{"id":174,"date":"2019-04-20T17:32:13","date_gmt":"2019-04-20T10:32:13","guid":{"rendered":"https:\/\/www.baohotoandien.com\/blog\/?p=174"},"modified":"2021-06-21T00:34:17","modified_gmt":"2021-06-20T17:34:17","slug":"o-nhiem-tieng-on","status":"publish","type":"post","link":"https:\/\/baohotoandien.com\/blog\/o-nhiem-tieng-on\/","title":{"rendered":"\u00d4 nhi\u1ec5m ti\u1ebfng \u1ed3n v\u00e0 nh\u1eefng t\u00e1c h\u1ea1i th\u01b0\u1eddng b\u1ecb b\u1ecf qua"},"content":{"rendered":"
\n

Ch\u00fang ta \u0111ang \u1edf th\u1eddi \u0111\u1ea1i m\u00e0 s\u1ef1 im l\u1eb7ng qu\u00fd gi\u00e1 h\u01a1n bao gi\u1edd h\u1ebft<\/p>\n<\/blockquote>\n

\u0110\u1ea7u ti\u00ean, ta ph\u1ea3i hi\u1ec3u th\u1ebf n\u00e0o l\u00e0 ti\u1ebfng \u1ed3n v\u00e0 \u00f4 nhi\u1ec5m ti\u1ebfng \u1ed3n<\/p>\n

\u0110\u1ecbnh ngh\u0129a<\/h2>\n

Ti\u1ebfng \u1ed3n<\/strong> (noise) l\u00e0 nh\u1eefng \u00e2m thanh kh\u00f4ng mong mu\u1ed1n g\u00e2y kh\u00f3 ch\u1ecbu cho ng\u01b0\u1eddi nghe, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh l\u00e0m vi\u1ec7c, h\u1ecdc t\u1eadp v\u00e0 ngh\u1ec9 ng\u01a1i<\/p>\n

\u00d4 nhi\u1ec5m ti\u1ebfng \u1ed3n<\/strong> (Noise pollution ho\u1eb7c noise disturbance) l\u00e0 ti\u1ebfng \u1ed3n trong m\u00f4i tr\u01b0\u1eddng v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nh\u1ea5t \u0111\u1ecbnh g\u00e2y kh\u00f3 ch\u1ecbu cho ng\u01b0\u1eddi ho\u1eb7c \u0111\u1ed9ng v\u1eadt<\/p>\n

\"\"<\/p>\n

V\u1eady th\u00ec ng\u01b0\u1ee1ng kh\u00f3 ch\u1ecbu n\u00e0y \u1edf \u0111\u00e2u?<\/p>\n

T\u1ea5t nhi\u00ean, t\u00f9y theo m\u1ee9c \u0111\u1ed9 nh\u1ea1y c\u1ea3m c\u1ee7a m\u1ed7i ng\u01b0\u1eddi th\u00ec con s\u1ed1 n\u00e0y s\u1ebd c\u00f3 ph\u1ea7n ch\u00eanh l\u1ec7ch nh\u01b0ng v\u1ec1 c\u01a1 b\u1ea3n ti\u1ebfng \u1ed3n c\u0169ng ch\u1ec9 l\u00e0 \u00e2m thanh n\u00ean \u0111\u01a1n v\u1ecb \u0111o \u0111\u1ed9 \u1ed3n c\u0169ng t\u00ednh l\u00e0 dB (decibel) \u00e2m thanh n\u00e0y ph\u1ea3i n\u1eb1m trong ng\u01b0\u1ee1ng nghe \u0111\u01b0\u1ee3c c\u1ee7a con ng\u01b0\u1eddi. T\u1ee9c l\u00e0 kho\u1ea3ng t\u1eeb 0 \u0111\u1ebfn 125 dB. D\u01b0\u1edbi 40 dB th\u00ec nghe r\u1ea5t kh\u00f3 c\u00f2n tr\u00ean 105 dB th\u00ec tai s\u1ebd b\u1ecb \u0111au \u0111\u1edbn v\u00e0 tr\u00ean 115 dB trong kho\u1ea3ng th\u1eddi gian d\u00e0i th\u00ec s\u1ebd b\u1ecb \u0111i\u1ebfc v\u0129nh vi\u1ec5n. Tr\u00ean 130 dB b\u1ed9 n\u00e3o s\u1ebd g\u1ea7n nh\u01b0 ch\u1ebft.<\/p>\n

