Clinical course of COVID-19 infection in inflammatory rheumatological patients: a monocentric Belgian experience

COVID-19 Mortality in Patients with Rheumatic Diseases: A Real Concern

BACKGROUND

Coronavirus disease 2019 (COVID 19) is a worldwide pandemic that has devastated the world in a way that has not been witnessed since the Spanish Flu in 1918. In this study, we aim to investigate the outcomes of patients with rheumatic diseases infected with COVID-19 in Oman.

METHODS

A multi-center retrospective cohort study included patients with underlying rheumatological conditions and COVID-19 infection. Data were collected through the electronic record system and by interviewing the patients through a standard questionnaire.

RESULTS

113 patients with different rheumatic diseases were included with the following rheumatological diagnoses: rheumatoid arthritis (40.7%), systemic lupus erythematosus (23.1%), psoriatic arthritis (8%), Behcet's disease (7%), ankylosing spondylitis (6.2%), other vasculitides, including Kawasaki disease (4.4%), and other diagnoses (10.6%). The mean (SD) age of patients was 43 (14) years, and 82.3% were female. The diagnosis of COVID-19 was confirmed by PCR test in 84.1% of the patients. The most common symptoms at the time of presentation were fever (86%), cough (81%), headache (65%), and myalgia (60%). Hospitalization due to COVID-19 infection was reported in 24.1% of the patients, and 52.2% of these patients had received some form of treatment. In this cohort, the intake of immunosuppressive and immunomodulating medications was reported in 91.1% of the patients. During the COVID-19 infection, 68% of the patients continued taking their medications. Comorbidities were present in 39.8% of the patients. Pregnancy was reported in 2% of the patients. The 30 days mortality rate was found to be 3.5%. Diabetes, obesity, and interstitial lung diseases (ILD) were the strongest risk factor for mortality (p-value 0.000, 0.000, and 0.001, respectively). Rituximab was given in 3.8% of the patients, and it was significantly associated with increased mortality among the patients (p-value <0.001).

CONCLUSION

COVID-19 infection in patients with rheumatic diseases have an increased mortality rate in comparison to the general population, with diabetes, morbid obesity, chronic kidney diseases, interstitial lung disease, cardiovascular disease, obstructive lung disease, and liver diseases as comorbidities being the most severe risk factors associated with death. Greater care should be provided to this population, including the prompt need for vaccination.

Comorbidities in rheumatic diseases need special consideration during the COVID-19 pandemic

Comorbidities in rheumatic and musculoskeletal diseases (RMDs) not only increase morbidity and mortality but also confound disease activity, limit drug usage and increase chances of severe infections or drug-associated adverse effects. Most RMDs lead to accelerated atherosclerosis and variable manifestations of the metabolic syndrome. Literature on COVID-19 in patients with RMDs, and the effects of various comorbidities on COVID-19 was reviewed. The initial data of COVID-19 infections in RMDs have not shown an increased risk for severe disease or the use of different immunosuppression. However, there are some emerging data that patients with RMDs and comorbidities may fare worse. Various meta-analyses have reiterated that pre-existing hypertension, cardiovascular disease, stroke, diabetes, chronic kidney disease, heart failure, lung disease or obesity predispose to increased COVID-19 mortality. All these comorbidities are commonly encountered in the various RMDs. Presence of comorbidities in RMDs pose a greater risk than the RMDs themselves. A risk score based on comorbidities in RMDs should be developed to predict severe COVID-19 and death. Additionally, there should be active management of such comorbidities to mitigate these risks. The pandemic must draw our attention towards, and not away from, comorbidities.