Showing papers by "Roberto Romero published in 1981"

TL;DR: The hCG level that distinguishes patients with intrauterine pregnancies in whom a gestational sac can be seen from those in whom it cannot be seen was determined and designated as the discriminatory hCG zone, which lies between 6000 and 6500 mlU/ml.

TL;DR: The possibility of distinguishing between normal intrauterine and ectopic pregnancies by determining the lower limit of the rate of human chorionic gonadotropin (hCG) increase in early pregnancy was investigated.

TL;DR: An attempt was made to definitively treat 18 patients with ectopic pregnancy utilizing laparoscopic techniques, which represents an alternative to the treatment of unruptured tubal ectopic pregnancies in early gestation.

TL;DR: A decline in AFP titers to less than 20 ng/ml, followed by any subsequent elevation, is an ominous finding suggestive of recurrent or progressive disease and requires prompt diagnostic evaluation and change in management.