title: Inter-NICU variation in rates and management of thrombocytopenia among very low birth-weight infants.
abstract: OBJECTIVE
  To investigate variation among neonatal intensive care units (NICUs) in prevalence and management of thrombocytopenia in infants <1500 g.
  
  
  METHODS
  In total 1283 infants &<1500 g admitted to six NICUs over 21 months were prospectively analyzed. Illness severity was measured by the Score for Neonatal Acute Physiology (SNAP). Platelet counts in the first 12 hours after birth and on day 3 of life were abstracted from the infants' medical records. Thrombocytopenia was determined from the lowest platelet count in each of these time periods.
  
  
  RESULTS
  There was variability in rates of thrombocytopenia among NICUs, even after controlling for risk factors (e.g., SNAP, small for gestational (SGA) age and maternal hypertension). One site had a high prevalence of thrombocytopenia, but the lowest percentage of infants with thrombocytopenia who received platelet transfusions. After controlling for SNAP, GA, SGA, Apgar score and incidence of thrombocytopenia, the odds of receiving platelets at this site, relative to the site with the highest transfusion rate, was 0.10 (95% CI 0.02 to 0.43).
  
  
  CONCLUSIONS
  This multicenter study finds a 10-fold variation among NICU in the administration of platelets to their thrombocytopenic infants that cannot be explained by presence of thrombocytopenia or illness severity.
authors.affiliation: Division of Hematology, the Albert Einstein College of Medicine, Bronx, NY 10461, USA.
authors.forename: Doron J
authors.initials: DJ
authors.lastname: Kahn
authors.forename: Douglas K
authors.initials: DK
authors.lastname: Richardson
authors.forename: Henny H
authors.initials: HH
authors.lastname: Billett
mesh_terms: D015331:Cohort Studies; D006801:Humans; D007231:Infant, Newborn; D019102:Infant, Very Low Birth Weight; D007363:Intensive Care Units, Neonatal / Q000706:statistics & numerical data*; D020300:Intracranial Hemorrhages / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control*; D017713:Platelet Transfusion; D010818:Practice Patterns, Physicians' / Q000706:statistics & numerical data*; D015995:Prevalence; D011446:Prospective Studies; D012720:Severity of Illness Index; D013921:Thrombocytopenia / Q000150:complications / Q000453:epidemiology* / Q000628:therapy*; D016896:Treatment Outcome