[Early amniocentesis in prenatal diagnosis]. / Wczesna amniocenteza w diagnostyce prenatalnej.

In the period 1990-1991 483 prenatal diagnosis were carried out. Of those in 111 (23%) the technique of early amniocentesis was used, i.e. between 12th and 14th weeks of gestation. In 23 cases the result of cytogenetical diagnosis was positive. The time necessary for obtaining the result did not differ from that of amniocentesis performed at 15-20 weeks of gestation. The cytogenetical examination was successful in all cases of early amniocentesis.