[Normal values of gases in the vein of the umbilical cord during the postpartum period and postcesarea immediately in normal fetuses to term].

Background: To be able to diagnose and catalogue a patient with imbalance of the acid basic condition a gasometría must be realized. The pH and the gasometría of the blood of umbilical cord are useful tools to study the immediate situation of the newborn child. The values gasométricos in the vein and the artery of the umbilical cord change according to the geographical altitude.

[Antiphospholipid syndrome and human reproduction].

Recurrent pregnancy loss is secondary to multiple illnesses. An important cause sometimes undiagnosed is the antiphospholipid syndrome, an autoimmune disease with various clinical alterations (miscarriage, hypertensive disorders, preterm delivery, vascular thrombosis, intrauterine retard growth, death intrauterine, abruption placentae). There are major and minor clinical criteria and precise indications that guide the physician to its recognition.