M\u1ed9t v\u00e0i v\u00ed d\u1ee5 v\u1ec1 \u0111\u1ed9 \u1ed3n<\/h2>\n

10-20 dB – Gi\u00f3 vi vu qua l\u00e1 c\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 tr\u1ea1ng th\u00e1i y\u00ean t\u1ec9nh
\n30 dB – Th\u00ec th\u1ea7m (trong ph\u00f2ng ng\u1ee7)
\n40 dB – Ti\u1ebfng n\u00f3i chuy\u1ec7n b\u00ecnh th\u01b0\u1eddng
\n50 dB – Ti\u1ebfng m\u00e1y gi\u1eb7t, \u1ed3n \u1edf si\u00eau th\u1ecb, c\u00f3 g\u00e2y phi\u1ec1n nh\u01b0ng c\u00f2n ch\u1ecbu \u0111\u01b0\u1ee3c
\n55 dB -80 dB – \u0110\u1ed9ng c\u01a1 xe h\u01a1i, xe m\u00e1y, g\u00e2y kh\u00f3 ch\u1ecbu, m\u1ec7t m\u1ecfi
\n80 dB – 85 dB – M\u00e1y c\u1eaft c\u1ecf, h\u00fat b\u1ee5i, c\u1eaft g\u1ed7, l\u00e0m r\u1ea5t kh\u00f3 ch\u1ecbu
\n90 dB – 100 dB – ph\u00e1t ra \u1edf C\u00f4ng tr\u01b0\u1eddng x\u00e2y d\u1ef1ng, \u1ed3n \u1edf m\u1ee9c nguy hi\u1ec3m
\n120dB – 140 dB – M\u00e1y bay l\u00fac c\u1ea5t c\u00e1nh, \u1ed3n qu\u00e1 l\u1edbn g\u00e2y t\u1ed5n th\u01b0\u01a1ng t\u00e2m tr\u00ed<\/p>\n

C\u00e0ng \u1edf xa ngu\u1ed3n ti\u1ebfng \u0111\u1ed9ng th\u00ec \u0111\u1ed9 \u1ed3n gi\u1ea3m \u0111i v\u00e0 gi\u1ea3m r\u1ea5t nhanh. Gi\u1eefa l\u00f2ng \u0111\u01b0\u1eddng, ti\u1ebfng \u1ed3n c\u1ee7a xe c\u1ed9 c\u00f3 th\u1ec3 l\u00e0 80dB nh\u01b0ng tr\u00ean l\u1ec1 \u0111\u01b0\u1eddng n\u01a1i ng\u01b0\u1eddi \u0111i b\u1ed9 ch\u1ec9 c\u00f2n kh\u1ea3ng 60dB ch\u1eb3ng h\u1ea1n.
\nKh\u00f4ng c\u00f3 m\u00e1y \u0111o th\u00ec c\u00f3 th\u1ec3 m\u1ed9t c\u00e1ch ph\u1ecfng ch\u1eebng, d\u1ef1a tr\u00ean kh\u1ea3 n\u0103ng ph\u00e2n bi\u1ec7t c\u1ee7a tai ng\u01b0\u1eddi: ti\u1ebfng \u0111\u1ed9ng inh \u1ecfi l\u00e0 c\u1ee1 80 dB, nh\u1ee9c tai l\u00e0 kho\u1ea3ng 90dB. Tr\u00ean n\u1eefa th\u00ec ta kh\u00f4ng ch\u1ecbu n\u1ed5i v\u00e0 ph\u1ea3n \u1ee9ng t\u1ef1 b\u1ea3o v\u1ec7 t\u1ee9c th\u00ec l\u00e0 \u0111\u01b0a tay b\u1ecbt tai l\u1ea1i. S\u1ed1ng v\u00e0 l\u00e0m vi\u1ec7c n\u01a1i \u1ed3n l\u00e2u d\u1ea7n c\u0169ng \u201cquen\u201d, ta h\u1ebft hay b\u1edbt th\u1ea5y kh\u00f3 ch\u1ecbu nh\u01b0ng h\u1eadu qu\u1ea3 c\u1ee7a ti\u1ebfng \u1ed3n v\u1eabn \u201c\u00e2m th\u1ea7m ghi\u201d v\u00e0o c\u01a1 th\u1ec3 ta<\/p>\n

