Video: Cov plaub fab sawv cev dab tsi ntawm daim ntawv ECG?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
ECG ntawv yog daim phiaj uas ntsuas lub sijhawm raws kab rov tav. Txhua lub xwmfab me yog 1 hli ntev thiab sawv cev 0.04 vib nas this. Txhua square loj yog 5 mm nyob rau hauv ntev thiab sawv cev 0.2 s vib nas this.
Ib yam li ntawd, koj yuav nug, lub thawv ntawv ntawm ECG ntawv txhais li cas?
Cov ECG ntawv ceev yog ib txwm 25 mm/sec. Yog li ntawd, txhua 1 hli (me me) kab rov tav lub thawv sib raug rau 0.04 thib ob (40 ms), nrog rau cov kab hnyav ua kom loj dua thawv uas suav nrog tsib qhov me me thawv thiab li no sawv cev 0.20 sec (200 ms) ncua sijhawm.
Qhov thib ob, txoj cai 300 rau ECG yog dab tsi? Cov 300 Method : Suav cov naj npawb ntawm cov thawv loj nruab nrab ntawm 2 qhov ua tiav R nthwv dej thiab faib los ntawm 300 kom tau lub plawv dhia. 4. 1500 Nws Txoj kev : Suav tus naj npawb ntawm lub thawv me me ntawm ob txoj kev sib txuas ua ke R thiab faib tus lej no mus rau 1500 kom tau txais lub plawv dhia.
Qhov thib ob, P QRS thiab T waves sawv cev li cas?
Atrial thiab ventricular depolarization thiab repolarization yog sawv cev ntawm ECG raws li ib tug series ntawm nthwv dej : cov P yoj ua raws li cov QRS complex thiab T wave . Thawj deflection yog tus P yoj cuam tshuam nrog txoj cai thiab sab laug atrial depolarization. Qhov thib ob yoj yog QRS nyuaj.
Dab tsi yog qhov PRT ib txwm muaj?
Qub Axis = QRS axis ntawm -30 ° thiab + 90 °. Sab laug Qag Deviation = QRS axis tsawg dua -30 °. Txoj cai Qag Deviation = QRS axis ntau tshaj +90 °. Heev Qag Deviation = QRS axis ntawm -90 ° thiab 180 ° (AKA Northwest Qag ”).
Pom zoo:
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