Clinical Characteristics and Outcomes of SLE Patients Admitted to Critical Care Unit

Systemic Lupus Erythematosus

The aim of the present work is to determine the frequency of critical complications of SLE patients admitted to the intensive care unit,study the risk factors and out comes.

Systemic lupus erythematosus (SLE) is a systemic heterogeneous autoimmune disease with a highly variable course and prognosis that many different organs may be affected . It has wide spectrum of clinical presentation that affects all ages and ethnicities . Child-bearing women most often afflicted by this diseases, but with different disease manifestations and with variable severity . The pathogenesis of SLE is complex and still largely unknown. Genetic, environmental, and hormonal factors contribute to disease susceptibility . The diagnosis of SLE is based on characteristic clinical findings of the skin, joints, kidneys, and the central nervous system, as well as on serological parameters such as antinuclear antibodies (ANA) . SLE mainly causes damage to the kidney, heart, joints, blood vessels, liver, lungs and the nervous system . Since SLE is a heterogeneous disease, its complications may vary and the severity or intensity depends on the area affected. Pulmonary hypertension, alveolar haemorrhage, thrombocytopenia, catastrophic antiphospholipid syndrome (APS), haemolytic anemia, neutropenia, blood cancer and thrombotic thrombocytopenic purpura, atherosclerosis, pericardial tamponade myocarditis, heart failure, arthritis, vasculitis, adrenal insufficiency, lupus nephritis (LN), neuropsychiatric disorders, pancreatitis, and myelitis are some of the major complications of SLE . In a previous study on Egyptian SLE patients, pleuro-pulmonary system was found to be one of the most commonly affected systems; pleurisy being the most frequent clinical finding followed by pulmonary infection and disease activity was an important predictor for infection . Lupus flares and infections are the most common causes of admission to the ICU in patients with SLE. Pertaining to complications from infections, lower pulmonary tract infections are typically more severe and frequent. A number of studies have addressed the characteristics and outcomes of critically ill SLE patients. In a cohort of 2870 SLE patients retrieved from a national database, the leading causes of ICU admission were found to be infections and organ dysfunction (neurological, cardiovascular, and respiratory systems). Ethnic differences, availability of therapy, and health-care referral systems may impact SLE manifestation and prognosis. Few studies have provided a clinical characterization of SLE patients admitted to the ICU, and data on predictors of patient outcomes are discordant.

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