Association of Country Income Level With the Characteristics and Outcomes of Critically Ill Patients Hospitalized With Acute Kidney Injury and COVID-19

Kidney damage associated with COVID-19: from the acute to the chronic phase

Severe acute respiratory syndrome coronavirus-2 (SARS-COV-2) infection is well established as a systemic disease including kidney damage. The entry point into the renal cell remains the angiotensin-converting enzyme 2 (ACE-2) receptor and the spectrum of renal lesions is broad, with a clear predominance of structural and functional tubular lesions. The most common form of glomerular injury is collapsing glomerulopathy (CG), which is strongly associated with apolipoprotein L1(APOL-1) risk variants. These acute lesions, which are secondary to the direct or indirect effects of SARS-CoV-2, can progress to chronicity and are specific to long COVID-19 in the absence of any other cause. Residual inflammation associated with SARS-CoV-2 infection, in addition to acute kidney injury (AKI) as a transitional state with or without severe histological lesions, may be responsible for greater kidney function decline in mild-to-moderate COVID-19. This review discusses the evidence for renal histological markers of chronicity in COVID-19 patients and triggers of low-grade inflammation that may explain the decline in kidney function in the post-COVID-19 period.

Patient-centered approach to the management of acute kidney injury in the Covid-19 outcomes

OBJECTIVE

Aim: To identify patients at risk of AKI with severe COVID-19 and to guide management strategies according to national and global scientific data for improving kidney-related outcomes.

PATIENTS AND METHODS

Materials and Methods: We conducted retrospective study case-control analysing cases of hospitalisation patients with COVID-19 with or without AKI during hospital stay.

RESULTS

Results: In the study, we found that there was a positive correlation between AKI and respiratory insufficiency (0,513 - moderate, p<0,0001), moderate in the case of AKI grade 2 (0.301, <0,001) and mild in the case of AKI grade 1 and 3 correspondingly (0.252, p<0,01; 0.277, <0,001). Lethality (in-hospital death rate) correlated with respiratory insufficiency and AKI (0.733, 0,617; p<0,0001). We found that age had a reverse correlation with AKI and RI (younger patients were more likely to have a higher prevalence of AKI and RI, p<0,001). It was noticed that AKI correlated with the minimal albumin level (-0,35, p=0,016), minimal lymphocyte count (-0.377, p<0,0001), IL-6 (0.201, p=0,035), ferritin (0.34, p <0,0001), maximal CRP (0.439, p<0,0001). There was a mild correlation between Padua Score and AKI (0,232, p<0,01) and PLRI (0,172, p=0,05).

CONCLUSION

Conclusions: Early assessment of renal dysfunction could be used as a marker of severe outcomes of COVID-19, especially in the case of comorbidities such as metabolic disorders and cardiovascular events. We suggest using the Padua score, assessment of personal lethality risk index (PLRI), and rise of serum creatinine as additional tools for assessment criteria for hospitalisation.

Health Systems Preparedness for Infectious Disease Outbreaks: Relevance for Nephrology

The coronavirus disease (COVID-19) crisis glaringly highlighted the critical need to develop resilient health care systems that are better prepared for epidemics. Millions of people died from COVID-19 itself, but almost three times as many died from health system disruptions. People living with kidney disease are highly vulnerable during outbreaks and pandemics and their needs must be included in preparedness planning. Health systems preparedness requires not only early identification and containment of outbreaks and maintenance of critical services during crises, but also bolstering population resilience and ensuring the safety of both health personnel and patients. Planning for surge capacity in an outbreak must include provision for both acute and chronic dialysis, and ensure access to medications for people with kidney diseases. Quality of care should not be compromised and must be monitored and improved where necessary. Technology, such as telemedicine, can support quality and continuity of care and minimize infection risks. Communication at all levels is crucial to ensure all stakeholders, including communities, have the necessary information to support cooperation and collaboration in effective outbreak responses. Research is important during and after pandemics to improve knowledge and build resilience at all levels, from outbreak detection to the development of therapeutics and optimizing equity in access to interventions. Only with adequate preparation and more resilient health systems can we hope, as a global community, to build on the harsh lessons learned during COVID-19, and improve the response to the next infectious disease outbreak, epidemic, or even pandemic.

Infections and Acute Kidney Injury: A Global Perspective

Globally, there are an estimated 13.3 million cases of acute kidney injury (AKI) annually. Although infections are a common cause of AKI globally, most infection-associated AKI occurs in low- and lower-middle-income countries. There are marked differences in the etiology of infection-associated AKI across age groups, populations at risk, and geographic location. This article provides a global overview of different infections that are associated commonly with AKI, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), human immunodeficiency virus, malaria, dengue, leptospirosis, tick-borne illnesses, and viral hemorrhagic fevers. Further discussion focuses on infectious conditions associated with AKI including sepsis, diarrheal diseases and pregnancy, peripartum and neonatal AKI. This article also discusses the future of infection-associated AKI in the framework of climate change. It explores how increased investment in achieving the sustainable development goals may contribute to the International Society of Nephrology's 0 by 25 objective to curtail avoidable AKI-related fatalities by 2025.