{"id":493920,"date":"2025-09-29T07:51:17","date_gmt":"2025-09-29T00:51:17","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=493920"},"modified":"2025-09-29T07:51:17","modified_gmt":"2025-09-29T00:51:17","slug":"mmhg","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/mmhg\/","title":{"rendered":"\u0110\u01a1n v\u1ecb mmHg l\u00e0 g\u00ec? C\u00e1ch \u0111\u1ed5i 1mmHg \u0111\u01a1n v\u1ecb sang c\u00e1c h\u1ec7 kh\u00e1c"},"content":{"rendered":"

Khi nh\u1eafc \u0111\u1ebfn c\u00e1c \u0111\u01a1n v\u1ecb \u0111o \u00e1p su\u1ea5t, b\u00ean c\u1ea1nh Pascal hay Bar, <\/span>mmHg <\/b>l\u1ea1i \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u01a1n v\u1ecb ph\u1ed5 bi\u1ebfn v\u00e0 g\u1eafn li\u1ec1n v\u1edbi th\u1ef1c t\u1ebf nh\u1ea5t. \u0110\u1eb7c bi\u1ec7t, trong y h\u1ecdc, \u0111\u01a1n v\u1ecb milimet th\u1ee7y ng\u00e2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 \u0111o huy\u1ebft \u00e1p, h\u1ed7 tr\u1ee3 vi\u1ec7c theo d\u00f5i t\u00ecnh tr\u1ea1ng tim m\u1ea1ch v\u00e0 s\u1ee9c kh\u1ecfe t\u1ed5ng th\u1ec3. V\u1eady milimet c\u1ed9t th\u1ee7y ng\u00e2n th\u1ef1c ch\u1ea5t l\u00e0 g\u00ec, mang \u00fd ngh\u0129a ra sao v\u00e0 \u0111\u01b0\u1ee3c quy \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o? Trong b\u00e0i vi\u1ebft sau, Ho\u00e0ng H\u00e0 Mobile<\/a><\/strong> s\u1ebd mang \u0111\u1ebfn cho b\u1ea1n c\u00e1i nh\u00ecn chi ti\u1ebft, \u0111\u1ea7y \u0111\u1ee7 v\u00e0 d\u1ec5 hi\u1ec3u nh\u1ea5t.<\/span><\/p>\n

\u0110\u01a1n v\u1ecb mmHg l\u00e0 g\u00ec?<\/span><\/h2>\n

Trong l\u0129nh v\u1ef1c khoa h\u1ecdc v\u00e0 \u0111\u1eddi s\u1ed1ng, c\u00f3 r\u1ea5t nhi\u1ec1u \u0111\u01a1n v\u1ecb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o \u00e1p su\u1ea5t, trong \u0111\u00f3 milimet th\u1ee7y ng\u00e2n l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb quen thu\u1ed9c. Thu\u1eadt ng\u1eef n\u00e0y xu\u1ea5t ph\u00e1t t\u1eeb nguy\u00ean l\u00fd \u00e1p k\u1ebf th\u1ee7y ng\u00e2n, n\u01a1i \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh d\u1ef1a tr\u00ean chi\u1ec1u cao c\u1ed9t th\u1ee7y ng\u00e2n b\u1ecb n\u00e2ng l\u00ean trong \u1ed1ng th\u1ee7y tinh khi c\u00f3 t\u00e1c \u0111\u1ed9ng t\u1eeb \u00e1p su\u1ea5t b\u00ean ngo\u00e0i. M\u1eb7c d\u00f9 kh\u00f4ng thu\u1ed9c h\u1ec7 \u0111o l\u01b0\u1eddng qu\u1ed1c t\u1ebf SI, \u0111\u01a1n v\u1ecb milimet c\u1ed9t th\u1ee7y ng\u00e2n v\u1eabn gi\u1eef vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u ng\u00e0nh ngh\u1ec1, \u0111\u1eb7c bi\u1ec7t l\u00e0 y h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt.<\/span><\/p>\n

