Editorial on the Research TopicCritical complications in pediatric oncology and hematopoietic cell transplant
History of pediatric onco-critical careThe evolving experience and expertise in caring for critically ill pediatric oncology, hematopoietic cell transplant (HCT), and cellular therapies (CT) patients is a very recent effort. This topic, however, carries behind it tremendous energy and enthusiasm as evidenced by the numerous quality submissions to this Research Topic, "Critical Complications in Pediatric Oncology and Hematopoietic Cell Transplantation".Pediatric HCT was first successfully performed by the Robert A. Good team in 1968 to treat a non-malignant disorder (X-linked severe combined immune deficiency) (1) followed by expanded indications to bone marrow malignancies and failure (2-4). In this era, pediatric critical care was also early in its infancy but was available to patients with sepsis/septic shock, hemorrhage, and respiratory insufficiency/failure. Pediatric renal replacement therapies were limited, tunneled central venous access was in development, and non-invasive positive pressure was still decades away. Initial hematopoietic growth factors, anti-viral agents, and infection prophylaxis were undergoing study in clinical trials.Mortality in this early era in both adult and pediatric oncology and HCT patients with septic shock and/or acute respiratory failure was dismal, with mortality rates exceeding 80% (5-9). Indeed, one published series from this early period stated: "Intensive respiratory care is effective for patients with readily reversible causes of respiratory failure, but is generally futile for patients with progressive interstitial pneumonia" and "We also recommend providing bone-marrow transplant patients with realistic prognostic estimates … before transfer to the intensive care unit … This approach may reduce the amount of futile care" (10).