31 August, 2015

التليفزيون و الانسداد الرئوي




حذرت دراسة طبية من أن مشاهدة التليفزيون لنحو خمس ساعات أو أكثر يوميا قد تؤدي إلى انسداد الشرايين الرئوية؛ مما يؤدى إلى الوفاة تأثرا بالانسداد الرئوي.
وأجريت على أكثر من 86 ألف شخص على مدى أكثر من 18 عاما، أن مشاهدة التلفزيون لساعات طويلة يعرض الأشخاص إلى مخاطر الانسداد الرئوي، لتزداد هذه المخاطر كلما اتسعت فترات المشاهدة .
وقال تورو شيراكاوا أستاذ أمراض القلب في جامعة "أوساكا" في اليابان، يجب على عشاق التلفزيون مزاولة بعض التمارين الرياضية بين الحين والآخر أثناء مشاهدة التلفزيون خاصة لفترات طويلة، لتقليل مخاطر الإصابة بالانسداد الرئوي.

13 August, 2015

Harvard Pediatric Asthma

The Most Commonly Asked Questions About Pediatric Asthma







لقراءة مقالتي عن حساسية الصدر عند الأطفال..
فضلاً اضغط هنا..




EPR




Asthma Predictive Index

The asthma predictive index (API) generated by these studies identifies the following risk factors for developing persistent asthma among children younger than 3 years of age who had four or more episodes of wheezing during the previous either (1) one of the following: parental history of asthma, a physician diagnosis of atopic dermatitis, or evidence of sensitization to aeroallergens, or (2) two of the following: evidence of sensitization to foods, greater than or equal to 4% peripheral blood eosinophilia, or wheezing apart from colds.
In a birth cohort study of 986 children 76% of the children who were diagnosed with asthma after six years of age had a positive asthma predictive index before three years of age; 97% of the children who did not have asthma after 6 years of age had a negative asthma predictive index before 3 years of age (4). The index was subsequently refined and tested in a clinical trial to examine if treating children who had a positive asthma predictive index would prevent development of persistent wheezing (8).

The asthma predictive index generated by these studies identifies the following risk factors for developing persistent asthma among children younger than 3 years of age who had four or more episodes of wheezing during the previous year: 


Modified from Spahn J and Covar R. Journal of Allergy and Clinical Immunology. 2008.

The asthma predictive index can help identifiy those who are, or who are not, at risk for developing asthma but is not sufficient to confirm the diagnosis.

Developed by Jose A. Castro-Rodriguez, et al., after following 986 children from birth through 13 years of age to identify children at risk for developing persistent asthma:

  • 76% children with asthma had a positive asthma predictive index before 3 years of age. 
  • 97% without asthma had a negative asthma predictive index before 3 years of age.

    Data obtained from long-term longitudinal studies of children who were enrolled at birth have generated such a predictive index. The studies first identified an index of risk factors for developing persistent asthma symptoms among children younger than 3 years of age who had more than three episodes of wheezing during the previous year. The index was then applied to a birth cohort that was followed through 13 years of age. Seventy-six percent of the children who were diagnosed with asthma after 6 years of age had a positive asthma predictive index before 3 years of age; 97 percent of the children who did not have asthma after 6 years of age had a negative asthma predictive index before 3 years of age (4). The index was subsequently refined and tested in a clinical trial to examine if treating children who had a positive asthma predictive index would prevent development of persistent wheezing (8).

    The asthma predictive index generated by these studies identifies the following risk factors for developing persistent asthma among children younger than 3 years of age who had four or more episodes of wheezing during the previous year:
  • either (1) one of the following: parental history of asthma, a physician diagnosis of atopic dermatitis, or evidence of sensitization to aeroallergens

  • or (2) two of the following: evidence of sensitization to foods, equal to or greater than 4% peripheral blood eosinophilia, or wheezing apart from colds.
  • 02 August, 2015

    لقاح لفيروس الايبولا



    اول لقاح فعال لفيروس الايبولا 

    أشارت نتائج اختبار أولية إلى ان لقاحا ضد فيروس “إيبولا” حقق حماية تصل إلى 100%، الأمر الذي قد يقلب واقع التعامل مع المرض، في حين لم تكن هناك أي أدوية أو لقاحات فعالة مختبرة ضد الفيروس، عندما انتشر بشكل واسع بغينيا في اواخر عام 2013 في أكبر تفش للمرض في تاريخه

    وتركزت التجارب الطبية على اللقاح (VSV-EBOV)، والتي بدأت العمل به وكالة الصحة العامة الكندية، ثم طورته شركة (ميرك) للمنتجات الدوائية.
    وقامت التجارب الطبية بمزج جزء من فيروس الإيبولا بجزء من فيروس آخر “آمن”، وذلك لتهيئة جهاز المناعة وتنشيطه للتغلب على فيروس الإيبولا.
    وأجريت تجارب فريدة لاستخدام اللقاح؛ حيث تم الحرص على تقديم اللقاح لأصدقاء وأقارب المصابين حتى يشكلوا “حلقة آمنة” تحد من انتشار الفيروس.
    http://elaqsa-news.com/world/542/