\"mmHg-1\"<\/p>\n

Ngo\u00e0i ra, milimet th\u1ee7y ng\u00e2n c\u0169ng xu\u1ea5t hi\u1ec7n trong c\u00e1c ph\u00e9p \u0111o li\u00ean quan \u0111\u1ebfn \u00e1p l\u1ef1c d\u1ecbch trong c\u01a1 th\u1ec3, \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed trong h\u00e0ng kh\u00f4ng ho\u1eb7c kh\u00ed t\u01b0\u1ee3ng. \u0110i\u1ec3m \u0111\u00e1ng ch\u00fa \u00fd l\u00e0 milimet c\u1ed9t th\u1ee7y ng\u00e2n c\u00f3 gi\u00e1 tr\u1ecb quy \u0111\u1ed5i kh\u00e1 thu\u1eadn ti\u1ec7n, khi 1 milimet th\u1ee7y ng\u00e2n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng 133,322 Pa.<\/span><\/p>\n

S\u1ef1 t\u1ed3n t\u1ea1i l\u00e2u d\u00e0i c\u1ee7a \u0111\u01a1n v\u1ecb milimet th\u1ee7y ng\u00e2n ch\u1ee9ng minh r\u1eb1ng, d\u00f9 kh\u00f4ng c\u00f2n l\u00e0 \u0111\u01a1n v\u1ecb ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf, n\u00f3 v\u1eabn \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 s\u1ef1 ph\u1ed5 bi\u1ebfn. Trong th\u1ef1c t\u1ebf, nhi\u1ec1u thi\u1ebft b\u1ecb \u0111o \u00e1p su\u1ea5t, m\u00e1y \u0111o huy\u1ebft \u00e1p hay c\u00e1c t\u00e0i li\u1ec7u y khoa v\u1eabn gi\u1eef milimet c\u1ed9t th\u1ee7y ng\u00e2n nh\u01b0 \u0111\u01a1n v\u1ecb ch\u00ednh th\u1ee9c.<\/span><\/p>\n

C\u00e1ch \u0111\u1ed5i 1 mmHg sang c\u00e1c h\u1ec7 kh\u00e1c<\/span><\/h2>\n

Khi t\u00ecm hi\u1ec3u v\u1ec1 \u0111\u01a1n v\u1ecb n\u00e0y, nhi\u1ec1u ng\u01b0\u1eddi th\u01b0\u1eddng b\u0103n kho\u0103n l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 quy \u0111\u1ed5i ch\u00ednh x\u00e1c sang c\u00e1c h\u1ec7 \u0111o l\u01b0\u1eddng kh\u00e1c nhau. Vi\u1ec7c n\u1eafm r\u00f5 c\u00e1ch \u0111\u1ed5i 1 milimet th\u1ee7y ng\u00e2ns\u1ebd gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng \u00e1p d\u1ee5ng trong y h\u1ecdc, k\u1ef9 thu\u1eadt c\u0169ng nh\u01b0 c\u00e1c l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u khoa h\u1ecdc.<\/span><\/p>\n

H\u1ec7 m\u00e9t<\/span><\/h3>\n

Trong h\u1ec7 \u0111o l\u01b0\u1eddng m\u00e9t, milimet th\u1ee7y ng\u00e2n th\u01b0\u1eddng \u0111\u01b0\u1ee3c quy \u0111\u1ed5i sang \u0111\u01a1n v\u1ecb Pascal (Pa), Kilopascal (kPa) ho\u1eb7c Megapascal (MPa). \u0110\u00e2y l\u00e0 c\u00e1c \u0111\u01a1n v\u1ecb thu\u1ed9c h\u1ec7 SI, \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng r\u1ed9ng r\u00e3i trong v\u1eadt l\u00fd v\u00e0 k\u1ef9 thu\u1eadt. Theo gi\u00e1 tr\u1ecb chu\u1ea9n, 1 milimet c\u1ed9t th\u1ee7y ng\u00e2n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 133,32 Pa. N\u1ebfu quy \u0111\u1ed5i sang kPa, ta c\u00f3 1 \u0111\u01a1n v\u1ecb \u2248 0,133 kPa, c\u00f2n v\u1edbi MPa, gi\u00e1 tr\u1ecb s\u1ebd nh\u1ecf h\u01a1n nhi\u1ec1u, kho\u1ea3ng 1,33 \u00d7 10\u207b\u2074 MPa.<\/span><\/p>\n

