Survival and mortality among users and non-users of hydroxyurea with sickle cell disease

Rev Lat Am Enfermagem. 2015 Jan-Feb;23(1):67-73. doi: 10.1590/0104-1169.3385.2526.
[Article in English, Portuguese, Spanish]

Abstract

Objective: to estimate survival, mortality and cause of death among users or not of hydroxyurea with sickle cell disease.

Method: cohort study with retrospective data collection, from 1980 to 2010 of patients receiving inpatient treatment in two Brazilian public hospitals. The survival probability was determined using the Kaplan-Meier estimator, survival calculations (SPSS version 10.0), comparison between survival curves, using the log rank method. The level of significance was p=0.05.

Results: of 63 patients, 87% had sickle cell anemia, with 39 using hydroxyurea, with a mean time of use of the drug of 20.0±10.0 years and a mean dose of 17.37±5.4 to 20.94±7.2 mg/kg/day, raising the fetal hemoglobin. In the comparison between those using hydroxyurea and those not, the survival curve was greater among the users (p=0.014). A total of 10 deaths occurred, with a mean age of 28.1 years old, and with Acute Respiratory Failure as the main cause.

Conclusion: the survival curve is greater among the users of hydroxyurea. The results indicate the importance of the nurse incorporating therapeutic advances of hydroxyurea in her care actions.

MeSH terms

  • Adolescent
  • Adult
  • Anemia, Sickle Cell / drug therapy*
  • Anemia, Sickle Cell / mortality*
  • Child
  • Child, Preschool
  • Cohort Studies
  • Female
  • Humans
  • Hydroxyurea / therapeutic use*
  • Male
  • Middle Aged
  • Retrospective Studies
  • Survival Rate
  • Young Adult

Substances

  • Hydroxyurea