View clinical trials related to Protamine Adverse Reaction.
Filter by:Determining the minimum effective dose of protamine after extracorporeal circulation for mini-sternotomy aortic valve replacement surgery.
Protamine remains the anticoagulant of choice for cardiopulmonary bypass (CPB). The process of protamine neutralization of heparin came with the side effects sometimes; it can be life threatening or fetal reaction. The adverse cardiopulmonary response of protamine has been observed during entire history of clinical cardiac surgery. The true mechanism reaction is difficult to defined and the complexity of the clinical situation The classification of protamine reaction has been divided in to main 3 types (transient systemic hypotension secondary to rapid administration, anaphylactic and anaphylactoid reaction and catastrophic pulmonary vasoconstriction. The reaction from pharmacologic histamine release is the most common type of reaction. Protamine was believed to induce hypotension by this mechanism, and it was demonstrated to release histamine by degranulation of isolated mast cells From the hypothesis that the systemic hypotension cause by the released of histamine. The investigators will measure the serum tryptase which is the enzyme that released from degranulation of human mast cell. Comparing the serum tryptase level of the patient at baseline, 30 min and 60 min after protamine was given. There for the hypothesis of this study is administrating of H1 and H2 blocker helps attenuate the drop in MAP after protamine is given.
The investigators aim to assess tryptase test efficacy for measuring the allergic response to protamine during cardiac bypass surgery. Additionally, the investigators aim to establish a differential diagnosis on the basis of potential allergens or clinical causes.