\"mmHg-2\"<\/p>\n

Ngo\u00e0i Pascal, <\/span>mmHg<\/b> c\u00f2n c\u00f3 th\u1ec3 \u0111\u1ed5i sang Bar. \u1ede m\u1ee9c n\u00e0y, 1 milimet c\u1ed9t th\u1ee7y ng\u00e2n t\u01b0\u01a1ng \u1ee9ng 1,33 \u00d7 10\u207b\u00b3 Bar. \u0110\u00e2y l\u00e0 t\u1ef7 l\u1ec7 thu\u1eadn ti\u1ec7n khi s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111o \u00e1p l\u1ef1c kh\u00ed hay ch\u1ea5t l\u1ecfng. \u0110\u1ed3ng th\u1eddi, trong l\u0129nh v\u1ef1c c\u01a1 kh\u00ed v\u00e0 k\u1ef9 thu\u1eadt \u00e1p su\u1ea5t, \u0111\u01a1n v\u1ecb n\u00e0y c\u00f2n \u0111\u01b0\u1ee3c so s\u00e1nh v\u1edbi \u0111\u01a1n v\u1ecb kgf\/cm\u00b2. Gi\u00e1 tr\u1ecb chuy\u1ec3n \u0111\u1ed5i chu\u1ea9n x\u00e1c l\u00e0 1 milimet th\u1ee7y ng\u00e2n \u2248 1,36 \u00d7 10\u207b\u00b3 kgf\/cm\u00b2.<\/span><\/p>\n

Vi\u1ec7c quy \u0111\u1ed5i sang c\u00e1c \u0111\u01a1n v\u1ecb thu\u1ed9c h\u1ec7 m\u00e9t mang l\u1ea1i s\u1ef1 linh ho\u1ea1t cao khi \u00e1p d\u1ee5ng trong t\u00ednh to\u00e1n th\u1ef1c t\u1ebf. V\u00ed d\u1ee5, trong nghi\u00ean c\u1ee9u khoa h\u1ecdc, khi c\u1ea7n th\u1ed1ng nh\u1ea5t c\u00e1c gi\u00e1 tr\u1ecb \u0111o v\u1ec1 c\u00f9ng m\u1ed9t h\u1ec7, vi\u1ec7c quy \u0111\u1ed5i milimet c\u1ed9t th\u1ee7y ng\u00e2n sang Pascal ho\u1eb7c kPa gi\u00fap s\u1ed1 li\u1ec7u tr\u1edf n\u00ean d\u1ec5 d\u00e0ng so s\u00e1nh v\u00e0 ph\u00e2n t\u00edch h\u01a1n.<\/span><\/p>\n

H\u1ec7 \u0111o l\u01b0\u1eddng Anh\/M\u1ef9<\/span><\/h3>\n

Trong h\u1ec7 \u0111o l\u01b0\u1eddng Anh\/M\u1ef9, c\u00e1c \u0111\u01a1n v\u1ecb \u00e1p su\u1ea5t ph\u1ed5 bi\u1ebfn th\u01b0\u1eddng g\u1eb7p g\u1ed3m psi (pound per square inch), ksi (kilopound per square inch) v\u00e0 psf (pound per square foot). Khi quy \u0111\u1ed5i t\u1eeb <\/span>mmHg<\/b> sang h\u1ec7 n\u00e0y, ta c\u00f3: 1 milimet c\u1ed9t th\u1ee7y ng\u00e2n \u2248 0,02 psi, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng 2,78 psf ho\u1eb7c kho\u1ea3ng 1,93 \u00d7 10\u207b\u2075 ksi.<\/span><\/p>\n

