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首页> 外文期刊>Journal of Clinical Ultrasound: JCU >Changes in transmitral and pulmonary venous flow patterns in the first day of life.
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Changes in transmitral and pulmonary venous flow patterns in the first day of life.

机译：在生命的第一天，传输和肺静脉血流模式的变化。

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摘要

The purpose of this study was to see the relationship between changes in pulmonary venous flow velocities and those in transmitral flow velocities during the first day of life. A serial Doppler echocardiography was performed in 24 normal neonates at 2, 12, and 24 hours of age. The size of the ductus arteriosus was 4.3 +/- 0.5 mm at 2 hours and 2.1 +/- 0.7 mm at 12 hours, and closed in 21 of 24 neonates at 24 hours. The peak systolic pulmonary venous flow (peak S), peak diastolic pulmonary venous flow (peak D), peak D/S, peak velocity at early diastolic filling (peak E), and peak E/A, which were high at 2 hours, decreased significantly at 12 hours but remained constant thereafter. The size of the ductus arteriosus was found to be correlated with peak S, peak D, and peak D/S. There was a direct correlation between peaks E and D (r: 0.64, p < 0.01) as well as a direct correlation between peaks E/A and D/S (r: 0.36, p < 0.05). These results indicate that the diastolic pulmonary venous flow is determined bythe same factors that influence the transmitral flow. These waveforms may reflect the increase in pulmonary circulatory volume by left-to-right shunting through the ductus arteriosus.
机译：这项研究的目的是了解在生命的第一天，肺静脉血流速度的变化与透射血流速度的变化之间的关系。连续多普勒超声心动图在2、12和24小时的24名正常新生儿中进行。动脉导管的大小在2小时时为4.3 +/- 0.5毫米，在12小时时为2.1 +/- 0.7毫米，在24小时时有24例新生儿中有21例闭合。在2小时时，最高的收缩期肺静脉血流量（峰值S），舒张期肺静脉血流量峰值（峰值D），D / S峰值，舒张早期充盈时的峰值速度（峰值E）和峰值E / A，在12小时时明显下降，但此后保持不变。发现动脉导管的大小与峰S，峰D和峰D / S相关。峰E和D之间存在直接相关性（r：0.64，p <0.01），并且峰E / A和D / S之间存在直接相关性（r：0.36，p <0.05）。这些结果表明，舒张期肺静脉血流是由影响透射血流的相同因素决定的。这些波形可能反映了通过动脉导管左右分流引起的肺循环量的增加。

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