https://www.selleckchem.com/products/n-formyl-met-leu-phe-fmlp.html Although 58.7% of the physicians were aware that cryopreservation of eggs and sperm prior to chemotherapy was recommended, only 7 out of 40 physicians (17.5%) had referred AYA patients with cancer to an appropriate medical facility (department) after obtaining informed consent for chemotherapy. Although fertility preservation has been discussed at professional conferences and seminars, consideration and actions in the field of otorhinolaryngology/head and neck surgery have not been sufficient. We hope that the results of this survey will help raise awareness of fertility preservation. Although fertility preservation has been discussed at professional conferences and seminars, consideration and actions in the field of otorhinolaryngology/head and neck surgery have not been sufficient. We hope that the results of this survey will help raise awareness of fertility preservation. Conventional coagulation tests, such as prothrombin time and activated partial thromboplastin time, are not sensitive to anticoagulation by apixaban. We evaluated the antithrombotic effect of apixaban using a Russell viper venom (RVV) test for a patient who underwent posterior spine fusion surgery. An 84-year-old man was scheduled for percutaneous posterior spine fusion. He continued apixaban until the night before surgery and resumed it on the first day after surgery. We performed an RVV test as point-of-care coagulation monitoring in combination with chromogenic anti-activated factor X (anti-Xa) activity, prothrombin time, and activated partial thromboplastin time. Clotting time with the RVV test was prolonged according to the anti-Xa activity of apixaban, which was in the therapeutic range during surgery. An RVV test might be useful as a point-of-care assay for estimation of the anti-Xa level induced by apixaban during the perioperative period. An RVV test might be useful as a point-of-care assay for estimation of the anti-Xa