\"mmHg-3\"<\/p>\n

M\u1eb7c d\u00f9 nh\u1eefng gi\u00e1 tr\u1ecb n\u00e0y nh\u00ecn qua c\u00f3 v\u1ebb nh\u1ecf b\u00e9, nh\u01b0ng trong th\u1ef1c t\u1ebf, ch\u00fang l\u1ea1i r\u1ea5t quan tr\u1ecdng. V\u00ed d\u1ee5, trong ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ho\u1eb7c c\u00f4ng nghi\u1ec7p d\u1ea7u kh\u00ed, c\u00e1c k\u1ef9 s\u01b0 c\u1ea7n th\u01b0\u1eddng xuy\u00ean quy \u0111\u1ed5i \u00e1p su\u1ea5t t\u1eeb \u0111\u01a1n v\u1ecb n\u00e0y trong y khoa ho\u1eb7c ph\u00f2ng th\u00ed nghi\u1ec7m sang psi \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed3ng b\u1ed9 h\u1ec7 \u0111o l\u01b0\u1eddng. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch khi l\u00e0m vi\u1ec7c v\u1edbi c\u00e1c thi\u1ebft b\u1ecb nh\u1eadp kh\u1ea9u t\u1eeb M\u1ef9, v\u1ed1n m\u1eb7c \u0111\u1ecbnh s\u1eed d\u1ee5ng h\u1ec7 \u0111o Anh\/M\u1ef9.<\/span><\/p>\n

\u0110i\u1ec3m n\u1ed5i b\u1eadt l\u00e0 psi \u0111\u01b0\u1ee3c xem nh\u01b0 m\u1ed9t \u0111\u01a1n v\u1ecb tr\u1ef1c quan h\u01a1n trong ng\u00e0nh c\u00f4ng nghi\u1ec7p c\u01a1 kh\u00ed v\u00e0 x\u00e2y d\u1ef1ng, trong khi milimet th\u1ee7y ng\u00e2n v\u1eabn gi\u1eef \u01b0u th\u1ebf trong y h\u1ecdc. Vi\u1ec7c n\u1eafm \u0111\u01b0\u1ee3c m\u1ed1i li\u00ean h\u1ec7 quy \u0111\u1ed5i gi\u00fap ng\u01b0\u1eddi s\u1eed d\u1ee5ng d\u1ec5 d\u00e0ng chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u khi c\u1ea7n b\u00e1o c\u00e1o, so s\u00e1nh ho\u1eb7c t\u00ednh to\u00e1n. Th\u1ef1c t\u1ebf, m\u1ed9t ph\u00e9p \u0111o huy\u1ebft \u00e1p 120\/80 milimet c\u1ed9t th\u1ee7y ng\u00e2n khi chuy\u1ec3n sang psi ch\u1ec9 kho\u1ea3ng 2,32\/1,55 psi, \u0111\u1ee7 \u0111\u1ec3 th\u1ea5y r\u1eb1ng \u00e1p l\u1ef1c trong c\u01a1 th\u1ec3 con ng\u01b0\u1eddi th\u1ea5p h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p.<\/span><\/p>\n

\u0110\u01a1n v\u1ecb \u00e1p su\u1ea5t<\/span><\/h3>\n

B\u00ean c\u1ea1nh c\u00e1c \u0111\u01a1n v\u1ecb quen thu\u1ed9c nh\u01b0 Pascal hay psi, <\/span>mmHg <\/b>c\u00f2n c\u00f3 m\u1ed1i li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi nhi\u1ec1u \u0111\u01a1n v\u1ecb \u00e1p su\u1ea5t kh\u00e1c, \u0111i\u1ec3n h\u00ecnh l\u00e0 atm (atmosphere \u2013 kh\u00ed quy\u1ec3n), hPa (hectopascal) v\u00e0 mbar (milibar). \u0110\u00e2y l\u00e0 nh\u1eefng \u0111\u01a1n v\u1ecb th\u01b0\u1eddng xuy\u00ean xu\u1ea5t hi\u1ec7n trong c\u00e1c t\u00e0i li\u1ec7u khoa h\u1ecdc, \u0111\u1eb7c bi\u1ec7t trong ng\u00e0nh kh\u00ed t\u01b0\u1ee3ng h\u1ecdc, v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc.\u00a0<\/span><\/p>\n

