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首页> 外文期刊>Archives of disease in childhood. Fetal and neonatal edition >Echocardiographic assessment of ductal significance: retrospective comparison of two methods.
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Echocardiographic assessment of ductal significance: retrospective comparison of two methods.

机译：超声心动图评估导管意义：两种方法的回顾性比较。

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Patent ductus arteriosus (PDA) in preterm infants is often assessed with echocardiographic parameters, especially colour Doppler ductal diameter and pulsed Doppler flow pattern. Clinical algorithms have been proposed in which PDA treatment is indicated by either large diameter or a particular flow pattern, however it is unknown whether ductal diameter and flow pattern provide equivalent stratification of infants.Retrospectively assess both parameters in 197 echocardiograms from 104 infants (gestational age <31 weeks).Echocardiograms were independently reviewed and the internal colour Doppler diameter of the PDA and the pulsed Doppler flow pattern were characterised for each study (169 records had both parameters recorded).Diameter varied widely within each group but was significantly associated with flow pattern: mean diameter was greatest in the pulmonary hypertension (PH) group (2.6 mm), progressively narrowed across growing and pulsatile groups, and was smallest in the closing group (1.3 mm). When echocardiograms were categorised using previously published diameters, 82.4% of the PH group had diameters >2.0 mm, large diameters predominated in the growing and pulsatile groups but to a progressively smaller extent, and 98.1% of closing group had diameters <2.0 mm.Ductal diameter and flow patterns are significantly associated, consistent with a narrowing of the ductus until closure. Overall, the two parameters are in good agreement but will result in different treatment decisions in some cases. Clinicians might consider using both methods as a cross check against each other, to assist in the management of preterm infants with a clinically detectable PDA.
机译：早产儿的动脉导管未闭（PDA）通常通过超声心动图参数进行评估，尤其是彩色多普勒导管直径和脉冲多普勒血流图。已经提出了临床算法，其中以大直径或特殊的血流模式指示PDA治疗，但是尚不清楚导管的直径和血流模式是否可以为婴儿提供同等的分层。回顾性评估104例婴儿（胎龄）的197张超声心动图中的这两个参数<31周）。独立检查超声心动图，并对每项研究表征PDA的内部彩色多普勒直径和脉冲多普勒血流图（记录了169条记录的两个参数）。每组中的直径差异很大，但与血流显着相关模式：肺动脉高压（PH）组的平均直径最大（2.6 mm），在成长和搏动组中逐渐缩小，而在闭合组中最小（1.3 mm）。当使用先前公布的直径对超声心动图进行分类时，PH组的82.4％的直径> 2.0 mm，在生长和搏动组中直径较大，但程度逐渐减小，而封闭组的98.1％的直径<2.0 mm。直径和流型显着相关，与导管闭合直至闭合的狭窄相一致。总体而言，这两个参数非常吻合，但在某些情况下会导致不同的治疗决策。临床医生可能会考虑使用这两种方法进行相互交叉检查，以帮助管理具有可临床检测的PDA的早产儿。

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