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Không nên uống thuốc trước khi đi làm xét nghiệm?  

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09:03 20/03/2014

Nhiều người do không để ý nên trước khi đi làm xét nghiệm vẫn dùng thuốc theo thói quen mà không biết rằng việc dùng thuốc như thế có thể làm sai lệch kết quả xét nghiệm,.. [..]

Nhiều người do không để ý nên trước khi đi làm xét nghiệm vẫn dùng thuốc theo thói quen mà không biết rằng việc dùng thuốc như thế có thể làm sai lệch kết quả xét nghiệm, hậu quả là việc điều trị bệnh không có kết quả, thậm chí ảnh hưởng xấu tới sức khỏe.



Có những xét nghiệm chỉ cho kết quả chính xác khi người bệnh nhịn đói 4 - 6 giờ trước khi làm xét nghiệm hoặc không ăn sáng sau một đêm ngủ dậy. Do sau khi ăn, chất dinh dưỡng sẽ chuyển hóa thành đường glucose để ruột hấp thụ và biến đổi năng lượng nuôi cơ thể. Khi đó, lượng đường hoặc mỡ trong máu tăng lên rất cao, nếu tiến hành xét nghiệm, kết quả thu được sẽ không chính xác. Không chỉ nhịn đói, người làm xét nghiệm cũng cần tránh sử dụng các chất kích thích (thuốc lá, cà phê...) vài giờ trước khi lấy máu để có kết quả chẩn đoán bệnh chính xác. Tuy nhiên, không phải bất kỳ xét nghiệm máu nào cũng cần nhịn đói. Chỉ một số bệnh cần kiểm tra đường huyết thì phải nhịn đói khi xét nghiệm: bệnh liên quan đến đường và mỡ (đái tháo đường), bệnh về tim mạch (mỡ máu...), bệnh về gan mật. Còn lại những xét nghiệm bệnh khác (khoảng 300 xét nghiệm) như HIV, suy thận, cường giáp, Alzheimer (mất trí nhớ ở người già)..., không cần nhịn đói.

Không nên dùng  thuốc khi đã có kế hoạch đi làm xét nghiệm vì thuốc có thể ảnh hưởng đến kết quả xét nghiệm. Nếu đang dùng loại thuốc gì, phải thông báo cho thầy thuốc. Những thuốc có thể làm tăng amylase máu bao gồm: asparaginase, aspirin, thuốc cholinergic, corticosteroids, indomethacin, thuốc lợi tiểu thiazide, methyldopa, thuốc gây nghiện (codein, morphin), thuốc ngừa thai uống và pentazocin.

Ở trẻ em, cần phải chuẩn bị tâm lý cho trẻ thật đầy đủ trước khi tiến hành xét nghiệm hay bất kỳ thủ thuật nào, tùy thuộc vào lứa tuổi của trẻ, trẻ đã trải qua xét nghiệm lần nào chưa và mức độ tin tưởng của trẻ.

DS. Nga Anh

Trên đây là một số thông tin tham khảo. Để biết thêm thông tin về sức khỏe, tâm lý các bạn hãy gọi điện tới tổng đài chăm sóc sức khỏe trực tuyến 19008908 hoặc 1900.6180 để nhận được hỗ trợ từ các chuyên gia.



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