\"mmHg-4\"<\/p>\n

Theo quy \u01b0\u1edbc qu\u1ed1c t\u1ebf, 1 atm ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng 760 milimet th\u1ee7y ng\u00e2n. T\u1eeb m\u1ed1i quan h\u1ec7 n\u00e0y, ta c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng suy ra 1 milimet c\u1ed9t th\u1ee7y ng\u00e2n x\u1ea5p x\u1ec9 b\u1eb1ng 0,001315 atm. Trong khi \u0111\u00f3, n\u1ebfu quy \u0111\u1ed5i sang h\u1ec7 SI m\u1edf r\u1ed9ng, 1 \u0111\u01a1n v\u1ecb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng 1,33 hPa ho\u1eb7c 1,33 mbar. C\u00e1c con s\u1ed1 n\u00e0y tuy nh\u1ecf nh\u01b0ng l\u1ea1i v\u00f4 c\u00f9ng quan tr\u1ecdng, b\u1edfi ch\u00fang cho ph\u00e9p chuy\u1ec3n \u0111\u1ed5i nhanh ch\u00f3ng gi\u1eefa s\u1ed1 li\u1ec7u \u0111o trong y h\u1ecdc (th\u01b0\u1eddng d\u00f9ng milimet th\u1ee7y ng\u00e2n) v\u00e0 c\u00e1c s\u1ed1 li\u1ec7u trong kh\u00ed t\u01b0\u1ee3ng (th\u01b0\u1eddng d\u00f9ng hPa ho\u1eb7c mbar).<\/span><\/p>\n

Trong th\u1ef1c t\u1ebf, ng\u00e0nh kh\u00ed t\u01b0\u1ee3ng h\u1ecdc g\u1ea7n nh\u01b0 lu\u00f4n s\u1eed d\u1ee5ng hPa v\u00e0 mbar \u0111\u1ec3 m\u00f4 t\u1ea3 \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n. Khi n\u1eafm r\u00f5 r\u1eb1ng 1 milimet c\u1ed9t th\u1ee7y ng\u00e2n = 1,33 hPa, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng so s\u00e1nh c\u00e1c gi\u00e1 tr\u1ecb huy\u1ebft \u00e1p v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng t\u1ef1 nhi\u00ean. Ch\u1eb3ng h\u1ea1n, \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n trung b\u00ecnh \u1edf m\u1ef1c n\u01b0\u1edbc bi\u1ec3n \u0111\u01b0\u1ee3c ghi nh\u1eadn \u1edf m\u1ee9c 1013 hPa, t\u01b0\u01a1ng \u1ee9ng x\u1ea5p x\u1ec9 760 milimet th\u1ee7y ng\u00e2n.<\/span><\/p>\n

\u0110\u01a1n v\u1ecb th\u1ee7y ng\u00e2n<\/span><\/h3>\n

Do xu\u1ea5t ph\u00e1t t\u1eeb nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u00e1p k\u1ebf th\u1ee7y ng\u00e2n, \u0111\u01a1n v\u1ecb <\/span>mmHg <\/b>c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c quy \u0111\u1ed5i tr\u1ef1c ti\u1ebfp sang nh\u1eefng \u0111\u01a1n v\u1ecb kh\u00e1c g\u1eafn li\u1ec1n v\u1edbi chi\u1ec1u cao c\u1ed9t th\u1ee7y ng\u00e2n. C\u00e1c quy \u0111\u1ed5i n\u00e0y kh\u00e1 quen thu\u1ed9c v\u00e0 th\u01b0\u1eddng g\u1eb7p trong nhi\u1ec1u l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt.\u00a0<\/span><\/p>\n

\"mmHg-5\"<\/p>\n

Trong ng\u00e0nh h\u00e0ng kh\u00f4ng, inHg (inch th\u1ee7y ng\u00e2n) l\u00e0 \u0111\u01a1n v\u1ecb ph\u1ed5 bi\u1ebfn \u0111\u1ec3 \u0111o \u00e1p su\u1ea5t cabin v\u00e0 \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed. Khi chuy\u1ec3n \u0111\u1ed5i, 1 milimet th\u1ee7y ng\u00e2n \u2248 0,04 inHg, nh\u1edd \u0111\u00f3 c\u00e1c phi c\u00f4ng, k\u1ef9 s\u01b0 ho\u1eb7c chuy\u00ean vi\u00ean k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3 nhanh ch\u00f3ng t\u00ednh to\u00e1n, so s\u00e1nh \u00e1p su\u1ea5t cabin v\u1edbi c\u00e1c gi\u00e1 tr\u1ecb chu\u1ea9n qu\u1ed1c t\u1ebf.<\/span><\/p>\n

