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1900.6180

Mức cân lý tưởng trong thai kỳ?  

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02:09 26/09/2014

Sức khoẻ và trọng lượng lúc đẻ của trẻ liên quan nhiều đến việc người mẹ tăng cân như thế nào trong thai kỳ. Nếu người mẹ không tăng đủ cân trong thai kỳ sẽ có nhiều nguy.. [..]

Sức khoẻ và trọng lượng lúc đẻ của trẻ liên quan nhiều đến việc người mẹ tăng cân như thế nào trong thai kỳ. Nếu người mẹ không tăng đủ cân trong thai kỳ sẽ có nhiều nguy cơ sinh con nhẹ cân. Những trẻ này có nhiều nguy cơ bị những vấn đề về sức khoẻ và nhiều khó khăn trong quá trình phát triển. Vậy để có một đứa con khoẻ mạnh thì trong thai kỳ, người mẹ cần tăng bao nhiêu cân là đủ?

Sự tăng cân trong thai kỳ bao gồm những yếu tố sau:

Trẻ: 3.200g-3.600g

Nhau thai: 500g-900g

Dịch ối: 900g

Sự phì đại tuyến vú: 500g

Tử cung: 900g

Thể tích máu được gia tăng: 1.400g

Mỡ cơ thể: 2.300g

Mô và dịch cơ thể tăng: 1.800g-3.200g

Do đó người mẹ nên tăng cân theo mức sau: Mẹ có cân nặng bình thường trước khi mang thai nên tăng 11,3-16kg. Nếu người mẹ thiếu cân trước khi mang thai nên tăng 12,7-18,3kg. Trường hợp mẹ dư thừa cân trước khi mang thai, nên tăng 7-11,3kg. Nếu mẹ có song thai thì nên tăng 16-20,5kg

Trong ba tháng đầu của thai kỳ, người mẹ nên tăng 1kg, ba tháng giữa tăng 5kg, ba tháng cuối tăng 6kg. Có nhiều bà mẹ ít tăng cân hoặc không tăng cân trong 3 tháng đầu thai kỳ vị bị nghén nhưng phần lớn vẫn tăng được 0,9-1,8kg.

Trong 3 tháng giữa và cuối thai kỳ nên tăng trung bình 0,3-0,5kg/tuần. Khoảng tuần thứ 13 của thai kỳ, hàm lượng Estrogen bắt đầu tăng. Chất này tác động như một chất kích thích sự thèm ăn làm cho nhiều bà mẹ có cảm giác thèm một số loại thức ăn như đất, vữa tường, quả chua...

Các loại thức ăn này sẽ không tốt nếu chúng thay thế các thực phẩm giàu dinh dưỡng hoặc góp phần làm tăng cân quá mức nên phải chú ý chế độ ăn cho bà mẹ có thai. Trong thai kỳ đủ tháng, người mẹ cần tiêu thụ thêm 80.000Kcalo tức là trong 280 ngày thì bình quân mỗi ngày cần thêm 285Kcalo. Vậy phải sử dụng các loại thực phẩm giàu dinh dưỡng chứ không nên chỉ ăn quà vặt hoặc nước giải khát không có năng lượng.

Theo bảng nhu cầu dinh dưỡng khuyến nghị cho người Việt Nam (1977): khi phụ nữ có thai vào 6 tháng cuối, nhu cầu hàng ngày cần tăng thêm 350Kcalo, 15gProtein, còn Canxi phải có 1000mg, sắt có 30mg trong khẩu phần hàng ngày cộng thêm tăng cường vitamin nhóm B,C.

Theo BS. Phạm Thị Thục

Viện Dinh dưỡng quốc gia

Chú ý: Trên đây là những thông tin tham khảo về dinh dưỡng dành cho bà bầu, hãy gọi điện đến tổng đài 1900.6180 để nhận được sự tư vấn trực tiếp từ các bác sỹ.


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