Hemodynamic Risk Factors for Cerebellar Hemorrhage Presence and Volume in Infants Born Very Preterm.

Abstract

To examine among infants born very preterm the role of hemodynamic disturbances in the occurrence of cerebellar hemorrhage (CbH) and whether cardiovascular instability is associated with larger CbH volume. Prospective, longitudinal, multisite cohort study. Early-life and/or term-equivalent age brain magnetic resonance imaging were performed in 309 very preterm infants admitted to 3 tertiary-level neonatal intensive care units. A cut-off of 4 mm was used to distinguish punctate vs large CbH. CbH volumes were obtained by manual segmentation. As a measure of hemodynamic stability, Score for Neonatal Acute Physiology, patent ductus arteriosus requiring treatment, and hypotension treated with inotropes were recorded. Sixty patients (18.3%) were diagnosed with CbH, classified as punctate in 43 infants (71.3%). Hypotension requiring treatment with inotropes was an independent risk factor for CbH (OR 3.07, 95% CI 1.15-8.21, P = .02) and was associated with larger CbH volume (0.36 log mm³, 95% CI 0.17-0.54, P < .001). Hypotension treated with inotropes is shown to be an independent risk factor for the presence of CbH as well as for larger CbH volume. These results reinforce the importance of hemodynamics stability, especially an appropriate management of hypotension to prevent CbH and therefore improve neurodevelopmental outcomes among infants born very preterm.