title: Severe metformin intoxication with lactic acidosis in an adolescent.
abstract: A 15-year-old healthy girl ingested 38.25 g (0.55 g/kg body weight) of metformin in a suicide attempt. Subsequently she developed lactic acidosis and moderate renal failure. An initial session of haemodialysis was able to treat the acidosis and reduce the toxic level of metformin. Nevertheless, a further increase in serum lactate was observed during and after the first dialysis treatment. A second session of haemodialysis was started 5 h after the end of the first session and resulted in a lowering of the lactate level and an almost total elimination of metformin. During the further clinical course, reversible acute renal failure with a maximum creatinine of 2.4 mg/dl was observed.
  
  
  CONCLUSIONS
  Despite sufficient haemodialysis, the production of lactate can be greater than the elimination in the case of severe metformin intoxication. Therefore haemodialysis should be continued even in the situation of rising lactate levels during the treatment.
authors.affiliation: Department of Paediatrics, University Hospital Freiburg, Mathildenstrasse 1, 79106, Freiburg, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Lacher
authors.forename: Maren
authors.initials: M
authors.lastname: Hermanns-Clausen
authors.forename: Karsten
authors.initials: K
authors.lastname: Haeffner
authors.forename: Matthias
authors.initials: M
authors.lastname: Brandis
authors.forename: Martin
authors.initials: M
authors.lastname: Pohl
mesh_terms: D000140:Acidosis, Lactic / Q000139:chemically induced* / Q000628:therapy; D058186:Acute Kidney Injury / Q000139:chemically induced* / Q000628:therapy; D000293:Adolescent; D062787:Drug Overdose / Q000150:complications / Q000628:therapy; D005260:Female; D006801:Humans; D008687:Metformin / Q000506:poisoning*; D006435:Renal Dialysis / Q000379:methods; D013406:Suicide, Attempted
chemical_list: D008687:Metformin
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