C\u00e1ch \u0111o \u0111\u1ed9 \u1ed3n<\/strong><\/h2>\n

Ch\u1ec9 c\u1ea7n g\u00f5 Google c\u1ee5m t\u1eeb “\u0111o \u0111\u1ed9 \u1ed3n” trong v\u00f2ng 0.51s l\u00e0 ra t\u1edbi 3,870,000 k\u1ebft qu\u1ea3. Nh\u00ecn chung thi\u1ebft b\u1ecb \u0111o \u1ed3n c\u00f3 gi\u00e1 giao \u0111\u1ed9ng c\u0169ng h\u01a1i r\u1ed9ng, t\u1eeb 2-3 tri\u1ec7u cho t\u1edbi 3-4 ch\u1ee5c tri\u1ec7u c\u0169ng c\u00f3.
\nNh\u01b0ng m\u00ecnh \u0111o \u0111\u1ed9 \u1ed3n ph\u1ed5 th\u00f4ng th\u00f4i th\u00ec c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng app n\u00e0y (Hi\u1ec7n v\u1eabn mi\u1ec5n ph\u00ed v\u00e0 kh\u00e1 nh\u1eb9 ch\u1ec9 c\u00f3 th\u00f4i n\u00ean t\u1ea3i ok nha)<\/p>\n

\"\"Nh\u01b0 m\u00ecnh \u0111ang \u1edf trong m\u1ed9t c\u1eeda h\u00e0ng n\u1eb1m s\u00e1t m\u1eb7t \u0111\u01b0\u1eddng c\u00f3 m\u1ed9t l\u1edbp k\u00ednh ch\u1ed1ng \u1ed3n. Hi\u1ec7n \u0111\u1ed9 \u1ed3n \u0111o \u0111\u01b0\u1ee3c l\u00e0 65.3 V\u1eady l\u00e0 v\u1eabn n\u1eb1m trong kho\u1ea3ng ch\u1ecbu \u0111\u01b0\u1ee3c, kh\u00f4ng c\u1ea7n \u0111eo thi\u1ebft b\u1ecb h\u1ed7 tr\u1ee3 ch\u1ed1ng \u1ed3n.<\/p>\n

\"\u1ee8ng<\/p>\n

M\u1ee9c \u1ed3n cho ph\u00e9p t\u1ea1i c\u00e1c v\u1ecb tr\u00ed l\u00e0m vi\u1ec7c.<\/strong><\/h2>\n
    \n
  • D\u01b0\u1edbi 80 dB, kh\u00f4ng c\u1ea7n thi\u1ebft b\u1ecb ch\u1ed1ng \u1ed3n. Ta c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u1ef1ng \u0111\u01b0\u1ee3c. Nh\u01b0ng tr\u00ean 80 dB th\u00ec ph\u1ea3i b\u1eaft \u0111\u1ea7u th\u1eadn tr\u1ecdng ch\u00fa \u00fd \u0111\u1ebfn m\u1ee9c nguy hi\u1ec3m<\/li>\n
  • \u1ede m\u1ee9c 90 dB, kh\u00f4ng mang b\u1ea3o v\u1ec7, m\u1ed7i ng\u00e0y s\u1ee9c ta ch\u1ec9 ch\u1ecbu t\u1ed1i \u0111a m\u1ed9t gi\u1edd, nhi\u1ec1u h\u01a1n th\u00ec s\u1ebd c\u00f3 th\u01b0\u01a1ng t\u1ed5n v\u1ec1 tai (\u0111i\u1ebfc ch\u1eb3ng h\u1ea1n)<\/li>\n
  • N\u1ebfu ph\u1ea3i ch\u1ecbu 100dB th\u00ec m\u1ed7i ng\u00e0y ch\u1ec9 t\u1ed1i \u0111a 15 ph\u00fat, c\u00f4ng nh\u00e2n x\u00e2y d\u1ef1ng ph\u1ea3i mang thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 \u1edf tai l\u00e0 th\u1ebf.<\/li>\n
  • \u1ede m\u1ee9c tr\u00ean 105 dB th\u00ec m\u1ed7i ng\u00e0y con ng\u01b0\u1eddi ch\u1ec9 c\u00f3 th\u1ec3 ch\u1ecbu t\u1ed1i \u0111a 5 ph\u00fat, th\u01b0\u01a1ng t\u1ed5n sau \u0111\u00f3 (ch\u1eb3ng nh\u1eefng v\u1ec1 tai m\u00e0 c\u00f2n c\u00f3 th\u1ec3 th\u01b0\u01a1ng t\u1ed5n v\u1ec1 n\u00e3o).<\/li>\n<\/ul>\n

