ComplicationsBy Mayo Clinic staff
About 1 to 2 percent of women undergoing ovarian stimulation develop a severe form of ovarian hyperstimulation syndrome. Complications of severe OHSS may include:
- Fluid collection in the abdomen (ascites) and sometimes the chest
- Electrolyte disturbances (sodium, potassium, others)
- Blood clots in large vessels, usually in the legs
- Kidney failure
- Twisting (torsion) of an ovary
- Rupture of a cyst in an ovary, which can lead to serious bleeding
- Breathing problems (acute respiratory distress syndrome)
Some of these complications may be life-threatening, but OHSS is unlikely to be fatal. Severe OHSS may increase the chance of pregnancy loss, either through miscarriage or termination because of complications.
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