Enhanced stroke prediction after transient ischemic attack: the role of triglycerides and free thyroxine: A retrospective cohort study
Küçük Resim Yok
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Lippincott Williams & Wilkins
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Transient ischemic attack (TIA) carries a substantial risk of early ischemic stroke, particularly within the first 48 hours. Although the ABCD(2) scoring system is widely used for short-term risk stratification, its exclusion of laboratory markers may limit predictive accuracy. To investigate whether selected biochemical markers - thyroid function tests, lipid profiles, and Hemoglobin A1c - hold prognostic value for early post-TIA stroke, and whether their integration enhances the predictive performance of the ABCD(2) scoring system. This retrospective cohort included 130 first-ever TIA patients admitted between March 2022 and 2024. ABCD(2) scores and laboratory parameters were recorded at admission. Patients were followed for 30 days and categorized based on stroke timing: early (<= 48 hours), intermediate (3-7 days), and late (8-30 days). Receiver operating characteristic (ROC) curve analysis and binary logistic regression were utilized to assess predictive performance and determine independent risk factors. Ischemic stroke occurred in 52 patients (40%) within 30 days, with 65% of events arising in the first 48 hours. Patients who developed stroke had significantly elevated triglyceride (TG) levels (P = .038), while those with early stroke exhibited significantly lower free thyroxine (fT4) levels (P < .001). ROC analysis identified TG >= 152 mg/dL (area under the curve (AUC): 0.607) and fT4 <= 1.17 ng/dL (AUC: 0.708) as critical thresholds. Integration of these biomarkers into the ABCD(2) model significantly improved its performance: the AUC rose from 0.647 (ABCD(2) alone) to 0.751 (with TG) and 0.775 (with fT4). Notably, fT4 demonstrated a high negative predictive value (88.6%) for ruling out early stroke. Elevated TG and reduced fT4 levels were independently associated with increased stroke risk after TIA. Incorporating these biomarkers into the ABCD(2) scoring system significantly enhanced early stroke prediction. In particular, low fT4 may serve as a robust marker to exclude high-risk cases. These findings support a multimodal risk stratification strategy incorporating clinical, biochemical, and imaging data. Validation through prospective multicenter studies is recommended.
Açıklama
Anahtar Kelimeler
Abcd(2) Score, Free Thyroxine, Ischemic Stroke, Transient Ischemic Attack, Triglycerides
Kaynak
Medicine
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
104
Sayı
46
