Hyperglycemia at hospital admission is associated with severity of the prognosis in patients hospitalized for COVID-19: The pisa COVID-19 study

Abstract

OBJECTIVE To explore whether at-admission hyperglycemia is associated with worse outcomes in patients hospitalized for coronavirus disease 2019 (COVID-19). RESEARCH DESIGN AND METHODS Hospitalized COVID-19 patients (N 5 271) were subdivided based on at-admission glycemic status: 1) glucose levels <7.78 mmol/L (NG) (N 5 149 [55.0%]; median glucose5.99mmol/L[range5.38–6.72]),2)known diabetesmellitus (DM)(N5 56[20.7%]; 9.18 mmol/L [7.67–12.71]), and 3) no diabetes and glucose levels ≥7.78 mmol/L (HG) (N 5 66 [24.3%]; 8.57 mmol/L [8.18–10.47]). RESULTS Neutrophils were higher and lymphocytes and PaO2/FiO2 lower in HG than in DM and NG patients.DMandHG patients hadhigherD-dimer andworseinflammatoryprofile. Mortality was greater in HG (39.4% vs. 16.8%; unadjusted hazard ratio [HR] 2.20, 95% CI1.27–3.81,P50.005)thaninNG(16.8%)andmarginallysoinDM(28.6%;1.73,0.92– 3.25, P 5 0.086) patients. Upon multiple adjustments, only HG remained an independent predictor (HR 1.80, 95% CI 1.03–3.15, P 5 0.04). After stratification by quintile of glucose levels, mortality was higher in quintile 4 (Q4) (3.57, 1.46–8.76, P 5 0.005) and marginally in Q5 (29.6%) (2.32, 0.91–5.96, P 5 0.079) vs. Q1. CONCLUSIONS Hyperglycemia is an independent factor associated with severe prognosis in people hospitalized for COVID-19.