title: [Long term consequences among children exposed to lead poisoning].
abstract: BACKGROUND
  In 1996 there was a massive lead poisoning in a southern rural community in Chile. The contamination source was a mill whose grinding stone was repaired with lead and contaminated the flour.
  
  
  OBJECTIVE
  To assess the presence of sequelae ten years later, among subjects that were exposed to lead on that occasion.
  
  
  METHODS
  Cross sectional study of 77 individuals (47 males), aged 10 to 25 years, that were exposed to lead in 1996 and were treated with EDTA.
  
  
  RESULTS
  Twenty one percent of subjects had a subnormal intelligence quotient (IQ). The risk of having a low IQ was significantly higher among those exposed before the age of six years. IQ was significantly lower among subjects that, immediately after the exposure, had a lead level over 48 microg/dl, compared with those that had a lead level below 43 microg/dl (86.7+/-7.3 and 93+/-11.6 respectively). No subjects with high blood pressure or evidences of nephrotoxicity were detected.
  
  
  CONCLUSIONS
  Subjects aged less than six years at the moment of lead exposure had a lower IQ when assessed ten years later.
authors.affiliation: Servicios de Neurología, Hospital Clínico Herminda Martín, Chillán, Chile. ccoria@ucsc.cl
authors.forename: Carolina
authors.initials: C
authors.lastname: Coria
authors.forename: Aurora
authors.initials: A
authors.lastname: Cabello
authors.forename: Enzo
authors.initials: E
authors.lastname: Tassara
authors.forename: Eduardo
authors.initials: E
authors.lastname: López
authors.forename: Hugo
authors.initials: H
authors.lastname: Rosales
authors.forename: Marcelo
authors.initials: M
authors.lastname: Pérez
authors.forename: Claudia
authors.initials: C
authors.lastname: Zavala
authors.forename: Patricio
authors.initials: P
authors.lastname: Muñoz
authors.forename: Gabriel
authors.initials: G
authors.lastname: Orellana
authors.forename: María Isabel
authors.initials: MI
authors.lastname: Inostroza
authors.forename: Lorena
authors.initials: L
authors.lastname: Contreras
authors.forename: Lilian
authors.initials: L
authors.lastname: Kirsten
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002677:Chile; D003072:Cognition Disorders / Q000139:chemically induced / Q000175:diagnosis*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007360:Intelligence / Q000502:physiology*; D020264:Lead Poisoning, Nervous System, Childhood / Q000150:complications*; D008297:Male; D055815:Young Adult