1. Limb coj
Xws li tus qauv limb leads I, II, thiab III thiab compression unipolar limb leads aVR, aVL, thiab aVF.
(1) Tus qauv limb lead: tseem hu ua bipolar lead, uas qhia txog qhov sib txawv ntawm ob ceg ceg.
(2) Pressurized unipolar limb lead: nyob rau hauv ob lub electrodes, tsuas yog ib tug electrode qhia tau hais tias muaj peev xwm, thiab lub peev xwm ntawm lwm electrode yog sib npaug zos rau xoom.Nyob rau lub sijhawm no, lub amplitude ntawm lub waveform tsim yog me me, yog li siv lub siab los ua kom lub peev xwm ntsuas tau yooj yim.
(3) Thaum taug qab ECG kev kho mob, muaj 4 xim ntawm lub limb lead sojntsuam electrodes, thiab lawv qhov chaw tso kawm yog: cov electrode liab nyob rau ntawm dab teg ntawm sab xis sab sauv, lub daj electrode nyob rau ntawm dab teg ntawm sab laug sab sauv. limb, thiab ntsuab electrode yog nyob ntawm ko taw thiab pob taws ntawm sab laug sab ceg.Cov electrode dub yog nyob ntawm pob taws ntawm sab xis sab xis.
2. Lub hauv siab coj
Nws yog cov hlau lead unipolar, suav nrog ua V1 rau V6.Thaum kuaj, qhov zoo electrode yuav tsum tau muab tso rau ntawm qhov tshwj xeeb ntawm lub hauv siab phab ntsa, thiab 3 electrodes ntawm lub limb lead yuav tsum tau txuas nrog rau qhov tsis zoo electrode los ntawm 5 K resistor los tsim lub hauv paus hluav taws xob davhlau ya nyob twg.
Thaum lub sij hawm niaj hnub tshuaj ntsuam xyuas ECG, 12 coj ntawm kev puas siab puas ntsws bipolar, siab unipolar limb leads thiab V1～V6 tuaj yeem ua tau raws li qhov xav tau.Yog tias dextrocardia, txoj cai ventricular hypertrophy, lossis myocardial infarction yog xav tias yuav tsum tau ntxiv V7, V8, V9, thiab V3R.V7 yog nyob rau theem ntawm V4 ntawm sab laug posterior axillary kab;V8 yog nyob rau theem ntawm V4 ntawm sab laug scapular kab;V9 yog nyob rau sab laug qaum kab V4 yog nyob rau theem;V3R yog ntawm qhov sib txuas ntawm V3 ntawm sab xis hauv siab.
Saib xyuas qhov tseem ceeb
1. Kev soj ntsuam 12-txheej txheem tuaj yeem cuam tshuam cov xwm txheej myocardial ischemia hauv lub sijhawm.70% mus rau 90% ntawm myocardial ischemia yog kuaj pom los ntawm electrocardiogram, thiab hauv kev kho mob, nws feem ntau asymptomatic.
2. Rau cov neeg mob uas muaj kev pheej hmoo ntawm myocardial ischemia, xws li tsis ruaj tsis khov angina thiab myocardial infarction, 12-lead ST-segment nruam ECG xyuas tuaj yeem kuaj pom cov xwm txheej mob myocardial ischemia tam sim, tshwj xeeb tshaj yog cov xwm txheej asymptomatic myocardial ischemia, uas yog qhov chaw kho mob muab kev ntseeg siab rau kev kuaj mob raws sij hawm. thiab kev kho mob.
3. Nws yog ib qho nyuaj kom paub qhov txawv ntawm ventricular tachycardia thiab supraventricular tachycardia nrog intraventricular sib txawv conduction siv lead ua II.Qhov zoo tshaj plaws ua kom paub qhov txawv ntawm ob yog V thiab MCL (p yoj thiab QRS complex muaj qhov pom tseeb tshaj plaws).
4. Thaum ntsuam xyuas lub plawv dhia tsis zoo, siv ntau lub taub hau yog qhov tseeb dua li siv ib qho txhuas txhuas.
5. Lub 12-txoj kev soj ntsuam xyuas yog qhov tseeb dua thiab raws sijhawm kom paub seb tus neeg mob puas muaj arrhythmia ntau dua li cov txheej txheem ib leeg-txheej txheem kev soj ntsuam, nrog rau hom arrhythmia, pib tus nqi, qhov tsos, lub sijhawm, thiab kev hloov ua ntej thiab tom qab. tshuaj kho mob.
6. Kev soj ntsuam 12-txheej txheem ECG tsis tu ncua yog qhov tseem ceeb heev rau kev txiav txim siab qhov xwm txheej ntawm arrhythmia, xaiv cov kev kuaj mob thiab kev kho mob, thiab saib xyuas cov teebmeem ntawm kev kho mob.
7. Lub 12-txoj kev saib xyuas tseem muaj nws cov kev txwv hauv kev siv tshuaj kho mob, thiab muaj kev cuam tshuam rau kev cuam tshuam.Thaum tus neeg mob lub cev txoj hauj lwm hloov pauv los yog siv cov electrodes rau ib lub sij hawm, ntau qhov cuam tshuam tsis zoo yuav tshwm sim ntawm qhov screen, uas yuav cuam tshuam rau kev txiav txim thiab kev tsom xam ntawm electrocardiogram.
Post lub sij hawm: Oct-12-2021