Hypocalcemia is associated with adverse outcomes in patients hospitalized with COVID-19
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Published:2022-11-09
Issue:3
Volume:79
Page:577-586
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ISSN:1559-0100
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Container-title:Endocrine
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language:en
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Short-container-title:Endocrine
Author:
Minasi Alessandro, Andreadi Aikaterini, Maiorino Alessio, Giudice Luca, De Taddeo Sofia, D’Ippolito Ilenia, de Guido Ilaria, Laitano Rossella, Romano Maria, Ruotolo Valeria, Magrini Andrea, Di Daniele Nicola, Rogliani Paola, Bellia Alfonso, Lauro DavideORCID
Abstract
Abstract
Purpose
Calcium ions are involved in the regulation of several cellular processes and may also influence viral replication. Hypocalcemia has been frequently reported during infectious diseases and in critically ill patients, including also COVID-19 patients, significantly related with the pro-inflammatory state and mortality. The aim of this study is to investigate the prevalence of hypocalcemia at admission in patients hospitalized for COVID-19 (Coronavirus disease 2019) and to evaluate association of hypocalcemia with in-hospital COVID-19 outcomes.
Methods
Retrospective analysis on 118 consecutive patients, hospitalized for COVID-19 between March and May 2020. Clinical characteristics, inflammation markers, biochemical routine and mineral metabolism parameters at admission were collected. Hypocalcemia was defined as total serum calcium <2.2 mmol/L. Population was stratified by tertiles of total serum calcium. Primary outcome was the composite of in-hospital death or admission to intensive care unit (ICU). Secondary outcomes included in-hospital death, admission to ICU and need for non-invasive ventilation as separate events. Associations were tested by logistic regression and Cox-regression analysis with survival curves.
Results
Overall prevalence of hypocalcemia was 76.6%, with just 6.7% of patients reporting levels of 25-(OH)-vitamin D > 30 ng/ml. Total serum calcium was inversely related with selected inflammatory biomarkers (p < 0.05) and poorer outcome of COVID-19 during hospitalization. Lower tertile of total calcium (≤2.02 mmol/L) had increased risk of in-hospital mortality (HR 2.77; 1.28–6.03, p = 0.01) compared with other groups.
Conclusion
Total serum calcium detected on admission is inversely related with proinflammatory biomarkers of severe COVID-19 and is useful to better define risk stratification for adverse in-hospital outcome.
Publisher
Springer Science and Business Media LLC
Subject
Endocrinology,Endocrinology, Diabetes and Metabolism
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