Association of thrombocytopenia and delivery method with intraventricular hemorrhage among very-low-birth-weight infants

Doron J. Kahn, Douglas K. Richardson, Henny H. Billett

Research output: Contribution to journalArticle

21 Scopus citations


OBJECTIVES: To investigate the significance of neonatal thrombocytopenia and delivery method on the incidence of intraventricular hemorrhage in infants weighing <1500 g. STUDY DESIGN: A total of 1283 infants weighing <1500 g who were admitted to six neonatal intensive care units over 21 months were analyzed prospectively. Illness severity was measured by the Score for Neonatal Acute Physiology (SNAP). RESULTS: Of the infants analyzed, 145 (11.3%) had thrombocytopenia (platelet count <100 × 109/L). The incidence of intraventricular hemorrhage was greater among infants with thrombocytopenia than among those without (44.8% vs 23.9%, P < .0001). Nonthrombocytopenic infants who were delivered vaginally had a higher incidence of intraventricular hemorrhage than those delivered via cesarean section (35.8% vs 15.9%, P < .0001). Thrombocytopenic infants who were delivered vaginally had the highest incidence of intraventricular hemorrhage (63.4% vs 37.5% for cesarean section, P = .005). Vaginal delivery and platelets < 50×109/L on day 1 were independent risk factors for intraventricular hemorrhage (OR 2.7, 95% Cl 2.0-3.8 and OR 11.2, 95% Cl 3.0-42.5, respectively). CONCLUSIONS: This multicenter study confirms that thrombocytopenia and intraventricular hemorrhage are not uncommon in neonates who weigh <1500 g, and that the incidence of intraventricular hemorrhage is higher in those thrombocytopenic infants delivered vaginally.

Original languageEnglish (US)
Pages (from-to)109-116
Number of pages8
JournalAmerican Journal of Obstetrics and Gynecology
Issue number1
Publication statusPublished - Jan 1 2002



  • Cesarean section
  • Illness severity
  • Intraventricular hemorrhage
  • Neonatal intensive care
  • Thrombocytopenia

ASJC Scopus subject areas

  • Obstetrics and Gynecology

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