title: [Efficacy and safety of zidovudine in monotherapy in patients with HIV infection].
abstract: BACKGROUND
  To study the efficacy and the tolerance of the zidovudine (ZDV) in monotherapy for the treatment of a cohort of patients with HIV infection, most of them injection-drug users (IDU).
  
  
  METHODS
  Retrospective study of a historic cohort of 350 patients, from January 1988 to December 1994. The clinic progression, the immunologic deterioriation and the survival after the ZDV administration were evaluated, like the toxicity of the drug.
  
  
  RESULTS
  The estimated progression time to AIDS for the 25% of the cohort was 29 months for the initially asymptomatic patients and 22 months for the subjects who showed symptoms. After 26 months half of the patients showed CD4 cell counts less to 50% of the basals. The cumulative survival probability after a year was 99%, 97% and 85% for the groups A, B y C of the CDC classification, and 94%, 87% and 58% after two years for these groups. The predictive factors associated with the survival were the clinic and immunologic status, ESR, LDH, and beta 2-microglobulin levels at the beginning of the treatment. The 35% of the patients suffered adverse events, mainly hematologic effects, although they only forced to suspend the treatment in the 5% of the cases. The only predictive factor associated with the toxicity was a neutrophile count less than 1.500 cells/mm3 previous to the treatment (p < 0.001).
  
  
  CONCLUSIONS
  The ZDV use in monotherapy in a cohort of patients majority IDU shows the same efficacy and safety as the treatment in other patients with HIV infection.
authors.affiliation: Unidad de Infección VIH, Hospital Universitario 12 de Octubre, Madrid.
authors.forename: J
authors.initials: J
authors.lastname: Martín Fernández
authors.forename: R
authors.initials: R
authors.lastname: Rubio García
authors.forename: F
authors.initials: F
authors.lastname: Pulido Ortega
authors.forename: A E
authors.initials: AE
authors.lastname: Crespo Garzón
authors.forename: F J
authors.initials: FJ
authors.lastname: Esteban Fernández
authors.forename: J R
authors.initials: JR
authors.lastname: Costa Pérez-Herrero
authors.forename: A
authors.initials: A
authors.lastname: del Palacio Pérez-Medel
mesh_terms: D000328:Adult; D019380:Anti-HIV Agents / Q000627:therapeutic use*; D015331:Cohort Studies; D005260:Female; D015658:HIV Infections / Q000188:drug therapy* / Q000276:immunology; D006801:Humans; D008297:Male; D012189:Retrospective Studies; D016019:Survival Analysis; D016896:Treatment Outcome; D015215:Zidovudine / Q000627:therapeutic use*
chemical_list: D019380:Anti-HIV Agents; D015215:Zidovudine