2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Peb nthwv dej ntawm QRS complex QRS complex QRS ncua sij hawm ntsuas los ntawm qhov pib ntawm Q yoj mus rau qhov kawg ntawm S yoj. Ib txwm muaj li ntawm 40 mus rau 100 milliseconds (1 lub thawv me rau 2.5 lub thawv me). Cov cuab yeej EKG niaj hnub tso cai rau EKG cov ntaub ntawv khaws cia hauv cov ntawv digital thiab khaws cia rau hauv daim ntawv nyeem tau hauv computer. https://www.ncbi.nlm.nih.gov › pmc › articles › PMC3584304
Standardization of QRS Duration Measurement and LBBBB Criteria in …
sawv cev rau ventricular depolarization.
Dab tsi sawv cev rau ventricular repolarization ntawm ECG?
Ventricular depolarization (ua kom ua haujlwm) yog piav qhia los ntawm QRS complex, whereas ventricular repolarization yog txhais los ntawm lub sijhawm los ntawm qhov pib ntawm QRS complex mus rau qhov kawg ntawm T- lossis U-wave. Nyob rau saum npoo ECG, ventricular repolarization Cheebtsam suav nrog J-wave, ST-segment, thiab T- thiab U-waves.
Dab tsi sawv cev rau kev cog lus ventricular ntawm ECG?
QRS complex yog hais txog kev sib xyaw ntawm Q, R, thiab S nthwv dej, thiab qhia txog qhov ventricular depolarization thiab contraction (ventricular systole). Q thiab S nthwv dej yog nqes qis thaum R nthwv dej, nthwv dej nce siab, yog qhov tseem ceeb tshaj plaws ntawm ECG.
P QRS thiab T yoj sawv cev dab tsi?
P yoj hauv ECG complex qhia atrial depolarization. QRS yogLub luag haujlwm rau ventricular depolarization thiab T yoj yog ventricular repolarization.
P qhia dab tsi hauv ECG?
P yoj thiab PR ntu yog ib feem tseem ceeb ntawm electrocardiogram (ECG). Nws sawv cev hluav taws xob depolarization ntawm lub atria ntawm lub plawv. Nws feem ntau yog qhov zoo me me deflection los ntawm isoelectric hauv paus uas tshwm sim ua ntej QRS complex.
Pom zoo:
Rau qhov electromagnetic yoj poynting vector yog sawv cev los ntawm?
Poynting vector S yog txhais tias yuav sib npaug rau cov khoom hla (1/μ)E × B, qhov twg μ yog qhov permeability ntawm nruab nrab los ntawm cov hluav taws xob dhau mus. (saib magnetic permeability), E yog qhov amplitude ntawm hluav taws xob teb, thiab B yog qhov amplitude ntawm magnetic teb.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Qhov twg sawv cev rau cov qauv qhia pom rau a3b9?
AB3 AB2 A3B9 A9B27 Yuav ua li cas yog tus qauv qhia pom rau c2 h6? Piv txwv ntawm cov qauv qhia pom Cov mis mos molecular ntawm ethane yog C 2 H 6 . Nws qhia txog tus naj npawb ntawm cov atoms ntawm txhua lub hauv paus ntawm ethane molecule.
Dab tsi ntawm cov hauv qab no sawv cev rau qhov zoo ntawm pob khoom?
Qhov twg hauv qab no sawv cev rau qhov zoo ntawm "pob tsev neeg?" muab kev sib yuav thiab kev ua niam ua txiv siab dua. muab lawv tus kheej nyiam ua ntej lawv cov menyuam nyiam. cuam tshuam los ntawm lub tswv yim ntawm kev mob siab rau niam.
Qhov twg hauv qab no sawv cev rau lub tswv yim ntawm tus kheej saib iav?
Lub ntsej muag-iav tus kheej piav qhia txog tus txheej txheem uas tib neeg pib lawv lub siab ntawm tus kheej ntawm qhov lawv ntseeg lwm tus saib lawv. Kev siv kev sib raug zoo raws li hom "daim iav," tib neeg siv cov kev txiav txim siab uas lawv tau txais los ntawm lwm tus los ntsuas lawv tus kheej muaj nqis, qhov tseem ceeb, thiab tus cwj pwm.
