Background
Well-controlled glucose (i.e. 70-180 mg/dl) has been associated with lower mortality from COVID-19. The addition of dexamethasone to COVID-19 treatment protocols has raised concerns about the potential negative consequences of dexamethasone-induced hyperglycemia.
Methods
We developed a protocol to guide the management of dexamethasone-induced hyperglycemia in hospitalized patients with COVID-19. Two of the four medical teams managing patients with COVID-19 at a tertiary center used the protocol and the other two teams continued to manage hyperglycemia at the discretion of the treating physicians (“
Protocol
” and “
Control
” groups, respectively). The glycemic control and clinical outcomes in 163 patients hospitalized with COVID-19 and dexamethasone-induced hyperglycemia between July 5th and September 30th, 2020 were retrospectively reviewed and compared between the two groups.
Results
Compared to the “
Control
” group, the “
Protocol
” group had higher proportions of patients with well-controlled glucose across all pre-meals and bedtime glucose readings throughout the hospitalization. The differences in glycemic control between the two groups were statistically significant for fasting glucose on days 4, 5, and discharge day; pre-lunch glucose on discharge day; pre-dinner glucose on days 3, 5, and discharge day; and bedtime glucose on day 1 (all
p<0.05
). After adjusting for age, sex, nationality, BMI, Charlson score, and diabetes status; patients in the “
Protocol
” group were more likely to have well-controlled glucose compared to those in the “
Control
” group. Moreover, the in-hospital mortality was significantly lower in the “
Protocol
” group compared to the “
Control
” group (12.93 and 29.93%, respectively,
p=0.01
)
Conclusions
The implementation of a protocol to manage dexamethasone-induced hyperglycemia in hospitalized patients with COVID-19 resulted in more patients achieving well-controlled glucose levels and was associated with lower mortality of COVID-19.