Establishment of new index for prediction of the implantation success rate, combining the endometrial thickness, the size of the uterus and their ratio

Establishment of new index for prediction of the implantation success rate, combining the endometrial thickness, the size of the uterus and their ratio: Prospective analyse in 100 IVF/ICSI cycles

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ISRCTN

Registry ID

ISRCTN19411490

Enrollment

100

Registered

2016-11-21

Start date

2016-12-01

Completion date

Unknown

Last updated

2016-12-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Sterility treatment Pregnancy and Childbirth Sterility treatment

Interventions

During the routine follow up in their IVF/ICSI cycle, women undergo a transvaginal ultrasound on day 2-3, 6-8 and 10-11 of the cycle. The duration of the ultrasound exam is about 10 minutes and the me

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: 1. Women 2. Undergoing fertility treatment by stimulated IVF/ICSI, using the Antagonist Protocols 3. Transfer done on day 5 after the ovum pick up 4. Aged 20-45 years

Exclusion criteria

Exclusion criteria: 1. Large or multiple fibroids 2. Uterine anomalies 3. Extremely small uterus APDUC bellow 25mm 4. BMI outside the range 19 - 29

Design outcomes

Secondary

Measure	Time frame
IVF/ICSI success rate is measured using ßhCG on 10-13 day after the embryo transfer (to prove biochemical pregnancy) and transvaginal ultrasound on the day 20-25 after the embryo transfer (to prove clinical pregnancy).	—

Primary

Measure	Time frame
1. Endometrium thickness is measured using transvaginal ultrasound before the start of an IVF/ICSI cycle, and then on day 2-3, 5-8 and 9-11 of the IVF/ICSI cycle. 2. Uterine size is measured using transvaginal ultrasound before the start of an IVF/ICSI cycle, and then on day 2-3, 5-8 and 9-11 of the IVF/ICSI cycle	—

Countries

Bulgaria

Contacts

Public ContactGeorgi Stanulov

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026