    C\u00e1c th\u01b0\u01a1ng t\u1ed5n thay \u0111\u1ed5i t\u00f9y theo \u0111\u1ed9 \u1ed3n, kho\u1ea3ng c\u00e1ch gi\u1eefa ta v\u1edbi ngu\u1ed3n \u1ed3n v\u00e0 th\u1eddi gian ch\u1ecbu \u1ed3n. Nhi\u1ec1u th\u01b0\u01a1ng t\u1ed5n – v\u1ec1 tai ch\u1eb3ng h\u1ea1n – l\u00e0 nh\u1eefng th\u01b0\u01a1ng t\u1ed5n v\u0129nh vi\u1ec5n, kh\u00f4ng t\u00e1i t\u1ea1o l\u1ea1i \u0111\u01b0\u1ee3c. Ch\u00ednh v\u00ec v\u1eady m\u00e0 ta ph\u1ea3i b\u1ea3o v\u1ec7 ch\u1ee9 \u0111\u1eebng \u0111\u1ee3i \u0111\u1ebfn khi t\u1ed5n th\u01b0\u01a1ng nh\u00e9.<\/p>\n

    T\u00e1c h\u1ea1i c\u1ee7a ti\u1ebfng \u1ed3n<\/strong><\/h2>\n

    VD: B\u1ea3ng m\u1ee9c \u0111\u1ed9 ti\u1ebfng \u1ed3n v\u00e0 ph\u1ea3n \u1ee9ng c\u1ee7a ng\u01b0\u1eddi.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    M\u1ee9c Decibel<\/b><\/td>\nNgu\u1ed3n ti\u00eau bi\u1ec3u<\/b><\/td>\nPh\u1ea3n \u1ee9ng c\u1ee7a con ng\u01b0\u1eddi<\/b><\/td>\n<\/tr>\n
    150<\/span><\/p>\n

    140<\/span><\/td>\n

    		Ti\u1ebfng n\u1ed5 \u0111\u1ed9ng c\u01a1 ph\u1ea3n l\u1ef1c<\/span><\/td>\n\u00d0i\u1ebfc ho\u00e0n to\u00e0n<\/span><\/td>\n<\/tr>\n
    130<\/span><\/td>\nGi\u1edbi h\u1ea1n t\u1ed1i \u0111a c\u1ee7a ti\u1ebfng n\u00f3i<\/span><\/td>\n<\/td>\n<\/tr>\n
    120<\/span><\/td>\nTi\u1ebfng n\u1ed5 \u0111\u1ed9ng c\u01a1 ph\u1ea3n l\u1ef1c c\u00e1ch 200 ft<\/span><\/td>\n<\/td>\n<\/tr>\n
    110<\/span><\/td>\nDiscothegue<\/span><\/p>\n

    K\u00e8n xe h\u01a1i c\u00e1ch 3ft<\/span><\/p>\n

    M\u00e1y \u0111\u1eadp kim lo\u1ea1i<\/span><\/td>\n

    		<\/td>\n<\/tr>\n
    100<\/span><\/td>\nTi\u1ebfng n\u1ed5 ph\u1ea3n l\u1ef1c c\u01a1 c\u00e1ch 2000 ft<\/span><\/p>\n

    S\u00fang n\u1ed5 c\u00e1ch 0,5 ft<\/span><\/td>\n

    		R\u1ea5t c\u00f3 h\u1ea1i<\/span><\/td>\n<\/tr>\n
    90<\/span><\/td>\nTr\u1ea1m xe ng\u1ea7m New York<\/span><\/p>\n

    Xe t\u1ea3i n\u1eb7ng c\u00e1ch 50 ft<\/span><\/td>\n

    		H\u1ea1i th\u00ednh gi\u00e1c (8 gi\u1edd)<\/span><\/td>\n<\/tr>\n
    80<\/span><\/td>\nB\u00faa h\u01a1i c\u00e1ch 50 ft<\/span><\/td>\nC\u00f3 h\u1ea1i<\/span><\/td>\n<\/tr>\n
    70<\/span><\/td>\nTi\u1ebfng th\u1eafng xe l\u1eeda c\u00e1ch 50 ft<\/span><\/p>\n

    L\u01b0u th\u00f4ng tr\u00ean xa l\u1ed9 c\u00e1ch 50ft<\/span><\/td>\n

    		nghe \u0111i\u1ec7n tho\u1ea1i<\/span><\/td>\n<\/tr>\n
    60<\/span><\/td>\nM\u00e1y \u0111i\u1ec1u ho\u00e0 kh\u00f4ng kh\u00ed c\u00e1ch 20 ft<\/span><\/td>\nG\u00e2y ch\u00fa \u00fd (Intrusive)<\/span><\/td>\n<\/tr>\n
    50<\/span><\/p>\n

