Kidney injury is a common pathology in the group of patients with systemic sclerosis. At least half of the patients show histological signs of it. Acute condition is known as scleroderma renal crisis. Although discussions regarding the risk factors for scleroderma renal crisis are open, most researchers consider the following factors: female sex, previous proteinuria and hypertension, the presence of anti-RNA polymerase III antibodies, and a decrease in lung diffusion capacity ≤75%. Diagnostic criteria for scleroderma renal crisis include an acute increase in blood pressure, accompanied by acute renal failure and abnormalities in the urinary sediment, anemia, and thrombocytopenia. Treatment of scleroderma renal crisis entails decreasing blood pressure, mainly with short-acting angiotensin-converting enzyme inhibitors, followed by selecting effective antihypertensive therapy. Further research of new treatment approaches is being carried on: the use of endothelin receptor antagonists (bosentan), monoclonal antibodies against the complement component 5 (eculizumab). Despite the approved strategies for identifying risk factors for scleroderma renal crisis development and treatment approaches, this group of patients is still characterized by high rates of mortality, the need for renal replacement therapy, and kidney transplantation. Thus, the problem of kidney injury in systemic sclerosis remains relevant.
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