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- Vadir Baktash, Tom Hosack, Nishil Patel, Shital Shah, Pirabakaran Kandiah, Koenraad Van den Abbeele, MandalAmit K JAKJhttp://orcid.org/0000-0003-0986-5927Department of Medicine, Frimley Health NHS Foundation Trust, Wexham Park Hospital, Slough, UK., and Constantinos G Missouris.
- Department of Medicine, Frimley Health NHS Foundation Trust, Wexham Park Hospital, Slough, UK.
- Postgrad Med J. 2021 Jul 1; 97 (1149): 442-447.
PurposeOlder adults are more likely to be vitamin D deficient. The aim of the study was to determine whether these patients have worse outcomes with COVID-19.MethodsWe conducted a prospective cohort study between 1 March and 30 April 2020 to assess the importance of vitamin D deficiency in older patients with COVID-19. The cohort consisted of patients aged ≥65 years presenting with symptoms consistent with COVID-19 (n=105). All patients were tested for serum 25-hydroxyvitamin D (25(OH)D) levels during acute illness. Diagnosis of COVID-19 was confirmed via viral reverse transcriptase PCR swab or supporting radiological evidence. COVID-19-positive arm (n=70) was sub-divided into vitamin D-deficient (≤30 nmol/L) (n=39) and -replete groups (n=35). Subgroups were assessed for disease severity using biochemical, radiological and clinical markers. Primary outcome was in-hospital mortality. Secondary outcomes were laboratory features of cytokine storm, thoracic imaging changes and requirement of non-invasive ventilation (NIV).ResultsCOVID-19-positive arm demonstrated lower median serum 25(OH)D level of 27 nmol/L (IQR=20-47 nmol/L) compared with COVID-19-negative arm, with median level of 52 nmol/L (IQR=31.5-71.5 nmol/L) (p value=0.0008). Among patients with vitamin D deficiency, there was higher peak D-dimer level (1914.00 μgFEU/L vs 1268.00 μgFEU/L) (p=0.034) and higher incidence of NIV support and high dependency unit admission (30.77% vs 9.68%) (p=0.042). No increased mortality was observed between groups.ConclusionOlder adults with vitamin D deficiency and COVID-19 may demonstrate worse morbidity outcomes. Vitamin D status may be a useful prognosticator.© Author(s) (or their employer(s)) 2021. No commercial re-use. See rights and permissions. Published by BMJ.
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