AUTHOR=Joye Raphael , Ceroni Dimitri , Beghetti Maurice , Aggoun Yacine , Sologashvili Tornike 

TITLE=Fulminant Infective Endocarditis Due to Kingella Kingae and Several Complications in a 6-Year-Old Girl: A Case Report

JOURNAL=Frontiers in Pediatrics

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2021.707760

DOI=10.3389/fped.2021.707760

ISSN=2296-2360

ABSTRACT=Abstract
Kingella kingae is a gram-negative coccobacillus that belongs in the HACEK group (Haemophilus species, Aggregatibacter actinomycetemcomitans, Cardiobacterium hominis, Eikenella corrodens and Kingella species) and is a common oropharyngeal colonizer in young healthy children. Osteoarticular infection are the most commonly reported Kingella kingae invasive infections in children and usually show a mild clinical picture. However, it is also related to severe invasive infections, especially infective endocarditis, with a high rate of complications.
We report the case of a 6-year-old girl, with no past medical history, that presented with a fulminant infective endocarditis due to Kingella kingae. She underwent emergency venoarterial extracorporeal membrane oxygenation support followed by cardiac surgery and was then treated by ceftriaxone for 4 weeks as recommanded by the American Heart Association. The postoperative course was marked by the occurrence of cerebral ischemic stroke consistent with septic embolism. The patient also presented a paraaortic pseudoaneurysm that required a surgical revision with good postoperative result. 
This case illustrates a fulminant presentation of a Kingella kingae infective endocarditis responsible for two major complications. We also report our experience with valvular preservative surgery, which allowed to preserve valvular function and growth capacity.