• Mohsen S Elalfy, Iman A Ragab, NourEldin M AbdelAal, Sara Mahfouz, and Ahmed R Rezk.
• Department of Pediatrics, Department of Hematology-Oncology, Neonatal Intensive Care Unit and Pediatric Intensive Care Unit, Ain Shams University, Cairo, Egypt.
• Pediatr Hematol Oncol. 2021 Aug 1; 38 (5): 486-496.

AbstractSeptic shock is a major public health concern. However, the clinical and laboratory criteria for sepsis overlap with those for hemophagocytic lymphohistiocytosis (HLH), and their differentiation can be challenging. The aim of this study was to compare HLH criteria among patients diagnosed with neonatal sepsis and childhood sepsis and to study the outcomes in patients fulfilling the diagnostic criteria for HLH. A cross-sectional study included 50 neonates and children with severe sepsis and/or septic shock. Clinical and laboratory data and HLH diagnostic criteria were studied in relation to patients outcome. Of all patients, 18% fulfilled three of the eight HLH diagnostic criteria, 2% fulfilled four criteria, and 4% fulfilled five criteria. All patients who fulfilled three or more of the criteria died. Mortality was higher in the presence of more positive HLH criteria and in pediatric age groups. However, the distributions of the HLH criteria were comparable for pediatric and neonatal patients with severe sepsis/septic shock, and their mortality rates were not significantly different when based on the criteria.

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