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.
Abstract

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