Successful Management of Two Patients with Intracranial Hemorrhage due to Carpet Viper (Echis ocellatus) Envenomation in a Limited-Resource Environment

• Published in: Wilderness & environmental medicine Vol. 30; no. 3; pp. 295 - 301
• Main Authors: Benjamin, Jordan M., Chippaux, Jean-Philippe, Tamou-Sambo, Bio, Akpakpa, Olouchégoun Cardinal, Massougbodji, Achille
• Format: Journal Article
• Language: English
• Published: Los Angeles, CA Elsevier Inc 01.09.2019; SAGE Publications
• Subjects: Animals; Antivenins - therapeutic use; antivenom; Benin; Child; Female; Humans; Immunologic Factors - therapeutic use; Intracranial Hemorrhages - etiology; Intracranial Hemorrhages - therapy; Male; neglected tropical disease; Snake Bites - therapy; snake envenomation; snakebite; Treatment Outcome; venom-induced consumption coagulopathy; Viper Venoms - antagonists & inhibitors; Viperidae; whole blood clotting test; Benin; snake envenomation; whole blood clotting test; neglected tropical disease; antivenom; venom-induced consumption coagulopathy; snakebite
• ISSN: 1080-6032; 1545-1534
• DOI: 10.1016/j.wem.2019.04.003

The West African carpet viper (Echis ocellatus) causes more deaths than any other snake in sub-Saharan Africa. Carpet viper envenomations are characterized by a venom-induced consumption coagulopathy and systemic bleeding syndrome, in addition to local symptoms of painful progressive swelling and tissue destruction. The highest mortality rate is seen in the final stages of the syndrome, which typically ends with fatal internal bleeding or hemorrhagic shock. We present 2 cases of E ocellatus envenomation with intracranial hemorrhage seen at a rural hospital in Bembèrèkè, Benin, and describe the successful management of these patients in a limited-resource setting. In one case the patient was treated with an ineffective Indian-made antivenom before evaluation by the authors and continued to deteriorate until she was treated with effective antivenom 10 d after the bite. In both cases lumbar puncture was performed for diagnostic or therapeutic purposes with good effect, and both patients made full recoveries without sequelae. These cases demonstrate the remarkable ability of high-quality antivenoms to reverse life-threatening envenomations even in the final stages of the hemorrhagic syndrome and illustrate the dangers posed by low-quality antivenoms that have flooded the market in the developing world.