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JCDR. 2021; 12(3): 1778-1788


Evaluation of endometrial and sub-endometrial vascularity by transvaginal 3D Power Doppler in prediction of pregnancy outcome in intracytoplasmic sperm injection cycles

Mohamed Hani Mosbeh, Mohamed Tawfik, Emad M. Ibrahim, Hosny M, Ahmed Mohammed Abdallah.


Abstract

Objective:
Successful implantation depends on a close interaction between a blastocyst and endometrial receptivity. Endometrial vascularity is of a prime importance for endometrial receptivity and embryo transfer.
The aim of this study is to evaluate the role of endometrial and sub-endometrial blood flow measured by three-dimensional Power Doppler ultrasound on the day of oocyte retrieval in predicting pregnancy following intracytoplasmic sperm injection ( ICSI ) cycles.
Patients & Methods:
This prospective study included 100 infertile women who underwent a first ( ICSI ) at Minia University Hospital and Nile Infertility Center, using a Gn-RH long protocol with stimulation by a recombinant FSH ( r-FSH ) from July 2019 to June 2020. Endometrial and sub-endometrial blood flow were measured using 3D Power Doppler ultrasound on the day of oocyte retrieval. The 3D Power Doppler indices – vascularization index ( VI ), flow index
( FI ) and vascularization flow index ( VFI ) were obtained and compared between the pregnant and non-pregnant groups.
The primary outcome was clinical pregnancy defined as the presence of intra-uterine gestational sac 4 weeks after embryo transfer. The secondary outcomes were chemical pregnancy, total r-FSH dosage and duration of gonadotropin induction.
Results:
There were no statistically significant differences in the clinical characteristics including maternal age, duration and type of infertility, body mass index ( BMI ), basal hormonal profile ( FSH, LH, E₂ levels ), total r-FSH dosage, number of retrieved oocytes, endometrial thickness or volume and number of good quality embryos between pregnant and non-pregnant groups ( P < 0.05 for each ).
Pregnant women had higher endometrial VI, FI and VFI indices and predictive values than the non-pregnant women ( 0.93. 12.9, 0.14 respectively, P > 0.01 ).
By contrast, no statistically significant differences in the sub-endometrial ( VI, FI and VFI ) indices were observed between the pregnant and non-pregnant groups
( P < 0.05 for each ). In comparing the diagnostic indices and predictive values of the 3D Power Doppler ultrasound parameters of endometrial blood flow in predicting pregnancy in ICSI cycles, the FI at a cut-off value < 12.9 had the highest values ( sensitivity 89.7 %, specificity 81.7 %, PPV 76.1 %, NPV 92.5 % and diagnostic accuracy 85 % ) compared to VI ( sensitivity 76.9 %, specificity 75.4 %, PPV 66.6 %, NPV 83.6 % and diagnostic accuracy 76 % ) and VFI ( sensitivity 66.7 %, specificity 73.8 %, PPV 61.9 %, NPV 77.6 % and diagnostic accuracy 71 % ).
Conclusion: The 3D Power Doppler ultrasound is a useful, effective and non-invasive tool for assessing endometrial blood flow in ( ICSI ) cycles. On comparing the diagnostic indices and predictive values of 3D Power Doppler ultrasound parameters of endometrial and sub-endometrial blood flow, good endometrial blood flow on the day of oocyte retrieval was a good predictor of pregnancy in ( ICSI ) cycle. In addition, no correlation was observed between sub-endometrial blood flow and pregnancy.


Obstetrics and Gynaecology dept., Faculty of Medicine, Minia University, Egypt
Address correspondence and reprint request to: Ahmed Mohammed Abdallah

Key words: Endometrial,Subendometrial,Vascularity, 3D Power Doppler, Prediction, Pregnancy outcome,ICSI






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