What are adverse effects of heparin?

Hemorrhage (should have careful monitoring, manage by ceasing admin or treating w/protamine sulfate (perfusion)) Hypersensitivity (obtained from porcine sources and may be antigenic, possible effects include chills, fever, urticaria, and anaphylactic shock) Thrombocytopenia (serious condition, type I common mild decrease in platelet number due to non immuno mechanisms, occurs first 4-5 days and not serious Type II immunoallergic mechanism cause platelet aggregation and release)