    40<\/span><\/td>\n

    		L\u01b0u th\u00f4ng c\u1ee7a xe h\u01a1i nh\u1eb9 c\u00e1ch 50 ft<\/span><\/p>\n

    Ph\u00f2ng kh\u00e1ch<\/span><\/p>\n

    Ph\u00f2ng ng\u1ee7<\/span><\/td>\n

    		Y\u00ean t\u0129nh<\/span><\/td>\n<\/tr>\n
    30<\/span><\/td>\nTh\u01b0 vi\u1ec7n<\/span><\/p>\n

    Ti\u1ebfng th\u00ec th\u1ea7m<\/span><\/td>\n

    		R\u1ea5t y\u00ean t\u0129nh<\/span><\/td>\n<\/tr>\n
    20<\/span><\/td>\nPh\u00f2ng thu thanh<\/span><\/td>\n<\/td>\n<\/tr>\n
    10<\/span><\/p>\n

    0<\/span><\/td>\n

    		<\/td>\nTai c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c<\/span><\/p>\n

    Ng\u01b0\u1ee1ng nghe \u0111\u01b0\u1ee3c<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Ngu\u1ed3n: H\u1ed9i \u0111\u1ed3ng Ch\u1ea5t l\u01b0\u1ee3ng m\u00f4i tr\u01b0\u1eddng Hoa K\u1ef3 (1970) trong Dasmann (1984)<\/p>\n

    C\u01a1 th\u1ec3 ph\u1ea3n \u1ee9ng v\u1edbi ti\u1ebfng \u1ed3n l\u1edbn<\/h3>\n

    \u0110\u1ea7u ti\u00ean, \u00e2m thanh qu\u00e1 l\u1edbn l\u00e0m gi\u1ea3m th\u00ednh l\u1ef1c v\u00e0 l\u00e0m h\u1ecfng c\u00e1c t\u1ebf b\u00e0o ti\u1ebfp th\u1ee5 \u00e2m thanh (auditory sensory cells) trong \u1ed1c tai (cochlea). C\u00e1c t\u1ebf b\u00e0o n\u00e0y kh\u00f4ng th\u1ec3 t\u00e1i t\u1ea1o n\u00ean ng\u01b0\u1eddi nghe r\u1ea5t kh\u00f3 ph\u1ee5c h\u1ed3i th\u00ednh gi\u00e1c.
    \nNghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y cho th\u1ea5y ti\u1ebfng xe giao th\u00f4ng \u0111\u01b0\u1eddng b\u1ed9 v\u00e0 ti\u1ebfng \u1ed3n m\u00e1y bay l\u00e0m t\u0103ng nguy c\u01a1 b\u1ecb cao huy\u1ebft \u00e1p, \u0111\u1eb7c bi\u1ec7t v\u00e0o ban \u0111\u00eam. Ngo\u00e0i ra, ti\u1ebfng \u1ed3n c\u00f2n khi\u1ebfn ng\u01b0\u1eddi nghe c\u1ea3m th\u1ea5y kh\u00f3 ch\u1ecbu, phi\u1ec1n to\u00e1i, r\u1ed1i lo\u1ea1n v\u00e0 b\u1ecb x\u00e2m ph\u1ea1m s\u1ef1 ri\u00eang t\u01b0, g\u00e2y c\u1ea3n tr\u1edf c\u00f4ng vi\u1ec7c.<\/p>\n

    C\u01a1 th\u1ec3 con ng\u01b0\u1eddi v\u1eabn c\u00f3 th\u1ec3 ph\u1ea3n \u1ee9ng v\u1edbi \u00e2m thanh trong khi ng\u1ee7. Ti\u1ebfng \u1ed3n \u0111\u1ed9t ng\u1ed9t l\u00e0m ng\u01b0\u1eddi ta gi\u1eadt m\u00ecnh, m\u1ea5t ng\u1ee7.H\u01a1n n\u1eefa, n\u00f3 c\u00f2n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u01a1i th\u1edf, nh\u1ecbp tim v\u00e0 ph\u1ea3n \u1ee9ng c\u1ee7a c\u01a1 th\u1ec3. V\u1ec1 l\u00e2u d\u00e0i c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng r\u1ed1i lo\u1ea1n gi\u1ea5c ng\u1ee7. Ng\u01b0\u1eddi gi\u00e0 ho\u1eb7c tr\u1ebb em d\u1ec5 b\u1ecb t\u00e1c \u0111\u1ed9ng b\u1edfi ti\u1ebfng \u1ed3n h\u01a1n. Tuy nhi\u00ean, nh\u00e2n vi\u00ean l\u00e0m vi\u1ec7c theo ca ho\u1eb7c ng\u01b0\u1eddi c\u00f3 s\u1ee9c kh\u1ecfe k\u00e9m c\u0169ng kh\u00f4ng ngo\u1ea1i l\u1ec7.<\/p>\n

