Characteristics | Poor blood flow group (n = 56) | Abundant blood flow group (n = 59) | P-valuea |
---|---|---|---|
Maternal age (years) | 32.4 ± 7.9 | 33.1 ± 9.3 | 0.413 |
BMI (kg/m2) | 22.5 ± 4.9 | 23.2 ± 5.0 | 0.769 |
Number of pregnancies | 2.2 ± 0.8 | 2.2 ± 0.7 | 0.802 |
Number of deliveries | 1.0 ± 0.4 | 0.9 ± 0.5 | 0.613 |
Pregnancy method | 0.866 | ||
Natural conception | 49 (87.5) | 51 (86.4) | |
ART | 7 (12.5) | 8 (13.6) | |
Risk factors of EP | |||
Previous EP | 3 (5.4) | 5 (8.5) | 0.511 |
Pregnant with IUD | 4 (7.1) | 3 (5.1) | 0.645 |
Duration of pregnancy (days) | 46.6 ± 7.1 | 48.3 ± 8.2 | 0.598 |
Clinical symptoms | |||
Abdominal pain | 47 (83.9) | 48 (81.4) | 0.716 |
Vaginal bleeding | 51 (91.1) | 54 (91.5) | 0.931 |
Pretreatment β-hCG (mIU/mL) | 1365.6(769.2–2824.5) | 1403.2(813.1–2902.5) | 0.497 |
Pretreatment progesterone (nmol/L) | 26.7(15.8–46.9) | 42.3(23.7–71.5) | 0.041 |
Ultrasound findings | |||
Average diameter of ectopic mass (cm) | 2.1(1.3–3.2) | 2.3(1.6–3.5) | 0.764 |
Yolk sac | 11 (19.6) | 14 (23.7) | 0.928 |
Free fluid in Douglas cavity | 44 (78.6) | 46 (78.0) | 0.937 |