[Central venous catheterization--experiences in neonatal intensive medicine based on scanning electron microscopy study of Silastic catheters].

This article deals with the use of 56 silastic-catheters in the intensive care of premature and new-born with mean weights of 1550 g according to the Shaw-method. The clinical use with regard to early and late complications was studied by means of scanning electron microscopy of 11 catheters. The results were compared with the complications associated with PVC-catheters.

[Aneurism of ductus arteriosus Botalli in a newborn (author's transl)].

A case of patent ductus arteriosus in a newborn is presented. This malformation could be clasified as belonging to the group of ductal aneurysms with an obstructed pulmonary end. Only 13 similar cases have been previously described in the literature.

[The requirements of vitamin D (cholecalciferol) and of 25-hydrocalciferol (25HCC) in premature children during their early life (author's transl)].

The necessary daily amount of vitamin D3 in premature infants was calculated by Hövels and his group as being 25 mcg (1000 I.U.).