Video: Koj yuav suav qhov txhais hluav taws xob nruab nrab ntawm ECG li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Rau txiav txim siab qhov nruab nrab hluav taws xob los ntawm ECG , nrhiav cov hlau lead axis uas muaj biphasic (sib npaug zoo thiab tsis zoo QRS deflections - piv txwv li, tsis muaj net deflection), ces nrhiav cov hlau lead axis uas yog perpendicular (90 °) mus rau biphasic lead thiab uas muaj qhov zoo net deflection.
Ib yam li ntawd, txoj kab hluav taws xob ntawm lub plawv txiav txim siab li cas?
- Kauj Ruam 1: Txheeb xyuas lub plawv dhia.
- Kauj Ruam 2: Ntsuas cov ntu tseem ceeb.
- Kauj Ruam 3b: Xam lub tshuab hluav taws xob.
- Kauj Ruam 3c: Xam lub tshuab hluav taws xob.
- Kauj Ruam 4: Txheeb xyuas lub plawv dhia.
- Kauj Ruam 5: Tshawb xyuas P nthwv dej rau atrial o.
- Kauj Ruam 6: Tshawb xyuas QRS complexes rau ventricular hypertrophy lossis qis voltage.
Tom qab ntawd, lo lus nug yog, koj yuav pom qhov sib txawv ntawm lub axis ntawm ECG li cas? Kom paub qhov txawv qhov qub ntawm sab laug axis sib txawv hauv qhov chaw no, saib cov hlau lead II. Yog tias cov hlau lead II nqis qis (tsis zoo), tom qab ntawd axis yog ntau dua rau -120, thiab sab laug axis sib txawv yog tam sim no. Yog tias QRS complex hauv lead II yog upright (zoo), ces tus axis yog ntau dua rau +60 degrees, thiab QRS axis yog li qub.
Ib qho ntxiv, lub axis txhais li cas hauv ECG?
Cov hluav taws xob axis ntawm lub plawv (lub plawv axis ) Txawm hais tias feem ntau tsis quav ntsej, kev tshuaj xyuas hluav taws xob axis yog ib feem tseem ceeb ntawm ECG kev txhais lus Cov hluav taws xob axis qhia txog qhov nruab nrab cov kev taw qhia ntawm ventricular depolarization thaum lub sij hawm ventricular contraction.
Dab tsi yog lub ntsiab txhais hluav taws xob?
Cov txhais hluav taws xob yog qhov nruab nrab ntawm tag nrho cov instantaneous txhais hluav taws xob vectors tshwm sim ua ntu zus thaum depolarization ntawm lub ventricles. Daim duab mus rau sab xis piav qhia qhov sib lawv liag ntawm depolarization hauv lub ventricles.
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