Relative importance of inflammatory markers in deciding infection versus inflammation

Background: Fever is the commonest presentation of pediatric patients attending emergency departments of all children’s hospital. The cause of fever may be acute bacterial infections or primary vasculitic disorders like Kawasaki disease or inflammation due to non-bacterial infections. The objective was to compare the performance of the four biomarkers ESR, CRP, Procalcitonin and IL-6 in predicting a diagnosis of sepsis/infection and find out a definite cut off value for the statistically most significant one.Methods: The authors conducted this prospective observational study at the indoors of a pediatric tertiary care referral center in India to find out a biomarker which can differentiate between infection and inflammation (vasculitis) in children admitted with fever and finally diagnosed as infection or inflammation (vasculitis).Results: Among ESR, CRP, Procalcitonin and Interleukin-6, only IL-6 showed statistical significance in differentiating infection from inflammation (vasculitis) analysed using the Receiver Operating Characteristic (ROC) curve and Mann-Whitney U test, sensitivity and specificity.Conclusions: IL-6 level 27 pg/mL or less at the time of admission indicates an infectious etiology while level more than this indicates towards a vasculitic cause.

Splenic abscess as a complication of enteric fever.

A rare and unrecognized complication of enteric fever is splenic abscess. We report two cases of childhood enteric fever complicated by splenic abscess (one solitary and the other multiple).

Difficulties in the diagnosis of Kawasaki disease.

This study aims to highlight the difficulties faced in the clinical diagnosis of Kawasaki Disease (KD) presenting beyond the first week. This is a retrospective study of 25 cases of which only 36% met the criteria for classical and 8% was incomplete KD. Majority (56%) did not meet the criteria for classical KD; at the same time they were not incomplete / atypical cases. Difficulties arise in diagnosis of the cases presenting in the second week, as by that time many of the classical findings disappear or probably have not been present at all. In this scenario high index of suspicion for KD in a child presenting with fever, looking not that sick (Non toxic look) with bulbar conjunctivitis and oral mucositis helped us to reach the diagnosis. We incidentally observed Hyperemia of the Upper Eyelids in 32% of our cases, which might assist in the diagnosis.