cardiovascular system drug pathway antiarrhythmic drug pathway 2015-12-08T14:42:44Z PW:0002336 The pharmacokinetics and pharmacodynamics pathway of drugs used in the treatment of arrythmias. Some beta receptor and channel blockers may also act as antiarrhythmic agents. Genetic variations can result in changes in drug availability and can cause differences in the response of the organism to the drug. pathway vpetri