Professional
Technical
In the Industry Vocabulary Test
Controlled Ovarian Stimulation
Also written as: COS — Controlled Ovarian Stimulation
Hormonal treatment to induce multiple egg development for fertility procedures.
Full Definition
Controlled ovarian stimulation involves the administration of fertility medications, typically gonadotropins, to stimulate the ovaries to produce multiple mature eggs in a single cycle. This process is essential for IVF and other assisted reproductive procedures, as it increases the number of available eggs for retrieval. The stimulation is carefully monitored through blood tests and ultrasound examinations to optimize timing and prevent complications such as ovarian hyperstimulation syndrome.
Usage
Usage note: Distinguish from simple ovulation induction, which aims for single egg release.
In Context
- "The COS protocol was adjusted based on the patient's previous poor response to gonadotropins." — treatment plan
- "Controlled ovarian stimulation requires daily monitoring during the final week of treatment." — patient education material
Also known as
ovarian hyperstimulation
superovulation
Contrasted with
natural cycle
Don't confuse with
ovulation induction
ovarian stimulation