Isolated Upper Limb Weakness From Ischemic Stroke: Mechanisms and Outcome

TOPÇUOĞLU M. A., Rocha E. A., Siddiqui A. K., Mills B. B., Silva G. S., Schwamm L. H., ...Daha Fazla

JOURNAL OF STROKE & CEREBROVASCULAR DISEASES, cilt.27, sa.10, ss.2712-2719, 2018 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 27 Sayı: 10
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.jstrokecerebrovasdis.2018.05.050
  • Dergi Adı: JOURNAL OF STROKE & CEREBROVASCULAR DISEASES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2712-2719
  • Anahtar Kelimeler: Stroke, carotid stenosis, monoparesis, diffusion weighted imaging, CT-angiography, MR-angiography, MIDDLE CEREBRAL-ARTERY, CAROTID PLAQUE, CAUSATIVE CLASSIFICATION, LESION PATTERNS, CT ANGIOGRAPHY, STENOSIS, INFARCTION, LOCALIZATION, INFLAMMATION, ASSOCIATION
  • Hacettepe Üniversitesi Adresli: Evet

Özet

Objective: To characterize isolated upper extremity (UE) weakness from stroke. Methods: In our Get with the Guidelines-Stroke dataset (n = 7643), 87 patients (1.14%) had isolated UE weakness and underwent thorough stroke evaluation with diffusion-weighted magnetic resonance imaging and good-quality arterial imaging. We analyzed clinical-imaging features, etiology, management, and outcome. Since isolated UE weakness is typically associated with contralateral hand-knob area infarcts, patients were classified into Group-A (motor strip infarct) or Group-B (non-motor strip infarct). Results: The mean age was 68 years; 66% were male, 72% had hypertension, 22% diabetes, 53% hyperlipidemia, and 16% were smokers. In Group-A (n = 71), 18 patients had single and 53 had multiple infarcts involving the contralateral motor strip. In Group-B (n = 16), 6 patients had contralateral subcortical white matter infarcts, 9 had bihemispheric infarcts and 1 had a brainstem infarct. Compared to Group-B, patients in Group-A more often had carotid artery stenosis or irregular plaque (84.5% versus 50%, P = .006) and large-artery atherosclerosis mechanism (46% versus 19%, P = .05), and less often cardioembolic mechanism (13% versus 44%, P = .008). Among 36 patients with large-artery mechanism, 27 had less than 70% stenosis including 19 with plaque ulceration/thrombus. Recurrent strokes occurred in 10 patients (11.5%), including 5 with mild-moderate carotid stenosis and plaque ulceration/thrombosis, over 1515 days follow-up. Conclusion: Stroke mechanism in acute isolated UE weakness is variable. Contralateral motor-strip infarcts are associated with carotid stenosis, often with plaque ulceration ("vulnerable carotid plaque"), and infarcts in other locations with cardioembolism. Recurrent stroke risk is high especially with mild-moderate carotid artery stenosis and plaque ulceration/thrombus.