B\u00ean c\u1ea1nh \u0111\u00f3, Torr l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb r\u1ea5t quen thu\u1ed9c trong l\u0129nh v\u1ef1c v\u1eadt l\u00fd ch\u00e2n kh\u00f4ng. Trong c\u00e1c th\u00ed nghi\u1ec7m nghi\u00ean c\u1ee9u li\u00ean quan \u0111\u1ebfn \u00e1p su\u1ea5t c\u1ef1c th\u1ea5p, Torr \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng g\u1ea7n nh\u01b0 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi milimet c\u1ed9t th\u1ee7y ng\u00e2n. V\u00ec 1 \u0111\u01a1n v\u1ecb = 1 Torr, vi\u1ec7c quy \u0111\u1ed5i g\u1ea7n nh\u01b0 kh\u00f4ng t\u1ea1o ra s\u1ef1 kh\u00e1c bi\u1ec7t, gi\u00fap c\u00e1c nh\u00e0 khoa h\u1ecdc ti\u1ebft ki\u1ec7m th\u1eddi gian trong qu\u00e1 tr\u00ecnh t\u00ednh to\u00e1n.<\/span><\/p>\n

\u0110\u01a1n v\u1ecb n\u01b0\u1edbc<\/span><\/h3>\n

M\u1ed9t h\u01b0\u1edbng quy \u0111\u1ed5i kh\u00e1c c\u1ee7a <\/span>mmHg <\/b>l\u00e0 sang c\u00e1c \u0111\u01a1n v\u1ecb li\u00ean quan \u0111\u1ebfn chi\u1ec1u cao c\u1ed9t n\u01b0\u1edbc. Trong h\u1ec7 n\u00e0y, 1 milimet c\u1ed9t th\u1ee7y ng\u00e2n t\u01b0\u01a1ng \u1ee9ng kho\u1ea3ng 0,01 mH\u2082O, 1,36 cmH\u2082O, 0,54 inH\u2082O ho\u1eb7c 0,04 ftH\u2082O. \u0110\u00e2y l\u00e0 nh\u1eefng con s\u1ed1 h\u1eefu \u00edch trong ng\u00e0nh th\u1ee7y l\u1ef1c ho\u1eb7c k\u1ef9 thu\u1eadt li\u00ean quan \u0111\u1ebfn ch\u1ea5t l\u1ecfng.<\/span><\/p>\n

\"mmHg-6\"<\/p>\n

V\u00ed d\u1ee5, khi thi\u1ebft k\u1ebf b\u01a1m n\u01b0\u1edbc ho\u1eb7c h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng \u1ed1ng, k\u1ef9 s\u01b0 th\u01b0\u1eddng quan t\u00e2m \u0111\u1ebfn \u00e1p su\u1ea5t t\u00ednh theo mH\u2082O (m\u00e9t c\u1ed9t n\u01b0\u1edbc). Bi\u1ebft r\u1eb1ng 1 \u0111\u01a1n v\u1ecb = 0,01 mH\u2082O, ta c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng quy \u0111\u1ed5i gi\u00e1 tr\u1ecb \u00e1p su\u1ea5t t\u1eeb thi\u1ebft b\u1ecb \u0111o huy\u1ebft \u00e1p sang h\u1ec7 th\u1ed1ng \u0111o \u00e1p l\u1ef1c trong \u0111\u01b0\u1eddng \u1ed1ng n\u01b0\u1edbc. M\u1ed1i li\u00ean h\u1ec7 n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng khi t\u00ednh to\u00e1n \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u, kh\u1ea3 n\u0103ng ch\u1ecbu \u00e1p l\u1ef1c hay hi\u1ec7u su\u1ea5t b\u01a1m.<\/span><\/p>\n

