Antidepressant use and risk of recurrent stroke: a population-based nested case-control study

Area of Science:

• Neurology
• Pharmacology
• Epidemiology

Background:

• Antidepressants may increase stroke risk, but post-stroke safety data is limited.
• Understanding antidepressant effects after stroke is crucial for patient management.

Purpose of the Study:

• To investigate the association between antidepressant use and the risk of stroke recurrence.
• To differentiate risks associated with specific antidepressant classes.

Main Methods:

• Population-based nested case-control study using Taiwan's universal health care claims database (2000-2008).
• 19,825 stroke survivors (≥18 years) were followed; 3,536 recurrent stroke cases were matched with 6,679 controls.
• Multivariate conditional logistic regression analyzed antidepressant use and stroke recurrence risk.

Main Results:

• Tricyclic antidepressant (TCA) use was linked to a 1.41-fold increased risk of stroke recurrence.
• Selective serotonin reuptake inhibitors (SSRIs) and other antidepressants showed no significant association with recurrence.
• Abrupt cessation of TCAs (1-30 days) elevated stroke recurrence risk by 1.87-fold, with risk decreasing upon longer discontinuation.

Conclusions:

• Tricyclic antidepressants (TCAs), not SSRIs, are associated with a higher risk of stroke recurrence.
• The risk of stroke recurrence is particularly high with abrupt TCA discontinuation.
• Clinicians should exercise caution and monitor patients closely when prescribing TCAs post-stroke.