报

先要符合甲亢的诊断,除有临床症状和体征外,实验室检查十分重要,尤其在不典型老年甲亢病人,除T4、游离T4、T3和游离T3增高外,Tsh水平低下甚至测不出,是诊断甲亢的重要指标。

在甲亢的基础上生下列1项或1项以上的心脏异常,又排除了其他原因引起者,并在甲亢控制后,下列心脏异常消失者,可诊断为甲亢性心脏病。

1。明显的心律失常(阵性或持续性心房颤动,频房性期前收缩或束支传导阻滞等)。

2。心脏增大(一侧或双侧)。

3。患甲亢后生心绞痛或急性心肌梗死。

治疗

编辑

甲亢性心脏病治疗的关键是控制甲亢,同时治疗心血管的并症。

1。常规治疗

(1)一般治疗适当休息、注意补充足够热量和营养,包括糖、蛋白质和B族维生素等,精神紧张,不安或失眠较重者,可给予苯二氮类镇静药。

(2)甲状腺功能亢进症的治疗包括药物治疗、放

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