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Mortality in patients with systemic lupus erythematosus in Colombia: a case series
David Aguirre-Valencia1,2, Ana Suárez-Avellaneda2, Vanessa Ocampo-Piraquive2
1GIRAT: Grupo de Investigación en Reumatología, Autoinmunidad y Medicina Traslacional, Fundación Valle del Lili and Universidad Icesi, Cali, Colombia.
Insights
Systemic lupus erythematosus (SLE) deaths were mainly due to active disease and lupus nephritis. Patients often had severe complications like antiphospholipid syndrome, requiring intensive treatment and hospitalization.
Area of Science:
- Rheumatology
- Internal Medicine
- Autoimmune Diseases
Background:
- Systemic lupus erythematosus (SLE) is a chronic autoimmune condition with significant mortality.
- Understanding mortality patterns is crucial for improving patient outcomes.
Purpose of the Study:
- To identify and describe the primary causes of death in SLE patients.
- To analyze factors associated with mortality in a Colombian SLE cohort.
Main Methods:
- Retrospective review of SLE patient records from January 2011 to June 2017.
- Extraction and analysis of causes of death and associated clinical variables.
Main Results:
- 49 deaths in 1776 SLE patients; predominantly women (89.8%).
- Leading causes of death: SLE activity (44.9%), lupus nephritis (LN) types IV and VI (77.6%), and antiphospholipid syndrome (16.3%).
- Patients exhibited high SLE disease activity index (SLEDAI-2K) scores and persistent hypocomplementemia.
Conclusions:
- Refractory SLE activity and nosocomial infections were key mortality drivers.
- High SLEDAI, severe LN, antiphospholipid syndrome, and hypocomplementemia predicted mortality.
- These factors necessitated aggressive immunosuppression and prolonged hospital stays.
Introduction:
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease associated with high mortality rates. This study aimed to describe the main causes of death in a case series of SLE patients attended in a single center in Colombia.
Methods:
We conducted a retrospective review and analysis of records of SLE patients who died between January 2011 and June 2017. We extracted the main causes of death and described variables associated with this outcome as well as variables associated with the disease and its treatment.
Results:
From a total of 1776 patients with SLE, we identified 49 fatal cases (89.8% women, n = 44). The average age at death was 40.6 years (SD 17.4), and patients had a median of 4.5 years (IQR 2-8) of disease duration. The main findings included lymphopenia in 44 patients (89.9%), biopsy-confirmed lupus nephritis (LN)-types IV and VI-in 38 (77.6%), catastrophic antiphospholipid syndrome (CAPS) in 8 (16.3%), and persistent hypocomplementemia (C3 and C4) in 8 (16.3%). The median SLE disease activity index (SLEDAI-2K) score at the time of death was 19 (IQR 11-39). The main cause of death was SLE activity and lupus-induced damage in 22 (44.9%) patients.
Conclusion:
The main causes of death included SLE activity refractory to immunosuppressive treatment, and nosocomial bacterial infections. The patients who died had persistently high SLEDAI scores, types IV and VI LN, associated antiphospholipid syndrome, and persistent hypocomplementemia, requiring severe immunosuppression and prolonged hospitalization.
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