Assessment of left ventricular diastolic function in hypertensive patients under different hemodynamic conditions: comparative study between transmitral and tissue doppler echocardiography
Assessment of left ventricular diastolic function in hypertensive patients under different hemodynamic conditions: comparative study between transmitral and tissue doppler echocardiography
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DOI：
10.1590/s0066-782x2006001500009
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发表时间：
2006-08-01
影响因子：
2.6
通讯作者：
Torres, Marco Antonio Rodrigues
中科院分区：
文献类型：
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作者：
Danzmann, Luiz Cláudio;Freitas, Valéria Centeno de;Torres, Marco Antonio Rodrigues
目的：评价高血压受试者在左下肢抬高5分钟和握力1分钟（分别为条件1和条件2）前负荷增加时，组织多普勒获得的近二尖瓣环段基底后隔左室舒张位移速度与二尖瓣血流速度的关系。方法：25例门诊动脉高血压患者（男性15例，52+/-11岁），在基础情况和条件1和条件2下，通过透射血流多普勒变量：E、A、E/A和组织多普勒变量：E′、A′和E′/A。为了比较基础情况与条件1和条件2的结果，采用配对t检验。结果：E（cm/s）变化范围为68、88 +/- 11、94 ~ 75、82 +/- 15、71*；E′（cm/s）变化范围为8、22 +/- 2、30 ~ 8、31 +/- 2、24
OBJECTIVE: To evaluate the behavior of LV diastolic displacement velocities of basal posterior septum near mitral ring segment obtained by tissue Doppler in relation to mitral flow velocities of hypertensive subjects, submitted to preload increase by left inferior limbs elevation for 5 minutes, and during 1 minute of handgrip (conditions 1 and 2, respectively).METHODS: Twenty five outpatients (15 men, 52+/-11 years), with arterial hypertension > 3 years, by the transmitral flow Doppler variables: E, A and E/A, and of tissue Doppler: E', A' and E'/A', in basal situation and in conditions 1 and 2. For comparison of results in basal situation with conditions 1 and 2 a paired t test was applied.RESULTS: E(cm/s) varied from 68,88 +/- 11,94 to 75,82 +/- 15,71* and E'(cm/s) varied from 8,22 +/- 2,30 to 8,31 +/- 2,24 in condition 1 (p