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In patients undergoing multiple valve replacement and prolonged cardiopulmonary bypass, administration of nitric oxide decreased the incidence of acute kidney injury, transition to stage 3 chronic kidney disease, and major adverse kidney events at 30 days, 90 days, and 1 year. Clinical trial registered with ClinicalTrials.gov (NCT01802619).

T he 2019 novel coronavirus (COVID-19) pneumonia, reported in Wuhan (Hubei Province, China) since late 2019, has garnered intense attention worldwide [1]. The World Health Organization has declared this outbreak as a pandemic. While COVID-19 is usually common in middleaged or elderly people, the incidence of COVID-19 is rare in children, and children have mild clinical symptoms [2]. Chest computed tomography (CT) can identify infected lesions, indicating viral pneumonia, which plays an irreplaceable role in the screening of COVID-19. There are only limited data available regarding the typical chest CT imaging findings of COVID-19 in children [2]. In this study, we retrospectively evaluated radiographic features of chest CT and clinical features in children with confirmed COVID-19. METHODS This study was approved by the Medical Research EthicsCommittee of our institution. The requirement for patients' informed consent was waived due to the retrospective nature of the study. From January 16, 2020 to March14, 2020, a search of the electronic system and Picture archiving and communication system (PACS) was