ABA ADVANCED Exam Practice Questions - American Board Of Anesthesiology ADVANCED Exam (Stage 2 Of 3) Exam

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Within minutes of administering protamine after cardiopulmonary bypass, the patient develops profound hypotension and elevated pulmonary artery pressures. The most likely explanation is:

Type I reaction with histamine release from rapid infusion Type III catastrophic pulmonary vasoconstriction reaction Calcium-induced coronary vasospasm Heparin rebound

Correct Answer:

Type III catastrophic pulmonary vasoconstriction reaction

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