Systolic ntshav siab = (hnub nyoog × 2) + 80 (mmHg)
Diastolic ntshav siab=2/3 systolic ntshav siab
Pediatric sphygmomanometer systolic ntshav siab ntau dua lossis qis dua tus qauv no 20mmHg tau suav tias yog mob ntshav siab lossis mob ntshav siab.
Feem ntau, systolic ntshav siab qis dua 75 ～ 80mmHg yog qhov ntsuas ntshav siab, thiab cov neeg ntshav qis dua, ntshav qis dua.
Raws li kev xwm txheej ib txwm muaj, cov ntshav siab ntawm lub nqaj qis yog 20mmHg siab dua qhov ntawm lub nqua.
