The cause of sudden cardiovascular collapse in the perioperative period can be elusive. Allergy may be overlooked as a cause. When allergy is considered, latex is often suspected. Because hetastarch is frequently used in situations involving hypovolemia and hypotension, and because allergic reactions to it are rare, it may be overlooked as a possible allergen. We report a case of a patient suffering cardiovascular decompensation during four nonconsecutive perioperative periods before it was determined that she was allergic to hetastarch. She also had a very highly positive latex radioallergosorbent test, suggesting a latex allergy.
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