biphasic transthoracic defibrillation

bi·pha·sic trans·tho·rac·ic de·fib·ril·la·tion

(bī-fā'zik tranz'thōr-as'ik dē-fib'ri-lā'shŭn)
Transthoracic defibrillation that delivers a calibrated fixed low-energy waveform.