Settembre Ottobre 2021

AKI in hospitalized patients with COVID-19: a single-center experience

Dear Editor,

since December 2019, the COVID-19 pandemic is straining hospitals and nephrology services worldwide. Although this disease manifests mostly with pneumonia, acute kidney injury (AKI) is recognized as a common complication in patients with severe manifestations of COVID-19. The pathogenesis of COVID-19 is still unclear but recent evidence supports a multifactorial etiology [1]. Generally, kidney involvement following SARS-CoV-2 infection is proportionate to the gravity of the infection and is commonly diagnosed in hospitalized patients with lung involvement [2]. As in another clinical scenarios, kidney injury is independently associated with morbidity and mortality in patients with SARS-CoV-2 infection [3,4].

The distribution of AKI in patients with COVID-19 is extremely variable across countries [5]. The first reports from China described a low prevalence of AKI in hospitalized patients [6] but subsequent evidence, coming from the USA and Europe, suggested a higher kidney involvement, especially in the intensive care setting [7] and among vulnerable patients [8]. Few studies have estimated the rate of AKI in hospitalized patients admitted to non-intensive care units in Italy. It ranges between 13.7-22.6% [911] and is similar to the prevalence detected in other European countries (4.5-22%) [1214]. In order to broaden the knowledge of this phenomenon, we report the data on the prevalence and clinical characteristics of AKI in COVID-19 patients.


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