Long-term risk-factor control and secondary prevention are insufficient after first TIA: Results from QregPV

Johan-Emil Bager1,2, Katarina Jood3,4, Annika Nordanstig3

  • 1Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

European Stroke Journal
|November 30, 2023
PubMed

Insights

Secondary prevention after a first transient ischemic attack (TIA) showed initial improvements in risk factors like blood pressure and cholesterol but then stagnated. Long-term treatment adherence decreased, indicating a need for better secondary prevention strategies in TIA patients.

Area of Science:

  • Neurology
  • Cardiovascular Medicine
  • Public Health

Background:

  • Transient ischemic attack (TIA) is a critical warning sign for stroke.
  • Long-term risk-factor management and secondary prevention strategies following a first TIA are not well-defined.
  • Effective secondary prevention is crucial to reduce recurrent cerebrovascular events.

Purpose of the Study:

  • To evaluate long-term risk-factor control and secondary prevention treatment adherence in patients after their first TIA.
  • To analyze trends in blood pressure, LDL cholesterol, smoking status, and medication use over five years post-TIA.
  • To identify gaps in care and potential areas for improvement in secondary prevention.

Main Methods:

  • Retrospective analysis of a Swedish primary-care register (QregPV) for patients diagnosed with a first TIA between 2010-2012.
  • Follow-up data collected for up to five years, assessing blood pressure, LDL-C, smoking, and use of antihypertensives, statins, and antiplatelet treatment/oral anticoagulation (APT/OAC).
  • Logistic mixed-effect models used to analyze changes in risk-factor control and treatment over time.

Main Results:

  • Initial improvements in achieving target blood pressure (<140/90 mmHg), LDL-C (<2.6 mmol/L), and non-smoking status were observed in the first year post-TIA (20% to 33%).
  • These improvements in risk-factor control stagnated between years two and five.
  • While 47% of patients achieved complete secondary prevention treatment in the first year, continued follow-up showed a yearly decrease in treatment adherence.

Conclusions:

  • Risk-factor control following a first TIA in this Swedish cohort was suboptimal.
  • There is significant potential to enhance secondary prevention treatment adherence in patients after a TIA.
  • Sustained management and monitoring are essential to maintain secondary prevention benefits long-term.
Abstract