Pregnancy prediction via ultrasound-detected endometrial blood for hormone replacement therapy-frozen embryo transfer: a prospective observational study

Table 3 Comparison of changes in endometrial blood flow indices from the day of progesterone administration to the day before embryo transfer between pregnant and non-pregnant patients

Parameters	Pregnant group	Non-pregnant group	P-value
Number of patients	174	116	---
Change in EMBLP (n, %)			0.269
N-Change	148 (85.06)	93(80.17)
Type I-II	3 (1.72)	5(4.31)
Type I-III	1(0.57)	3(2.58)
Type II-III	22 (12.64)	15(12.93)
Change in EMBLB(n, %)			0.774
N-Change	134(77.01)	91 (78.45)
Increment	40 (22.99)	25 (21.55)

N-Change: no significant change in parameters at two time points. Type I-II: endometrial blood flow pattern from I on the day of progesterone administration to II on the day before embryo transfer. Increment: blood flow branches from < 5 on the day of transformation to ≥ 5 on the day before transfer. Abbreviations: EMBLP, endometrial blood flow pattern; EMBLB, endometrial blood flow branches

ISSN: 1477-7827