وفر 50٪ من خلال الاشتراك السنوي في مجرة واحصل على تصفح لا محدود لأفضل محتوى عربي على الإنترنت.
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هي الحالة التي يتم بها منع تدفق الدم إلى جزء من العضلة القلبية عبر تضيق أحد الشرايين بسبب جلطة دموية (خثرة)، حيث تتجمع كرات الدم الحمراء فوق بعضها بسبب تراكم الدهون والكوليسترول على جدران الشريان وتسبب إعاقة جريان طبيعية فيه. تشكل هذه الجلطة عامل خطورة بسبب موت الخلايا إذا لم يصلها الغذاء والأكسجين خلال دقائق.
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