    Nh\u1eefng tr\u1ea1ng th\u00e1i n\u00e0y s\u1ebd g\u00f3p ph\u1ea7n l\u00e0m t\u0103ng m\u1ee9c \u0111\u1ed9 c\u0103ng th\u1eb3ng, lo l\u1eafng, m\u1ea5t t\u1eadp trung v\u00e0 \u1ea3nh h\u01b0\u1edfng l\u00e2u d\u00e0i \u0111\u1ebfn s\u1ee9c kh\u1ecfe tinh th\u1ea7n. C\u1ee5 th\u1ec3, c\u01a1 th\u1ec3 s\u1ebd c\u00f3 c\u00e1c ph\u1ea3n \u1ee9ng sinh l\u00fd, nh\u01b0 t\u0103ng t\u1ed1c \u0111\u1ed9 nh\u1ecbp tim d\u1eabn \u0111\u1ebfn b\u1ec7nh cao huy\u1ebft \u00e1p. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn c\u00e1c nguy c\u01a1 li\u00ean quan \u0111\u1ebfm tim m\u1ea1ch nh\u01b0 t\u0103ng n\u1ed3ng \u0111\u1ed9 glucose trong m\u00e1u, m\u1ee1 m\u00e1u, b\u00e9o ph\u00ec, x\u01a1 v\u1eefa \u0111\u1ed9ng m\u1ea1ch (thu h\u1eb9p \u0111\u1ed9ng m\u1ea1ch do ch\u1ea5t b\u00e9o l\u1eafng \u0111\u1ecdng) v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 c\u00e1c bi\u1ebfn c\u1ed1 nghi\u00eam tr\u1ecdng nh\u01b0 \u0111au tim v\u00e0 \u0111\u1ed9t qu\u1ef5.<\/p>\n

    \"\"<\/p>\n

    C\u0103ng th\u1eb3ng k\u00e9o d\u00e0i<\/h3>\n

    Ngo\u00e0i ra, kh\u00f4ng ch\u1ec9 ti\u1ebfng \u1ed3n v\u1edbi \u00e2m l\u01b0\u1ee3ng l\u1edbn l\u00e0 g\u00e2y h\u1ea1i. Nhi\u1ec1u b\u00e1o c\u00e1o g\u1ea7n \u0111\u00e2y cho th\u1ea5y \u00e2m thanh dao \u0111\u1ed9ng v\u1edbi t\u1ea7n s\u1ed1 cao (ultrasound) tuy v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng nghe c\u1ee7a tai ng\u01b0\u1eddi nh\u01b0ng v\u1eabn c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn c\u01a1 th\u1ec3. Nhi\u1ec1u \u0111\u1ecba ph\u01b0\u01a1ng n\u1eb1m trong v\u00f9ng ph\u00e1t ra \u00e2m thanh n\u00e0y. M\u1eb7c d\u00f9 ph\u1ea1m vi \u1ea3nh h\u01b0\u1edfng c\u1ee7a n\u00f3 r\u1ea5t r\u1ed9ng nh\u01b0ng ng\u01b0\u1eddi d\u00e2n v\u1eabn kh\u00f4ng th\u1ec3 truy ra \u0111\u01b0\u1ee3c ngu\u1ed3n ph\u00e1t ra \u00e2m thanh. \u1ede m\u1ee9c \u0111\u1ed9 th\u1ea5p, n\u00f3 khi\u1ebfn ng\u01b0\u1eddi nghe c\u1ea3m th\u1ea5y b\u1ed3n ch\u1ed3n v\u00e0 kh\u00f3 ch\u1ecbu. N\u1eb7ng h\u01a1n, ng\u01b0\u1eddi nghe s\u1ebd c\u00f3 c\u00e1c tri\u1ec7u ch\u1ee9ng cho\u00e1ng v\u00e1ng, nh\u1ee9c \u0111\u1ea7u v\u00e0 bu\u1ed3n n\u00f4n.<\/p>\n

