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Updated: Nov 19, 2025

A High-Throughput Multiplexed Screening for Type 1 Diabetes, Celiac Diseases, and COVID-19
Published on: July 5, 2022
Clinical Findings in Diabetes Mellitus Patients with COVID-19
Ting Guo1,2,3, Qinxue Shen1,2,3, Xiaoli Ouyang1,2,3
1Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central-South University, Changsha, Hunan 410011, China.
Insights
Diabetes mellitus (DM) patients with COVID-19 face higher risks of severe illness, particularly women. Elevated HbA1c and proteinuria indicate potential risk factors for severe coronavirus disease in these individuals.
Area of Science:
- Infectious Diseases
- Endocrinology
- Critical Care Medicine
Background:
- Diabetes mellitus (DM) is a frequent comorbidity in patients diagnosed with coronavirus disease (COVID-19).
- Understanding the clinical characteristics of DM patients with COVID-19 is crucial for managing severe disease outcomes.
Purpose of the Study:
- To summarize the clinical features of patients with DM and COVID-19.
- To identify potential factors associated with severe COVID-19 disease in diabetic patients.
Main Methods:
- A retrospective, single-center study reviewed medical records of COVID-19 patients in Changsha, China.
- Compared epidemiological information, clinical features, and outcomes between DM and non-DM patients, focusing on ICU admission.
Main Results:
- Out of 241 COVID-19 patients, 19 had DM. DM patients showed higher ICU admission rates (36.8% vs. 15.8%).
- Female DM patients in the ICU were more prevalent (85.7% vs. 31.4%). Higher HbA1c (8.5% vs. 7.1%) and proteinuria (57.1% vs. 33.3%) were observed in ICU DM patients.
- Most DM patients (63.2%) required changes in diabetic therapy; all ICU DM patients received insulin. All 19 DM patients were discharged without mortality.
Conclusions:
- DM patients with COVID-19 are susceptible to severe disease, with female patients being particularly vulnerable.
- Elevated HbA1c and proteinuria may serve as indicators for severe COVID-19 in DM patients.
- Effective blood glucose control and appropriate diabetic management are vital for improving prognosis in severe cases.
Backgrounds:
Diabetes mellitus (DM) is one of the most common comorbidities in patients with coronavirus disease (COVID-19). We aim to summarize the clinical features of DM patients with COVID-19 and find out potential factors associated with severe disease.
Methods:
In this retrospective, single-center study, the medical records of patients with COVID-19 in Changsha, Hunan, China, from January 21, 2020, to February 19, 2020, were reviewed. Epidemiological information, clinical features, and outcomes were compared between DM patients admitted to the intensive care unit (ICU) or not.
Results:
A total of 241 patients confirmed with COVID-19 were enrolled, including 19 DM patients. There were more patients in DM group admitted to the ICU than non-DM group (36.8% vs. 15.8%, P = 0.045). Compared with non-DM group in the ICU, there were more female patients from DM group in the ICU (85.7% vs. 31.4%, P = 0.024). On admission, the mean level of glycated hemoglobin A1c (HbA1c) was higher in the ICU DM patients than that in the non-ICU DM patients (8.5% vs. 7.1%). There were more DM patients with proteinuria in the ICU group than the non-ICU group (57.1% vs. 33.3%). Twelve DM patients (63.2%) changed diabetic therapy during hospitalization, and all DM patients admitted to the ICU used insulin. As of March 14, all 19 DM patients have been discharged, and no death occurred.
Conclusions:
DM patients with COVID-19 are vulnerable to severe disease, especially for female patients. High levels of HbA1c and proteinuria could be potential risk factors for severe COVID-19 in DM patients. In addition to timely systemic therapy, the control of blood glucose and proper diabetic therapy is essential to improve the prognosis of severe DM patients with COVID-19.
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