Echocardiographic evaluation of inferior vena cava diameters and collapsibility index in healthy children.

Introduction. Echocardiographic measurement of inferior vena cava diameters and collapsibility index (IVCCI) can estimate right heart chamber function and intravascular volume status. Few reports of reference values for diameters and IVCCI in the pediatric population exist.

[Partial trisomy 9p syndrome: Expanding the phenotype].

Background: Trisomy of the short arm of chromosome 9 (9p) is the fourth most common chromosomopathy. It is a partial or complete autosomal structural anomaly of the short arm of chromosome 9. It is generally caused by a reciprocal parental translocation between chromosome 9 and another autosome; spontaneous genetic alteration (de novo) is rare.