EXTRAordinary Care
The patient arrived with significant pain, swelling, and ecchymosis of the right middle finger shortly after sustaining a copperhead snakebite while working in his garden. Given the early severity of symptoms, the care team made the decision to initiate antivenom therapy in accordance with clinical guidelines.
Prior to antivenom administration, allergies, dietary history, and environmental exposures were discussed with the patient. He denied any sensitivity to red meat and reported frequent outdoor activity with a history of multiple tick bites, without awareness of any alpha-gal sensitivity.
Within minutes of starting the antivenom infusion, the patient developed sudden cardiovascular collapse, including profound hypotension, tachycardia, facial flushing, and loss of responsiveness. Jason Bryant and Dr. Tim Platts-Mills were among clinicians at the bedside and quickly recognized the reaction as a life-threatening emergency. The antivenom infusion was stopped, the IV line was discontinued to prevent further exposure, and the care team moved promptly to stabilize the patient. Subsequent evaluation confirmed an IgE-mediated allergic reaction related to alpha-gal sensitivity.
Targeted life-saving interventions were initiated, including IV fluids administered under pressure, an IV epinephrine bolus followed by continuous infusion, antihistamines, and corticosteroids. Despite persistent hypotension during the initial minutes, the patient gradually stabilized and regained consciousness. Subsequent testing confirmed an IgE-mediated allergic reaction related to alpha-gal sensitivity.
Due to intolerance of the initial antivenom and ongoing venom effects, the patient was transferred to a tertiary care center where an alternative antivenom was available. Under close monitoring, he successfully received CroFab without further allergic reaction, resulting in stabilization of swelling and pain. Continued multidisciplinary care, careful reassessment, and coordinated hand surgery follow-up supported his recovery.
Through swift clinical judgment and coordinated team response, this complex snakebite case resulted in a positive outcome despite a rare and life-threatening complication. This case underscores the importance of screening for alpha-gal sensitivity in regions where tick exposure is common, particularly prior to antivenom administration.