Values of biochemical and sonographic parameters in early pregnancy in women with a history of recurrent abortions

Abstract

Changes in biochemical values of pregnancy hormones affect dimensions of analyzed sonographic parameters. During uncomplicated pregnancy, levels of chorionic gonadotropin, progesterone and estradiol affect mean gestation-sac diameter, embryo length, depth of trophoblast invasion and formation and function of vitelline sac, and thus they alter the embryonic heart rate.

Ruptured corpus luteum cyst in early pregnancy: A case report

“…Due to non-specific nature of negative pregnancy scan, discriminatory zones of hCG were introduced [2,3]. The concept of combining ultrasound with hCG testing using the discriminatory zones has been well described in literature [4][5][6][7][8][9]. Nevertheless, discriminatory levels are without clear cut-off values and range from 1,000 to 2,500 IU/L for transvaginal sonography.…”