Sepsis in children rarely announces itself. A fever, fast breathing, a child who seems “just off” — these signs can mimic a dozen ordinary illnesses. Then, suddenly, organs start failing. For nearly two decades, hospitals diagnosed pediatric sepsis using one set of criteria. New research shows those criteria missed too many cases. They also led to misdiagnoses in others.
Hospitals have used the International Pediatric Sepsis Consensus Conference (IPSCC) criteria to help diagnose sepsis in pediatric patients. No one ever rigorously validated it against real outcomes, and its accuracy varied widely between hospitals. One emergency department might call a case sepsis, while another might not.
Because of that gap, the Society of Critical Care Medicine (SCCM) convened a Pediatric Sepsis Definition Task Force — an international panel of pediatric critical care physicians — to build something the field never had: a database large enough to test sepsis criteria against real outcomes. The task force’s findings were published in JAMA. Researchers gathered more than 3.6 million pediatric hospital encounters from 10 health systems in five countries. The dataset spanned well-resourced U.S. hospitals as well as lower-resource sites in Kenya, Bangladesh, and Colombia.
New Pediatric Sepsis Criteria, Built on Data
From that data, the task force designed the Phoenix Sepsis Score. This tool measures dysfunction across four organ systems: respiratory, cardiovascular, coagulation, and neurologic. Under the new criteria, a child with suspected infection meets sepsis criteria at a score of 2 or higher. Add a cardiovascular point, and it becomes septic shock. In short, simple thresholds now replace a system built on subjective judgment calls.
Overall, the new criteria outperformed the IPSCC criteria. In fact, they caught more true sepsis cases while flagging fewer false positives, in both high- and low-resource hospitals. That combination matters clinically, because missed sepsis costs lives, and overdiagnosis means unnecessary antibiotics and treatments for kids who don’t need them.
