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Title:: valuation of the change in right ventricular function in rabbits with hyperthyroid cardiomyopathy with different left ventricular geometry by quantitative tissue velocity imaging

作者:: 田燕¹; 礼广森¹; 王亚娟²; 王远征¹; 康雯¹; 孟思思¹; 罗文婷¹; (1.大连医科大学附属第二医院超声科，辽宁大连 116023；
2.内蒙古民族大学附属医院电诊室，内蒙古通辽 028007)

Author(s):: TIAN Yan¹; LI Guang-sen¹; WANG Ya-juan²; WANG Yuan-zheng¹; KANG Wen¹; MENG Si-si¹; LUO Wen-ting¹; (1.Department of Ultrasound, Second Affiliated Hospital, Dalian Medical University, Dalian 116023, Liaoning, China;
2.Electrical Diagnostic Division, Affiliated Hospital, Inner Mongolia University for Nationalities, Tongliao 028007, Inner Mongolia, China)

关键词:: 定量组织速度成像; 甲亢性心肌病; 右心室功能; 兔

Keywords:: quantitative tissue velocity imaging; hyperthyroid cardiomyopathy; right ventricular function; rabbit

分类号:: R542.2

DOI:: -

文献标识码:: A

摘要:: 目的:探讨定量组织速度成像（QTVI）技术评价甲状腺功能亢进（甲亢）性心肌病兔不同左室构型右心功能变化的价值。方法：新西兰纯种白兔30只，随机分为实验组（n=20只）和对照组（n=10只）。实验组腹腔注射左旋甲状腺素［45 μg/(kg·d)×28 d］建立甲亢兔模型。实验组超声参数依据Ganau的分型方法分为两型：向心性肥厚亚组（CH亚组，n=7）和离心性肥厚亚组（EH亚组，n=11）。各组均行常规超声心动图及QTVI参数测定，包括三尖瓣前瓣环收缩期峰值速度（Vs）、收缩期加速度（a）和舒张期峰值速度（Ve）、舒张早期峰值血流速度(E)/Ve 等。结果： CH亚组左室质量指数（LVMI）及相对室壁厚度（RWT）与对照组比较明显增加（均P<0.01）。EH亚组LVMI与对照组比较明显增加（P<0.01），而RWT与对照组比较差别无显著差异。CH亚组与对照组比较三尖瓣前瓣环Ve明显减低（P<0.05），E/Ve明显增加（P<0.05），但Vs、a与对照组比较差别无显著差异。EH亚组与对照组和CH亚组比较，三尖瓣前瓣环Ve、Vs和a明显减低（均P<0.01），E/Ve明显增加（P<0.05）。结论： QTVI技术可评价甲亢性心肌病兔不同左室构型右心室收缩及舒张功能的变化。

Abstract:: AIM:To evaluate the change of right ventricular function in rabbits with hyperthyroid cardiomyopathy with different left ventricular geometry by quantitative tissue velocity imaging (QTVI). METHODS: Thirty purebred New Zealand rabbits were randomly divided into experimental group (n=20) and control group (n=10). Hyperthyroidism animal model was established by intraperitoneal injection of levothyroxine (L-Thy) ［(45 μg/(kg·day)］ for 28 days in the experimental group and according to the Ganau Classification, ultrasound parameters were divided into two groups: concentric hypertrophy (CH subgroup, n=7) and eccentric hypertrophy (EH subgroup, n=11). Peak velocity during systole (Vs), systolic acceleration (a), peak velocity during diastole (Ve) and E/Ve at the anterior valve tricuspid annulus were measured by QTVI, and conventional echocardiographic parameters were also obtained. RESULTS: LVMI and RWT in CH group increased significantly (both P<0.01). LVMI in EH group increased obviously (P<0.01), but no significant difference in RWT was seen compared with that in control group. Ve in CH group was lower than that in control group (P<0.05). E/Ve in CH group was higher than that in control group (P<0.05), but no significant difference in Vs and a was found between CH group and control group (both P>0.05). Ve, Vs and a in EH group were significantly lower than those in CH group and control group (both P<0.01). E/Ve in EH groups was significantly higher than that in CH group and control group (P<0.05). CONCLUSIONS: QTVI can accurately assess the right ventricular systolic and diastolic functions in rabbits with hyperthyroid cardiomyopathy with different left ventricular geometry.

参考文献/References

[1]李华康,戴引,殷跃辉.Fas、FasL在兔甲亢性心脏病中的表达及其意义[J].重庆医科大学学报,2006,31(5):673-676.
[2]Ganau A,Devereux RB,Roman MJ,et al.Patterns of left ventricular hypertrophy and geometric remodeling in essential hypertension[J].J Am Coll Cardiol,1992,19(7):1550-1558.
[3]Qin XJ,LI H,YOU J,et al.Left ventricle geometry remolding after heart transplantation: A two-dimensional ultrasound study[J].J Huazhong Univ Sci Technolog Med Sci,2013,33(6):892-896.
[4]Biondi B,Palmieri EA,Lombardi G,et al.Effectsof thyroid hormone On cardiac function:the relative importance of heart rate, loading conditions,and myocardialcontractility in the regulation of cardiac performance in human hyperthyroidism[J].J Clin Endocrinol Metab,2002,87(3):968-974.
[5]李楠,任卫东,靳忠民,等.超声斑点追踪显像评估压力超负荷性左心室肥厚兔的左心室功能[J].中国医学影像技术,2010,26(7):1217-1221.
[6]Rajagopalan N,Saxena N,Simon MA,et al.Correlation of tricuspid annular velocities with invasive hemodynamics in pulmonary hypertension[J].Congest Heart Fail,2007,13(4):200-204.
[7]吴红花,郭晓蕙,高燕明.甲状腺功能亢进性心脏病75例临床分析[J].中华医学杂志,2007,87(4):262-264.
[8]Vinereanu D,Florescu N,Sculthorpe N,et al.Differentiation between pathologic and physiologic left ventricular hypertrophy by tissue Doppler assessment of long-axis function in patients with hypertrophic cardiomyopathy or systemic hypertension and in athletes[J].Am J Cardiol,2001,88(1):53-58.

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定量组织速度成像评价甲亢性心肌病兔不同左室构型右心功能的变化

《心脏杂志》[ISSN:1009-7236/CN:61-1268/R]

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