Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: What monitoring is usually needed when taking a patient off anti-coagulation therapy for surgery? e.g. CT scan, d-dimer?For reference, this family member's CHADS2-VASC score is 4.Thank you for your help. The CHADS2-VASC calculator definitely improved my understanding.. ### Response: No monitoring is needed. The idea now is to resume anticoagulation once appropriate from a surgical standpoint. Not uncommon to wait anywhere from 5-14 days post-op to resume anticoagulation depending on how bloody the procedure was..