title: [Anaphylactoid shock during intravenous urography. Possible interaction between complement and fibrinolytic systems (author's transl)].
abstract: Shock associated with deep coma was induced by an injection of methylglucamine iodotalamate for descending urography to a 56-years old man without any history of atopy. Under intensive care the acute symptoms were controlled, and consciousness returned to a normal level within 15 days, but the patient remained with right-side monoplegia. Biological investigations showed a fall in total haemolytic complement (CH50) and in C1, C4, C2 and C3 components, as well as in B-factor. Acute fibrinolysis and hypocalcaemia were also present. Two main mechanisms seem to be responsible for the accident : intolerance to the drug, with direct activation of the complement and fibrinolytic systems ; and an immuno-allergic reaction where the contrast medium behaved like an hapten, which became antigenic in the body.
mesh_terms: D000707:Anaphylaxis / Q000097:blood / Q000209:etiology* / Q000276:immunology; D003165:Complement System Proteins / Q000032:analysis*; D005342:Fibrinolysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D014567:Urography / Q000009:adverse effects*
chemical_list: D003165:Complement System Proteins
vernacular_title: "Choc anaphylactoïde" au cours d'une urographie par voie veineuse. Interférence possible entre les systèmes complémentaire et fibrinolytique.