Unit
- IVF: In vitro fertilization is a medical procedure where an egg is fertilized by sperm outside the body, in a laboratory dish. The resulting embryo is then transferred to the uterus. This process requires precise coordination between clinical and laboratory teams to optimize success rates.
- Ovarian stimulation: Patients receive hormonal medications to stimulate the ovaries to produce multiple follicles, each containing an egg. Monitoring through ultrasound and blood tests tracks follicular development and hormone levels to determine optimal timing for egg retrieval.
- Egg retrieval: A minor surgical procedure performed under sedation to collect mature eggs from the ovarian follicles using a thin needle guided by ultrasound. The retrieved eggs are immediately handed to the embryology lab for assessment and fertilization.
- Fertilization: In the lab, eggs are exposed to sperm, either through conventional insemination or intracytoplasmic sperm injection (ICSI) where a single sperm is injected directly into the egg. Fertilization is confirmed the next day by observing pronuclei.
- Embryo culture: Fertilized embryos are cultured in specialized media under controlled conditions for 3-6 days. Embryologists monitor cleavage, morphology, and development to select the best embryo(s) for transfer.
- Embryo transfer: One or more embryos are placed into the uterus using a soft catheter inserted through the cervix. This is typically performed without anesthesia and may be guided by ultrasound to ensure proper placement.
- Luteal phase support: After transfer, patients receive progesterone supplements to support the uterine lining and implantation. This continues until a pregnancy test is performed approximately 10-14 days later.
- Pregnancy test: A blood test measuring human chorionic gonadotropin (hCG) determines if implantation occurred. Positive results lead to follow-up ultrasounds; negative results prompt discussion of next steps and emotional support.
- Cryopreservation: Excess embryos of good quality can be vitrified (frozen) for future cycles. This allows patients to attempt additional transfers without repeating ovarian stimulation, improving cumulative success rates.
- Cycle cancellation: Occasionally, a cycle may be canceled due to poor response, risk of ovarian hyperstimulation syndrome, or other medical reasons. The team must communicate clearly and plan for alternative strategies.
- Preimplantation genetic testing (PGT): Embryos may undergo biopsy for genetic analysis to screen for chromosomal abnormalities or specific genetic disorders. This involves removing a few cells from the trophectoderm, followed by comprehensive chromosomal screening. Results guide embryo selection, reducing the risk of transfer failure or genetic conditions, but requires advanced laboratory expertise and counseling.
- Endometrial preparation for frozen cycles: In frozen embryo transfer cycles, the endometrium is prepared using estrogen and progesterone medications to synchronize with the embryo's developmental stage. Monitoring endometrial thickness and pattern via ultrasound ensures optimal receptivity. This tailored approach can improve implantation rates, especially for patients with irregular cycles or prior failed transfers.
- Embryo grading and selection: Embryologists assess embryos daily using standardized morphological criteria, including cell number, symmetry, fragmentation, and blastocyst expansion. Advanced techniques like time-lapse imaging provide continuous monitoring. Grades correlate with implantation potential, helping prioritize embryos for transfer or cryopreservation. Clear communication of grading to patients supports informed decisions.
Scope of Practice
Role: IVF Coordinator
Within scope:
- Educating patients about medication protocols and injection techniques
- Coordinating monitoring appointments and lab visits
- Documenting cycle dates and lab results in electronic health records
- Communicating with insurance companies for pre-authorization
- Providing emotional support and resources
Outside scope:
- Performing ultrasound or blood draws (clinical staff)
- Making medical decisions regarding medication dose adjustments
- Diagnosing causes of infertility
- Counseling on genetic testing results without a genetic counselor
- Prescribing medications
Quick Revision
- IVF involves ovarian stimulation, egg retrieval, fertilization, embryo culture, transfer, and luteal phase support.
- Coordination between clinical and lab teams is critical for cycle success.
- Cryopreservation offers future transfer options without repeated stimulation.
- Cycle cancellation may occur and requires sensitive communication.
Disclaimer
Educational use only. Not intended for practical surgery, incisions, or other surgical procedures. It does not qualify you to perform physical operations.