The relationship between unexplained elevated serum markers in triple test, uterine artery Doppler measurements and adverse pregnancy outcome.

Objective: To investigate the relationship between adverse pregnancy outcomes and unexplained elevations of second trimester maternal serum human chorionic gonadotropin (hCG), alpha fetoprotein (AFP) levels and uterine artery Doppler measurements.

Methods: A total of 144 women between 16-20 weeks of gestation that applied to our clinic for triple test were enrolled into the study. Study group consisted of 84 pregnant women with hCG and/or AFP levels > or =2 MoM. Control group comprised of 60 pregnant women with hCG and AFP levels <2 MoM. Study group was further subdivided into 3 subgroups: Subgroup I; only AFP> or =2 MoM (n=30), subgroup II; only hCG > or =2 MoM (n=64) and subgroup III; both AFP and hCG > or =2 MoM (n=10).

Results: Operative delivery rate (p = 0.0017), overall complication rate (p=0.0002), bilateral early diastolic notch presence rate (p = 0.015) were high and mean birth weight was low (p=0.045) in the study group. In subgroup I patients, low birth weight [LBW] (p = 0.0008), preterm delivery (p = 0.0001), preeclampsia (p = 0.003) and preterm premature rupture of membranes [PPROM] (p = 0.012) rates were high. In subgroup II patients, only small for gestational age baby [SGA] (p = 0.016) rate was high. In subgroup III patients LBW (p = 0.009), preterm delivery (p = 0.0001) and PPROM (p = 0.01) rates were high. According to Doppler velocimetry studies, bilateral early diastolic notch presence rate was high (p = 0.015) in the study group.

Conclusions: Patients with high AFP levels and bilateral uterine artery diastolic notch presence, are candidates for pregnancy complications and these groups of patients should be followed up more intensively.