In Vitro Fertilization Cycle Stimulation

University of Vienna, Austria

Nothing says "mission critical" like the precise timing for cycle stimulation needed in infertility diagnosis and treatment. Below are the results from an expert system that was presented at the World Congress of In Vitro Fertilization and Embryo Transfer.

The following factors were built into the system:

• Cycle day
• Urinary luterinizing hormone (LH)
• Yesterday's and today's serum-estradiol (E2)
• Yesterday's and today's progesterone (P)
• Increase of E2 and P
• The number and size of sonographically measured follicles

The system displayed the correct choice in over 90% of extensive testing It is the opinion of many doctors that this expert system presents a valuable tool to simplify routine procedures in IVF programs. It is also used as a teaching instrument for residents. This system dramatically speeds up decision processes for treatment which is so important to anxious patients, often at their limits of time and resources.