    M\u1ed9t t\u00e1c h\u1ea1i kh\u00e1c c\u1ee7a ti\u1ebfng \u1ed3n l\u00e0 n\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn vi\u1ec7c h\u1ecdc c\u1ee7a tr\u1ebb. Nhi\u1ec1u nghi\u00ean c\u1ee9u \u0111\u00e3 ch\u1ec9 ra ti\u1ebfng \u1ed3n t\u1eeb giao th\u00f4ng \u0111\u01b0\u1eddng b\u1ed9 c\u00f3 t\u00e1c \u0111\u1ed9ng x\u1ea5u \u0111\u1ebfn kh\u1ea3 n\u0103ng \u0111\u1ecdc hi\u1ec3u v\u00e0 tr\u00ed nh\u1edb d\u00e0i h\u1ea1n c\u1ee7a tr\u1ebb em. Ti\u1ebfng \u1ed3n \u0111\u1ed9t ng\u1ed9t ho\u1eb7c ph\u00e1t ra th\u01b0\u1eddng xuy\u00ean khi\u1ebfn c\u00e1c em \u0111\u1ecdc hi\u1ec3u v\u00e0 ghi nh\u1edb k\u00e9m h\u01a1n.<\/p>\n

    C\u00f3 m\u1ed9t \u0111i\u1ec1u ch\u1eafc ch\u1eafn l\u00e0 \u00f4 nhi\u1ec5m ti\u1ebfng \u1ed3n hi\u1ec7n \u0111ang \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi v\u00e0 l\u00e0 nguy c\u01a1 g\u00e2y h\u1ea1i \u0111\u1ebfn s\u1ee9c kh\u1ecfe. V\u00ec v\u1eady, ch\u00fang ta c\u1ea7n c\u00f3 bi\u1ec7n ph\u00e1p l\u00e0m gi\u1ea3m ti\u1ebfng \u1ed3n b\u1eb1ng r\u00e0o c\u1ea3n ho\u1eb7c v\u1eadt li\u1ec7u c\u00e1ch \u00e2m. H\u01a1n h\u1ebft v\u1eabn l\u00e0 \u00fd th\u1ee9c c\u1ee7a ng\u01b0\u1eddi d\u00e2n, n\u00ean tr\u00e1nh t\u1ea1o ra nh\u1eefng ti\u1ebfng \u1ed3n kh\u00f4ng c\u1ea7n thi\u1ebft, l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ng\u01b0\u1eddi xung quanh.<\/p>\n

    Ph\u00f2ng ng\u1eeba – H\u01b0\u1edbng kh\u1eafc ph\u1ee5c<\/h2>\n

    C\u00e1c c\u01a1 quan c\u00f3 ch\u1ee9c n\u0103ng qu\u1ea3n l\u00fd x\u00e3 h\u1ed9i c\u1ea7n \u0111\u01b0a ra nh\u1eefng quy \u0111\u1ecbnh nh\u1eb1m ng\u0103n ch\u1eb7n t\u00ecnh tr\u1ea1ng \u00f4 nhi\u1ec5m ti\u1ebfng \u1ed3n tr\u00ean \u0111\u01b0\u1eddng ph\u1ed1 (kh\u00f4ng cho l\u1ea1m d\u1ee5ng c\u00f2i xe; kh\u00f4ng cho c\u00e1c lo\u1ea1i xe c\u0169 n\u00e1t, \u0111\u1ed9ng c\u01a1 k\u00eau to v\u00e0 x\u1ea3 nhi\u1ec1u kh\u00f3i \u0111\u01b0\u1ee3c l\u01b0u h\u00e0nh); kh\u00f4ng cho d\u00f9ng c\u00e1c loa ph\u00e1t thanh c\u00f4ng su\u1ea5t l\u1edbn \u0111\u1ec3 th\u00f4ng tin tr\u00ean \u0111\u01b0\u1eddng ph\u1ed1; h\u1ea1n ch\u1ebf nh\u1eefng ti\u1ebfng \u1ed3n ph\u00e1t ra t\u1eeb c\u00e1c nh\u00e0 h\u00e0ng, v\u0169 tr\u01b0\u1eddng\u2026 nh\u1ea5t l\u00e0 v\u1ec1 ban \u0111\u00eam\u2026<\/p>\n

