Ectopic Pregnancy Clinical Trial
Official title:
Are Serum Levels of Vascular Endothelial Growth Factor a Marker for the Early Diagnosis of Ectopic Pregnancy?
OBJECTIVE: This study evaluated serum vascular endothelial growth factor (VEGF)
concentrations in women with ectopic pregnancy (EP), abnormal intrauterine pregnancy (aIUP)
and normal intrauterine pregnancy (nIUP).
METHODS: This was a prospective, case-control study comparing serum VEGF concentrations
among 72 women with ectopic pregnancy (n=35), abnormal IUP (n=15) and normal IUP (n=22)
matched for gestational age. For the determination of serum VEGF concentration a solid phase
sandwich ELISA was used. Patients were stratified according to serum VEGF above or below
200pg/mL.
RESULTS: The serum level of VEGF was significantly higher in women with ectopic pregnancy
(median 211.1 pg/mL; range 5 - 1017.0 pg/mL) than in women with normal IUP (median 5 pg/mL;
range 5- 310.6 pg/mL) P < 0.0001. Serum VEGF concentrations did not show any statistically
significant difference between women with aIUP (median 231.9 pg/mL range 5 - 813.7 pg /mL )
and EP (median 211.1 pg/mL range 5 - 1017.0 pg/mL). When cut-off concentrations of 200 pg/mL
for VEGF were used, a nIUP could be distinguished from an unviable (EP and aIUP) with a
sensitive of 53%, specificity of 90.9%, a positive predictive value of 92.9% and a negative
predictive value of 46.5%..
CONCLUSIONS: Serum VEGF could not distinguish between an EP and an aIUP. However, serum VEGF
concentrations above 200 pg/mL could discriminate a nIUP from an unviable pregnancy (EP or
aIUP) with a PPV of 92.9%.
n/a
Observational Model: Case Control, Time Perspective: Prospective
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