Artículo
Optimizing the definitions of stroke, transient ischemic attack, and Infarction for research and application in clinical practice
Fecha
2017Registro en:
Front Neurol. 2017; 8: 537
Autor
Abbott, Anne
Silvestrini, Mauro
Topakian, Raffi
Golledge, Jonathan
Brunster, Alejandro
de Borst, Gert
Harbaugh, Robert
Doubal, Fergus
Rundek, Tatjana
Thapar, Ankur
Davies, Alun
Kam, Anthony
Wardlaw, Joanna
Institución
Resumen
Background and purpose
Until now, stroke and transient ischemic attack (TIA) have been clinically based terms which describe the presence and duration of characteristic neurological deficits attributable to intrinsic disorders of particular arteries supplying the brain, retina, or (sometimes) the spinal cord. Further, infarction has been pathologically defined as death of neural tissue due to reduced blood supply. Recently, it has been proposed we shift to definitions of stroke and TIA determined by neuroimaging results alone and that neuroimaging findings be equated with infarction.
Methods
We examined the scientific validity and clinical implications of these proposals using the existing published literature and our own experience in research and clinical practice.
Results
We found that the proposals to change to imaging-dominant definitions, as published, are ambiguous and inconsistent. Therefore, they cannot provide the standardization required in research or its application in clinical practice. Further, we found that the proposals are scientifically incorrect because neuroimaging findings do not always correlate with the clinical status or the presence of infarction. In addition, we found that attempts to use the proposals are disrupting research, are otherwise clinically unhelpful and do not solve the problems they were proposed to solve.
Conclusion
We advise that the proposals must not be accepted. In particular, we explain why the clinical focus of the definitions of stroke and TIA should be retained with continued sub-classification of these syndromes depending neuroimaging results (with or without other information) and that infarction should remain a pathological term. We outline ways the established clinically based definitions of stroke and TIA, and use of them, may be improved to encourage better patient outcomes in the modern era.