Ngo\u00e0i ra, trong l\u0129nh v\u1ef1c nghi\u00ean c\u1ee9u m\u00f4i tr\u01b0\u1eddng, c\u00e1c ph\u00e9p \u0111o \u00e1p l\u1ef1c c\u1ed9t n\u01b0\u1edbc c\u0169ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng \u0111\u1ec3 t\u00ednh to\u00e1n m\u1ef1c n\u01b0\u1edbc ng\u1ea7m, \u00e1p su\u1ea5t th\u1ea9m th\u1ea5u hay s\u1ee9c \u00e9p c\u1ee7a ch\u1ea5t l\u1ecfng trong c\u00e1c th\u00ed nghi\u1ec7m. Vi\u1ec7c quy \u0111\u1ed5i milimet c\u1ed9t th\u1ee7y ng\u00e2n sang \u0111\u01a1n v\u1ecb c\u1ed9t n\u01b0\u1edbc gi\u00fap ng\u01b0\u1eddi l\u00e0m chuy\u00ean m\u00f4n c\u00f3 th\u00eam m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn tr\u1ef1c quan, d\u1ec5 h\u00ecnh dung h\u01a1n so v\u1edbi con s\u1ed1 Pascal v\u1ed1n kh\u00f4 khan.<\/span><\/p>\n

C\u00e1ch \u0111\u1ed5i \u0111\u01a1n v\u1ecb mmHg nhanh ch\u00f3ng<\/span><\/h2>\n

Trong th\u1ef1c t\u1ebf, vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i milimet th\u1ee7y ng\u00e2n sang c\u00e1c \u0111\u01a1n v\u1ecb kh\u00e1c kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o c\u00f4ng th\u1ee9c l\u00fd thuy\u1ebft m\u00e0 c\u00f2n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n nhanh ch\u00f3ng th\u00f4ng qua c\u00e1c c\u00f4ng c\u1ee5 v\u00e0 ph\u1ea7n m\u1ec1m h\u1ed7 tr\u1ee3. Ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng m\u00e1y t\u00ednh c\u1ea7m tay, \u1ee9ng d\u1ee5ng tr\u00ean \u0111i\u1ec7n tho\u1ea1i, ho\u1eb7c c\u00e1c trang web chuy\u1ec3n \u0111\u1ed5i tr\u1ef1c tuy\u1ebfn \u0111\u1ec3 ti\u1ebft ki\u1ec7m th\u1eddi gian.<\/span><\/p>\n

\"mmHg-7\"<\/p>\n

V\u00ed d\u1ee5, ch\u1ec9 c\u1ea7n nh\u1eadp gi\u00e1 tr\u1ecb milimet c\u1ed9t th\u1ee7y ng\u00e2n v\u00e0o \u00f4 chuy\u1ec3n \u0111\u1ed5i tr\u00ean m\u1ed9t \u1ee9ng d\u1ee5ng, h\u1ec7 th\u1ed1ng s\u1ebd t\u1ef1 \u0111\u1ed9ng tr\u1ea3 k\u1ebft qu\u1ea3 sang nhi\u1ec1u \u0111\u01a1n v\u1ecb kh\u00e1c nhau nh\u01b0 Pa, psi, atm, hPa hay inHg. \u0110i\u1ec1u n\u00e0y \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho sinh vi\u00ean, k\u1ef9 s\u01b0 ho\u1eb7c b\u00e1c s\u0129 khi c\u1ea7n s\u1ed1 li\u1ec7u ch\u00ednh x\u00e1c ngay l\u1eadp t\u1ee9c. Ngo\u00e0i ra, m\u1ed9t s\u1ed1 m\u00e1y \u0111o huy\u1ebft \u00e1p \u0111i\u1ec7n t\u1eed hi\u1ec7n \u0111\u1ea1i c\u0169ng t\u00edch h\u1ee3p s\u1eb5n t\u00ednh n\u0103ng hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3 \u0111\u1ed3ng th\u1eddi b\u1eb1ng nhi\u1ec1u \u0111\u01a1n v\u1ecb, gi\u00fap ng\u01b0\u1eddi d\u00f9ng thu\u1eadn ti\u1ec7n theo d\u00f5i.<\/span><\/p>\n

