For several years the protease chymotrypsin has been among the available adjunctive treatments for traumatic injuries in which tissue hemorrhage and edema present a problem.1 The toxicity of this material has been studied, and it has been found to be relatively nontoxic.2 However, being protein in nature it might be expected to elicit a sensitivity reaction in susceptible persons. A survey of the literature revealed a report on only one such sensitivity reaction.3 This note constitutes a report of a reaction to aqueous chymotrypsin (Chymar) in which sufficient sensitivity was built up over nine days to produce serious anaphylactic shock.
Report of a Case
The patient was a 19-year-old man who was admitted to the University Health Center on Oct. 17, 1959, after an acute facial injury sustained in varsity football competition. A diagnosis of multiple fractures of the right maxilla was made. Because of intense edema,
Rose KD. ANAPHYLACTIC REACTION TO AQUEOUS CHYMOTRYPSIN INJECTION: DEVELOPMENT IN A PREVIOUSLY NONSENSITIVE PATIENT. JAMA. 1960;173(7):796–797. doi:10.1001/jama.1960.73020250013008e
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