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A watershed stroke is defined as a brain ischemia that is localized to the vulnerable border zones between the tissues supplied by the anterior, posterior and middle cerebral arteries. The actual blood stream blockage/restriction site can be located far away from the infarcts. Watershed locations are those border-zone regions in the brain supplied by the major cerebral arteries where blood supply is decreased. Watershed strokes are a concern because they comprise approximately 10% of all ischemic stroke cases. The watershed zones themselves are particularly susceptible to infarction from global ischemia as the distal nature of the vasculature predisposes these areas to be most sensitive to profound hypoperfusion.

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  • سكتة منطقة المهطل (ar)
  • Watershed stroke (en)
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  • سكتة منطقة المهطل أو سكتة منطقة الحافة هي سكتة دماغية إفقارية تصيب منطقة المهطل (حواف الأنسجة التي تحصل على إمداد دموي من أكثر من مصدر)، وتشكل سكتة منطقة المهطل ما يقترب من 10٪ من إجمالي السكتات الدماغية الإقفارية، وذلك لكون هذه المناطق أكثر عرضة للإفقار وأكثر تأثرا بنقص التروية الدماغية بسبب طبيعة موقعها البعيد عن الأوعية الدموية. يُستخدم التصوير المقطعي المحوسب والتصوير بالرنين المغناطيسي لتشخيص سكتة منطقة المهطل، ومن ثَم يتوفر عدد من خيارات العلاج، منها علاج التصلب العصيديوتوسيع الأوعية الدموية المسدودة، بجانب العلاج التأهيلي والوقاية المستقبلية من السكتات الدماغية. (ar)
  • A watershed stroke is defined as a brain ischemia that is localized to the vulnerable border zones between the tissues supplied by the anterior, posterior and middle cerebral arteries. The actual blood stream blockage/restriction site can be located far away from the infarcts. Watershed locations are those border-zone regions in the brain supplied by the major cerebral arteries where blood supply is decreased. Watershed strokes are a concern because they comprise approximately 10% of all ischemic stroke cases. The watershed zones themselves are particularly susceptible to infarction from global ischemia as the distal nature of the vasculature predisposes these areas to be most sensitive to profound hypoperfusion. (en)
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  • Brain ischemia (en)
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  • Brain ischemia (en)
  • Internal carotid artery (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Gray513.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Bluthirnschranke_nach_Infarkt_nativ_und_KM.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Gray's_Anatomy_plate_517_brain.png
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