    \"\"<\/p>\n

    V\u1ec1 ph\u00f2ng ng\u1eeba cho t\u1eebng c\u00e1 nh\u00e2n, c\u00f3 th\u1ec3 \u0111\u1ed9i m\u0169 ch\u1ed1ng \u1ed3n khi l\u00e0m vi\u1ec7c \u1edf c\u00e1c c\u00f4ng tr\u00ecnh x\u00e2y d\u1ef1ng, \u1edf s\u00e2n bay hay khi \u0111\u1ed1n c\u00e2y trong r\u1eebng.<\/p>\n

    M\u1ed7i gia \u0111\u00ecnh, kh\u00f4ng n\u00ean v\u1eb7n TV to, kh\u00f4ng nghe nh\u1ea1c m\u1edf to su\u1ed1t ng\u00e0y, \u0111i\u1ec1u ch\u1ec9nh chu\u00f4ng \u0111i\u1ec7n tho\u1ea1i, tr\u00e1nh n\u01a1i \u1ed3n (v\u0169 tr\u01b0\u1eddng, karaok\u00e9, festival nh\u1ea1c, h\u1ed9i ch\u1ee3).<\/p>\n

    \u0110\u00f3ng c\u1eeda nh\u00e0,\u00a0 g\u1eafn thi\u1ebft b\u1ecb ch\u1ed1ng \u1ed3n cho nh\u00e0 c\u1eeda \u1edf c\u00e1c th\u00e0nh ph\u1ed1 (t\u01b0\u1eddng v\u00e0 c\u1eeda k\u00ednh c\u00e1ch \u1ed3n c\u0169ng nh\u01b0 t\u01b0\u1eddng v\u00e0 c\u1eeda k\u00ednh c\u00e1ch nhi\u1ec7t ch\u1eb3ng h\u1ea1n).<\/p>\n

    \u0110\u1ed1i v\u1edbi tr\u01b0\u1eddng h\u1ecdc, s\u00e2n ch\u01a1i \u1edf tr\u01b0\u1eddng r\u1ed9ng ch\u1eebng n\u00e0o t\u1ed1t ch\u1eebng \u1ea5y v\u00e0 kh\u00f4ng c\u00f3 l\u1ee3p n\u00f3c \u2013 n\u1ebfu kh\u00f4ng, c\u1ee9 nh\u01b0 \u0111\u00e0n ong v\u1ee1 t\u1ed5, c\u00e1c em h\u00f2 h\u00e9t trong s\u00e2n, bi\u1ebfn n\u01a1i n\u00e0y th\u00e0nh m\u1ed9t m\u00f4i tr\u01b0\u1eddng \u00f4 nhi\u1ec3m b\u1edfi ti\u1ebfng \u1ed3n v\u00e0 r\u1ed1t c\u1ee5c, sau gi\u1edd ch\u01a1i, c\u00e1c em m\u1ec7t \u0111u\u1ed1i, kh\u1ea3 n\u0103ng ch\u00fa \u00fd s\u1ebd k\u00e9m \u0111i m\u00e0 kh\u00f4ng hay!<\/p>\n

    \n","protected":false},"excerpt":{"rendered":"

    Ch\u00fang ta \u0111ang \u1edf th\u1eddi \u0111\u1ea1i m\u00e0 s\u1ef1 im l\u1eb7ng qu\u00fd gi\u00e1 h\u01a1n bao gi\u1edd h\u1ebft \u0110\u1ea7u ti\u00ean, ta ph\u1ea3i hi\u1ec3u th\u1ebf n\u00e0o l\u00e0 ti\u1ebfng…<\/p>\n","protected":false},"author":2,"featured_media":176,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-174","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hse"],"_links":{"self":[{"href":"https:\/\/baohotoandien.com\/blog\/wp-json\/wp\/v2\/posts\/174","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/baohotoandien.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/baohotoandien.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/baohotoandien.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/baohotoandien.com\/blog\/wp-json\/wp\/v2\/comments?post=174"}],"version-history":[{"count":0,"href":"https:\/\/baohotoandien.com\/blog\/wp-json\/wp\/v2\/posts\/174\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/baohotoandien.com\/blog\/wp-json\/wp\/v2\/media\/176"}],"wp:attachment":[{"href":"https:\/\/baohotoandien.com\/blog\/wp-json\/wp\/v2\/media?parent=174"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/baohotoandien.com\/blog\/wp-json\/wp\/v2\/categories?post=174"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/baohotoandien.com\/blog\/wp-json\/wp\/v2\/tags?post=174"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}