Bleeding in Critically Ill Children With Underlying Oncologic Diagnoses

Inclusion Criteria: * All children (≥28 days old through 18 years of age) with an oncologic diagnosis admitted to the PICU at Memorial Sloan Kettering Cancer Center * An oncologic diagnosis will include those with a cancer diagnosis or those being treated at MSK for blood disorders, immunodeficiencies and complications of transplant. Exclusion Criteria: * Preterm infants (\<44 weeks gestation at age of enrollment) as in these patients most bleeding etiologies are specific to the neonatal period and the bleeding assessment tool is not calibrated for this population * Known limitation of care at enrollment (standing Do Not Resuscitate order), as the interventions and clinical outcome would be biased * Pre-existing bleeding disorders