OHSS Feature:enlarged ovarian and increased permeability of capillary 。Pathology: Body fluid exudation Hydrothorax and ascites Hypovolemia,hemoconcentration,electrolyte disturbance, and thrombus Liver and kidney function is damaged 5OHSS • Feature： enlarged ovarian and increased permeability of capillary • Pathology： Body fluid exudation Hydrothorax and ascites Hypovolemia, hemoconcentration, electrolyte disturbance, and thrombus Liver and kidney function is damaged 5