Two-dimensional echocardiographic evaluation of right ventricular size and function in newborns with severe right XXXX .

@entity1 @entity3585 @entity849 @entity299 @entity1146 @entity67
@entity849 or @entity1146 with intact @entity67 represents a @entity299 for which the long-term prognosis appears to depend partly on the size of the right ventricle. Thus, the capability of noninvasive assessment of right ventricular size to predict operative outcome was examined in 15 @entity1 (aged 1 to 30 days, mean 5.6) with severe right @entity3585 (either @entity849 [7 @entity1 ] or @entity1146 with intact @entity67 [8 @entity1 ]). Using echocardiography in two orthogonal subxiphoid views, right ventricular volume, wall thickness, area change fraction, ejection fraction and tricuspid anulus dimension were measured. All @entity1 with a normalized right ventricular enddiastolic volume of less than 5 ml/m2 and a normalized tricuspid anulus dimension of less than 1.0 cm/m2/3 required a shunt operation. Only one @entity1 with a volume of more than 6 ml/m2 and a normalized tricuspid anulus dimension of more than 1.4 cm/m2/3 required more than relief of right @entity3585 . In this @entity1 , residual severe @entity849 necessitated the shunt procedure. One @entity1 with a volume of more than 6 ml/m2 had an anulus diameter of less than 1.4 cm/m2/3 and one @entity1 with an anulus diameter of more than 1.4 cm/m2/3 had a volume of less than 6 ml/m2; both required shunt procedures. It therefore appears that if either the ventricular volume or tricuspid anulus size is excessively small, a shunt procedure is necessary. Wall thickness, area change fraction and ejection fraction measurements were not significantly correlated with right ventricular volume or postoperative outcome.(ABSTRACT TRUNCATED AT 250 WORDS)
