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dc.contributor.authorEden, Timothy
dc.contributor.authorMcAuliffe, Shane
dc.contributor.authorCrocombe, Dominic
dc.contributor.authorNeville, Jonathan
dc.contributor.authorRay, Sumantra
dc.date.accessioned2022-02-14T02:02:02Z
dc.date.available2022-02-14T02:02:02Z
dc.date.issued2021
dc.identifier.citationBMJ nutrition, prevention & health, volume 4, issue 2, page 416-424
dc.identifier.issn2516-5542
dc.identifier.otherPMC8350973
dc.identifier.other35024546
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/333980
dc.description.abstractUNLABELLED: COVID-19 is an inflammatory syndrome caused by novel coronavirus SARS-CoV-2. Symptoms range from mild infection to severe acute respiratory distress syndrome (ARDS) requiring ventilation and intensive care. At the time of data collection, UK cases were around 300 000 with a fatality rate of 13% necessitating over 10 000 critical care admissions; now there have been over 4 million cases. Nutrition is important to immune function and influences metabolic risk factors such as obesity and glycaemic control, as well as recovery from acute illnesses. Poor nutritional status is associated with worse outcomes in ARDS and viral infections, yet limited research has assessed pre-morbid nutritional status and outcomes in patients critically unwell with COVID-19. OBJECTIVES: Investigate the effect of body mass index (BMI), glycaemic control and vitamin D status on outcomes in adult patients with COVID-19 admitted to an intensive care unit (ICU). METHODS: Retrospective review of all patients admitted to a central London ICU between March and May 2020 with confirmed COVID-19. Electronic patient records data were analysed for patient demographics; comorbidities; admission BMI; and serum vitamin D, zinc, selenium and haemoglobin A1c (HbA1c) concentrations. Serum vitamin D and HbA1c were measured on admission, or within 1 month of admission to ICU. Primary outcome of interest was mortality. Secondary outcomes included time intubated, ICU stay duration and ICU-related morbidity. RESULTS: Seventy-two patients; 54 (75%) men, mean age 57.1 (±9.8) years, were included. Overall, mortality was 24 (33%). No significant association with mortality was observed across BMI categories. In the survival arm admission, HbA1c (mmol/mol) was lower, 50.2 vs 60.8, but this was not statistically significant. Vitamin D status did not significantly associate with mortality (p=0.131). However, 32% of patients with low vitamin D (<25 IU/L) died, compared with 13% of patients with vitamin D levels >26 IU/L. Serum zinc and selenium, and vitamin B12 and folate levels were measured in 46% and 26% of patients, respectively. DISCUSSION/CONCLUSION: Increased adiposity and deranged glucose homeostasis may potentially increase risk of COVID-19 infection and severity, possibly relating to impaired lung and metabolic function, increased proinflammatory and prothrombotic mechanisms. Vitamin D deficiency may also associate with poorer outcomes and mortality, supporting a possible role of vitamin D in immune function specific to pulmonary inflammation and COVID-19 pathophysiology. There are plausible associations between raised BMI, glycaemic control, vitamin D status and poor prognosis, as seen in wider studies; however, in this service evaluation audit during the first wave of the pandemic in the UK, with a limited data set available for this analysis, the associations did not reach statistical significance. Further research is needed into specific nutritional markers influencing critical care admissions with COVID-19.
dc.languageeng
dc.publisherBMJ
dc.rightsAttribution-NonCommercial 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.sourcenlmid: 101769223
dc.sourceessn: 2516-5542
dc.subjectNutrition assessment
dc.subjectCovid-19
dc.titleNutritional parameters and outcomes in patients admitted to intensive care with COVID-19: a retrospective single-centre service evaluation.
dc.typeArticle
dc.date.updated2022-02-14T02:02:01Z
prism.publicationNameBMJ Nutr Prev Health
dc.identifier.doi10.17863/CAM.81397
dcterms.dateAccepted2021-07-12
rioxxterms.versionofrecord10.1136/bmjnph-2021-000270
rioxxterms.versionVoR
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.contributor.orcidMcAuliffe, Shane [0000-0002-7166-4299]
dc.identifier.eissn2516-5542
cam.issuedOnline2021-08-06


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Except where otherwise noted, this item's licence is described as Attribution-NonCommercial 4.0 International