GNRH1 and Venous thrombosis: In IVF cycles, the use of the GnRH antagonist protocol, coasting protocol, low initial gonadotropin dose, aspirin, calcium, the GnRH agonist trigger, and the whole embryo freezing strategy should be considered for patients with HOR to reduce the likelihood of OHSS, venous thrombosis, and other hazards in patients (27).