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Using routine HbA1c measurements in stroke and the associations of dysglycaemia with stroke outcomes
Jeremy Lew1, Vincent Thijs2, Leonid Churilov3
1Department of Endocrinology, Austin Health, Heidelberg, Vic., Australia; Department of Medicine, Austin Health, The University of Melbourne, Australia.
Insights
Diabetes and pre-diabetes significantly increase stroke risk and mortality. This study found that having diabetes or elevated HbA1c levels in stroke patients correlated with higher mortality and longer hospital stays, highlighting the need for better glycemic control.
Area of Science:
- Neurology
- Endocrinology
- Public Health
Background:
- Diabetes mellitus is a significant risk factor for cerebrovascular events, including stroke.
- Understanding the prevalence of diabetes and pre-diabetes in stroke populations is crucial for risk stratification and management.
Purpose of the Study:
- To determine the prevalence of diabetes and pre-diabetes in a cohort of stroke patients.
- To investigate the association between glycemic status (diabetes, pre-diabetes, HbA1c levels) and outcomes such as mortality and morbidity.
Main Methods:
- A cohort of 610 inpatients aged 54 years and older diagnosed with stroke were analyzed.
- HbA1c levels were routinely measured. Data on length of stay, mortality (in-hospital and 6-month), readmission rates, and functional outcomes (modified Rankin scale) were collected.
- Multivariable regression analyses were employed to assess associations.
Main Results:
- 71% of the stroke cohort had either diabetes (31%) or pre-diabetes (40%).
- The presence of diabetes was linked to increased odds of 6-month mortality (OR=1.90) and longer expected length of stay (IRR=1.29).
- Elevated HbA1c levels also correlated with higher 6-month mortality (OR=1.27) and extended hospital stays (IRR=1.08).
Conclusions:
- A high proportion of stroke patients in this cohort exhibited diabetes or pre-diabetes.
- Both diabetes and higher HbA1c levels were significantly associated with adverse outcomes, including increased 6-month mortality and prolonged hospital stays.
- Further investigation into the benefits of improved glycemic control for stroke outcomes is warranted.
Aims:
Diabetes is a major risk factor for stroke. We aimed to investigate the prevalence of diabetes and pre-diabetes within a stroke cohort and examine the association of glycaemia status with mortality and morbidity.
Methods:
Inpatients aged ≥54 who presented with a diagnosis of stroke had a routine HbA1c measurement as part of the Austin Health Diabetes Discovery Initiative. Additional data were attained from hospital databases and Australian Stroke Clinical Registry. Outcomes included diabetes and pre-diabetes prevalence, length of stay, 6-month and in-hospital mortality, 28-day readmission rates, and 3-month modified Rankin scale score.
Results:
Between July 2013 and December 2015, 610 patients were studied. Of these, 31% had diabetes while 40% had pre-diabetes. Using multivariable regression analyses, the presence of diabetes was associated with higher odds of 6-month mortality (OR = 1.90, p = 0.022) and higher expected length of stay (IRR = 1.29, p = 0.004). Similarly, a higher HbA1c was associated with higher odds of 6-month mortality (OR = 1.27, p = 0.005) and higher expected length of stay (IRR = 1.08, p = 0.010).
Conclusions:
71% of this cohort had diabetes or pre-diabetes. Presence of diabetes and higher HbA1c were associated with higher 6-month mortality and length of stay. Further research is necessary to determine if improved glycaemic control may improve stroke outcomes.
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