Such as whole more class I personally antiarrhythmic agencies, quinidex primarily works by blocking a convenient inbound sodium current (I_Na). Quinidine's result in We_Na is referred to as the utilize dependent prevent. This means that at higher pulse rate, a prevent increases, when at moo pulse rate a prevent lessens. A consequence of blocking a convenient inbound na todays is a causal agent of the phase 0 depolarisation of the cardiac action potential to decrease (decreased V_{liquid ecstasy}).

Quinidine besides jams a slowly inactivating tetrodoxin-sensitive Na current, the slow inbound calcium current (I_Ca), a rapid (I personally_Kr) & slow (We_Ks) components of a delayed k rectifier todays, the inbound atomic number 19 rectifier todays (I personally_KI), a ATP-sensitive atomic number 19 channel (We_KATP) & I personally_to.

A symptom of quinidex on a ion trend lines is to prolong a cardiac action likely, thereby prolonging the QT interval on the skin-deep EKG.

A half life of unwritten quinora is 6 to 8 hours, & these are eliminated per cytochrome P450 system in the liver. Just about 20 percent is excreted unchanged via a kidneys.