Publications des scientifiques de l'IRD

Chippaux Jean-Philippe, Lang J., Amadi Eddine S, Fagot P., Rage V., Peyrieux J.C., Le Mener V. (1998). Clinical safety of a polyvalent F(ab')2 equine antivenom in 223 African snake envenomations : a field trial in Cameroon. Transactions of the Royal Society of Tropical Medicine and Hygiene, 92 (6), p. 657-662. ISSN 0035-9203.

Titre du document
Clinical safety of a polyvalent F(ab')2 equine antivenom in 223 African snake envenomations : a field trial in Cameroon
Année de publication
1998
Type de document
Article
Auteurs
Chippaux Jean-Philippe, Lang J., Amadi Eddine S, Fagot P., Rage V., Peyrieux J.C., Le Mener V.
Source
Transactions of the Royal Society of Tropical Medicine and Hygiene, 1998, 92 (6), p. 657-662 ISSN 0035-9203
A large-scale clinical trial was conducted, according to World Health Organization Good Clinical Practice guidelines, in 7 centres in North Cameroon to determine the safety and efficacy of a polyvalent antivenom composed of purified F(ab')2. This study included 223 patients presenting clinically with an obvious snake bite, predominantly due to Echis ocellatus (viper), the most abundant species in this savannah region. Clinical surveillance was maintained for 5 d in all patients and until the twenty-sixth day in 74% of cases. Two 10 mL ampoules of polyvalent F(ab')2 equine antivenom (Ipser Africa (TM)) were administered to each patient by intravenous infusion. If necessary, treatment was repeated 1 h after the end of the first infusion, and then with a frequency determined by the patient's clinical condition. Before initiation of antivenom treatment, the main clinical disorders observed on admission were oedema (93.7%) and haemorrhage (48.9%), with a clotting time longer than 30 min in 65.4% of patients. Clincal cure was obtained in 213 patients (96.8%). No amputation was necessary, and the case fatality rate was only 1.3%. On average, 4.6 (+ or - 3.7) ampoules were administered per patient ; 43% of subjects recovered after only a single infusion of 2 ampoules. Early adverse reactions, of varying degrees of severity, were observed in 6.3% of patients. A severe early reaction, anaphylactic shock, was observed in only one patient (0.4%). Serum sickness was observed in another patient. Polyvalent F(ab')2 equine antivenom given by repeated 20 mL intravenous infusions is a safe and effective treatment for envenomation caused by African vipers. (Résumé d'auteur)
Plan de classement
Médecine [050MEDECI]
Descripteurs
ESSAI CLINIQUE ; TRAITEMENT MEDICAL ; EFFICACITE ; VENIN ; SERPENT ; ENVENIMATION ; SEROTHERAPIE ; PROTOCOLE D'UTILISATION ; EFFET SECONDAIRE
Description Géographique
CAMEROUN NORD
Localisation
Fonds IRD [F B010017807] ; Montpellier (Centre IRD)
Identifiant IRD
fdi:010017807
Contact