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Types of OHSS
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Types of OHSS

Ovarian hyperstimulation syndrome (OHSS) is a possible complication that can appear in those women who undergo assisted reproduction treatment and especially if it is an in vitro fertilization (IVF). The main reason is the high hormonal doses administered to the patients for ovarian stimulation and multiple follicle production. At present, OHSS is classified into 3 types according to its severity:

Firstly, the mild OHSS is the less severe form for women. This type of OHSS is characterized by a slight increase in ovarian size and in blood levels of estradiol and progesterone.

Secondly, a woman with moderate OHSS will exhibit the same symptoms as in mild OHSS, but will also show an increase in the abdomen due to the accumulation of fluid.

Finally, severe OHSS can be a health hazard for the woman. However, this type of OHSS is the least common, as the patient will be monitored by specialists at all times to avoid it. In any case, severe OHSS is characterized by high levels of estradiol and progesterone, large ovaries, abdominal enlargement, liver and kidney alterations, and even thrombotic processes can be triggered.

By MD, PhD, MSc (gynecologist), BSc, MSc (embryologist), BSc, MSc (embryologist), (gynecologist), MD (gynecologist), MD, MSc (gynecologist) and (invitra staff).
Last Update: 01/11/2021