Evaluation of Patients Hospitalized from the Emergency Department with Pyelonephritis

IntroductonAcute pyelonephritis (APN) is a progressive infection of the parenchymal tissue of the kidney that can result in high mortality and morbidity [1][2][3][4][5].The main symptoms are flank pain, fever, low back pain, and burning sensations during urination.It is more common in women than men, and it can be observed at any age [3][4][5][6][7].Gram (-) enteric bacteria are frequently seen as causative agents.Pyelonephritis can be divided into two categories: complicated pyelonephritis associated with complicating factors, such as urinary system anomalies, urinary system stones, diabetes, pregnancy, catheter use, and similar foreign bodies, and uncomplicated pyelonephritis, which is a disease without complicating factors.The determination of these factors is important for diagnosis and treatment.Treatment should be started as soon as possible in such patients.In untreated patients, it may progress to the loss of renal parenchyma, followed by sepsis and death [1,[7][8][9].The diagnosis of APN is made using the rational use of clinical findings, laboratory tests, and imaging methods [5,10].In this study, we aimed to evaluate the demographic, etiologic, and clinical characteristics, complicating factors, laboratory and radiodiagnostic evaluations, treatment practices, and follow-up processes of hospitalized patients with APN.