Anti Arrhythmic Drugs
BP 503 Pharmacology II
, Learning Outcomes
• At the end of the this session student should be
able to:
• Define the term arrhythmia and their types.
• Understand and describe the different phases o
cardio electrophysiology.
• Classification of Anti-arrythmic drugs.
• Discuss the mechanism of action of anti
arrhythmic drugs and their side effects.
, Arrhythmia
• Arrhythmia - irregular heart beat due to irregular heart rhythm.
• Disorganised Electrical discharge Abnormalities in impulse
conduction.
• # 1 unidirectional block, the impulse may only be conducted
down pathway.
• #2 is in the forward direction only, the impulse may travel in a
retrograde fashion through pathway #2 and reenter the point
of bifurcation.
• This short-circuit pathway results in re-excitation of the
ventricular muscle, causing premature contraction or
sustained ventricular arrhythmia.
BP 503 Pharmacology II
, Learning Outcomes
• At the end of the this session student should be
able to:
• Define the term arrhythmia and their types.
• Understand and describe the different phases o
cardio electrophysiology.
• Classification of Anti-arrythmic drugs.
• Discuss the mechanism of action of anti
arrhythmic drugs and their side effects.
, Arrhythmia
• Arrhythmia - irregular heart beat due to irregular heart rhythm.
• Disorganised Electrical discharge Abnormalities in impulse
conduction.
• # 1 unidirectional block, the impulse may only be conducted
down pathway.
• #2 is in the forward direction only, the impulse may travel in a
retrograde fashion through pathway #2 and reenter the point
of bifurcation.
• This short-circuit pathway results in re-excitation of the
ventricular muscle, causing premature contraction or
sustained ventricular arrhythmia.