\u0110\u1ed1i v\u1edbi c\u00e1c ph\u00e9p t\u00ednh th\u1ee7 c\u00f4ng, vi\u1ec7c ghi nh\u1edb c\u00e1c h\u1ec7 s\u1ed1 quy \u0111\u1ed5i c\u01a1 b\u1ea3n c\u0169ng l\u00e0 c\u00e1ch l\u00e0m hi\u1ec7u qu\u1ea3. Ch\u1eb3ng h\u1ea1n, n\u1eafm v\u1eefng r\u1eb1ng 1 \u0111\u01a1n v\u1ecb milimet th\u1ee7y ng\u00e2n \u2248 133 Pa, \u2248 0,02 psi hay \u2248 0,001315 atm, ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 \u01b0\u1edbc l\u01b0\u1ee3ng nhanh m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ebfn m\u00e1y m\u00f3c. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y v\u1eeba r\u00e8n luy\u1ec7n kh\u1ea3 n\u0103ng t\u01b0 duy, v\u1eeba t\u0103ng t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd khi l\u00e0m vi\u1ec7c.<\/span><\/p>\n

L\u1eddi k\u1ebft<\/span><\/h2>\n

Qua nh\u1eefng th\u00f4ng tin tr\u00ean, c\u00f3 th\u1ec3 th\u1ea5y <\/span>mmHg <\/b>kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb \u0111o \u00e1p su\u1ea5t c\u00f3 l\u1ecbch s\u1eed l\u00e2u \u0111\u1eddi m\u00e0 c\u00f2n gi\u1eef vai tr\u00f2 quan tr\u1ecdng trong nhi\u1ec1u l\u0129nh v\u1ef1c th\u1ef1c ti\u1ec5n. D\u00f9 kh\u00f4ng thu\u1ed9c h\u1ec7 SI, \u0111\u01a1n v\u1ecb milimet th\u1ee7y ng\u00e2n v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1edd t\u00ednh tr\u1ef1c quan, d\u1ec5 quy \u0111\u1ed5i v\u00e0 g\u1eafn li\u1ec1n v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng quen thu\u1ed9c nh\u01b0 \u0111o huy\u1ebft \u00e1p, \u00e1p su\u1ea5t cabin hay nghi\u00ean c\u1ee9u ch\u00e2n kh\u00f4ng. Vi\u1ec7c n\u1eafm v\u1eefng c\u00e1c h\u1ec7 s\u1ed1 quy \u0111\u1ed5i sang Pascal, atm, psi, hPa, inHg ho\u1eb7c mH\u2082O gi\u00fap ng\u01b0\u1eddi d\u00f9ng d\u1ec5 d\u00e0ng \u00e1p d\u1ee5ng trong c\u00f4ng vi\u1ec7c, h\u1ecdc t\u1eadp c\u0169ng nh\u01b0 ch\u0103m s\u00f3c s\u1ee9c kh\u1ecfe.<\/span><\/p>\n

XEM TH\u00caM:<\/strong><\/p>\n

C\u00e1ch \u0111\u1ed5i m\u1eadt kh\u1ea9u WiFi TP-Link, Tenda, FPT, Viettel, \u2026 c\u1ef1c nhanh ch\u00f3ng<\/a><\/strong><\/p>\n

C\u00e1ch \u0111\u1ed5i h\u00ecnh n\u1ec1n m\u00e1y t\u00ednh Windows, MacBook \u0111\u01a1n gi\u1ea3n ch\u1ec9 trong 2 ph\u00fat<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Khi nh\u1eafc \u0111\u1ebfn c\u00e1c \u0111\u01a1n v\u1ecb \u0111o \u00e1p su\u1ea5t, b\u00ean c\u1ea1nh Pascal hay Bar, mmHg l\u1ea1i \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t trong nh\u1eefng \u0111\u01a1n v\u1ecb ph\u1ed5 bi\u1ebfn v\u00e0 g\u1eafn li\u1ec1n v\u1edbi th\u1ef1c t\u1ebf nh\u1ea5t. \u0110\u1eb7c bi\u1ec7t, trong y h\u1ecdc, \u0111\u01a1n v\u1ecb milimet th\u1ee7y ng\u00e2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 \u0111o huy\u1ebft \u00e1p, h\u1ed7 tr\u1ee3 vi\u1ec7c […]<\/p>\n","protected":false},"author":65,"featured_media":493922,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29235,3910],"tags":[],"class_list":["post-493920","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-goc-to-mo","category-kham-pha"],"yoast_head":"\n\u0110\u01a1n v\u1ecb mmHg l\u00e0 g\u00ec? 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