How long should a patient with COVID-19 vaccine-induced thrombotic thrombocytopenia be treated with anticoagulation?  

-Can these patient receive heparin in the future?

-How would duration of anticoagulation change if the patient were a young female seeking pregnancy or use of OC in the future?

-Are there any cases of major bleed (e.g. intracranial bleed) associated with extensive thrombosis related to the vaccine (J and J)?