慢性心力衰竭患者甲状腺激素水平与认知功能的相关性研究
2016-04-21牛伟华李广平天津医科大学第二医院心脏科天津300211
牛伟华,李广平(天津医科大学第二医院心脏科,天津 300211)
慢性心力衰竭患者甲状腺激素水平与认知功能的相关性研究
牛伟华,李广平
(天津医科大学第二医院心脏科,天津300211)
摘要目的:探讨慢性心力衰竭(CHF)患者甲状腺激素(TH)水平与认知功能的关系。方法:便利抽取181例CHF患者,记录年龄、性别、文化程度、心衰病因、心衰病程等一般资料,测定空腹TH水平,采用蒙特利尔认知评估量表(MoCA)评估认知功能。根据MoCA评分将CHF患者分为认知功能障碍组(MoCA评分<26分)与认知功能正常组(MoCA评分≥26分),比较两组间TH水平的差异,同时探讨CHF患者TH与认知功能之间的关系。结果:CHF患者的认知功能总分为(24.99±2.81)分。认知功能障碍组比认知功能正常组血清游离三碘甲状腺原氨酸(FT3)水平低,差异有统计学意义(P<0.05)。相关分析显示:CHF患者FT3与认知功能总分、视空间与执行能力、注意力、定向得分呈正相关(P<0.05);血清游离甲状腺素(FT4)与视空间与执行能力得分呈正相关(P<0.05)。结论:CHF患者FT3水平的降低与认知功能障碍之间存在一定的相关性。
关键词心力衰竭;甲状腺激素;认知功能
Correlation between thyroid hormone and cognitive function in hospitalized patients with chronic heart failure
NIU Wei-hua,LI Guang-ping
(Department of Cardiology,The Second Hospital,Tianjin Medical University,Tianjin 300211,China)
Abstract Objective:To investigate the relationship between thyroid hormone and cognitive function in hospitalized patients with chronic heart failure(CHF).Methods:A convenience sample of 181 hospitalized patients with CHF was selected to assess cognitive function using the Montreal Cognitive Assessment(MoCA).The levels of free three iodine thyroid original acid(FT3),free thyroxine(FT4)and thyroid stimulating hormone(TSH)were measured by chemical radiation immune method.The baseline clinical data were detected,including age,sex,education level,the cause of heart failured,and the course of disease.According to the MoCA scores,CHF patients were divided into normal cognitive function group and abnormal cognitive function group,respectively.The levels of TH between two groups were compared,and the relationship between TH and cognitive function was evaluated.Results:The total scores of cognitive function in patients with CHF were(24.99±2.81)points.The levels of FT3 in patients with cognitive impairment were lower than those with normal cognitive function (P<0.05).The level of FT3 was positively associated with the score of cognitive function and cognitive domains of visuospatial/executive function,attention and orientation.The level of FT4 was positively correlated with the score of cognitive domain of visuospatial/executive function.Conclusion:The decline of FT3 is associated with cognitive impairment in patients with CHF.
Key words heart failure;thyroid hormone;cognitive function
慢性心力衰竭(chronic heart failure,CHF)亦称慢性充血性心力衰竭,是各种心脏疾病的严重阶段,具有发病率高、再入院率高、病死率高等特点[1]。国外研究显示大约30%~80%的CHF患者存在认知功能障碍[2-3],而认知功能障碍又增加了CHF患者反复住院、出现痴呆、残疾、自理能力下降、死亡等的风险[4]。近年来,尽管对于CHF患者认知功能障碍影响因素的研究取得了很大进展,但有关CHF患者甲状腺激素与认知功能之间关系的研究较为少见。因此,本研究旨在探讨CHF患者甲状腺激素水平与认知功能的关系,为进一步研究CHF患者认知障碍的病生理机制奠定基础,为改善CHF患者的认知功能提供依据。
1 对象与方法
1.1研究对象采用便利抽样的方法选取2014年10月-2015年7月在天津市某三级甲等医院心血管内科住院的CHF患者181例,年龄45~85岁,平均(66.22±10.71)岁。其中男性113例(62.4%),女性68例(37.6%)。文化程度:小学及以下51例(28.2%),初中49例(27.1%),高中/中专/技校62例(34.3%),大专及以上19例(10.5%)。原发病:瓣膜病19例(10.5%),冠心病106例(58.6%),高血压19例(10.5%),心肌病23例(12.7%),其他14例(7.7%)。……
