An evaluation of transmitral and pulmonary venous Doppler indices for assessing murine left ventricular diastolic function.

An evaluation of transmitral and pulmonary venous Doppler indices for assessing murine left ventricular diastolic function.
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DOI:
10.1016/j.echo.2010.05.017
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发表时间:
2010-08
影响因子:
6.5
通讯作者:
Patel, Vickas V.
Patel, Vickas V.
中科院分区:
医学2区
文献类型:
--
作者:
Yuan, Lijun;Wang, Tao;Liu, Fang;Cohen, Ethan D.;Patel, Vickas V.

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随着基因工程小鼠心脏病模型的不断发展,进一步发展非侵入性技术来评价这些模型中的心脏舒张功能障碍将是有价值的。因此,我们进行了全面的二尖瓣和肺静脉多普勒超声心动图研究,以设计新的指数舒张功能的小鼠模型与心脏肥大,这是验证对侵入性测量的血流动力学参数。我们检查了10只患有舒张功能障碍的HopXTg转基因小鼠和10只年龄匹配的对照小鼠,这些小鼠用1-2%异氟烷(雄性,年龄14-18周)镇静。这些研究表明,二尖瓣多普勒E波的加速时间是揭示HopXTg小鼠LV舒张功能障碍的最佳多普勒参数。这是第一项研究,以评估效用的E波和肺静脉多普勒超声心动图的加速时间作为一个主要的诊断模式,评估小鼠舒张功能。
With the continued development of genetically engineered mouse models of cardiac disease, further advancement of non-invasive techniques for evaluating cardiac diastolic dysfunction in these models would be valuable. Therefore, we performed comprehensive transmitral and pulmonary venous Doppler echocardiographic studies to devise novel indices of diastolic function in a mouse model with cardiac hypertrophy, which were validated against invasively measured hemodynamic parameters. We examined 10 HopXTg transgenic mice with diastolic dysfunction and 10 age-matched controls sedated with 1–2% isoflurane (male, age 14–18 weeks). These studies revealed the acceleration time of the transmitral Doppler E-wave was the best Doppler parameter for unmasking LV diastolic dysfunction in HopXTg mice. This is the first study to assess the utility of the acceleration time of the E wave and pulmonary venous Doppler echocardiography as a primary diagnostic modality for assessing murine diastolic function.
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