Endometrial Preparation
The process of optimizing endometrial thickness and receptivity for embryo transfer through hormonal or natural cycle monitoring.
Full Definition
Endometrial preparation is essential for successful embryo implantation in both fresh and frozen embryo transfer cycles. This process involves achieving optimal endometrial thickness (typically >7-8mm) and establishing appropriate hormonal milieu for embryo receptivity. In frozen embryo transfer cycles, preparation can follow natural ovulatory cycles with monitoring or employ hormone replacement therapy using estrogen followed by progesterone supplementation. The protocol choice depends on patient factors including ovulation patterns, convenience, and clinic preferences. Monitoring includes transvaginal ultrasound assessment of endometrial thickness and pattern, with some centers incorporating additional markers such as Doppler flow studies or endometrial receptivity arrays.
Usage
Usage note: Hyphenate when used as compound adjective; separate words when referring to the process itself.
In Context
- "Adequate endometrial preparation was confirmed with trilaminar pattern and 10mm thickness." — Pre-transfer assessment
- "The endometrial preparation protocol was modified due to thin endometrial response to standard estrogen dosing." — Cycle management documentation