Forgoros Anti-Arrythmic Drugs Questions and Correct Answers the Latest Update
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Forgoros Anti-Arrythmic Drugs
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Forgoros Anti-Arrythmic Drugs
disopyramide therapeutic uses and electrophysiologic effects
Class 1A
uses: similar to quinidine (treat AFl, AF, reentrant SVTs, VT)
use is limited by negative inotropic potential and strong anticholinergic
propertiesterm-91
EP effects: blocks NA+ channel and slows depolarization, block...
Forgoros Anti-Arrythmic Drugs
Questions and Correct Answers the
Latest Update
disopyramide therapeutic uses and electrophysiologic effects
✓ Class 1A
✓ uses: similar to quinidine (treat AFl, AF, reentrant SVTs, VT)
✓ use is limited by negative inotropic potential and strong anticholinergic
propertiesterm-91
✓
✓ EP effects: blocks NA+ channel and slows depolarization, blocks K+ channel to
prolong refractory period
✓
✓ comments: similar to quinidine (may suppress automaticity of purkinje fibers or
cause torsades de pointes) but causes fewer GI side effects
✓ dry mouth, eyes, and throat, urinary difficulty, urinary retention
Class 1a antiarrythmic drugs (the names of them)
✓ quinidine, procainamide, disopyramide
Class 1b antiarrythmic drugs (the names of them)
✓ lidocaine, mexiletine, phenytoin
Class 1 antiarrythmic drugs (explanation)
✓ have effect on the rapid sodium channel
✓ classified into 1a, 1b, 1c
Examify | Smart Grades | Latest update
✓ (like all class 1a)
✓ AF/AFl ++
✓ AVNRT +
✓ AVRT +
✓ PVCs ++
✓ VT/VF ++
major concern with all 1a drugs
✓ proarrhythmic
✓ early after depolarizations due to increased refractory periods that causes torsades
de pointes
✓ also any drug that alters conduction velocity can exacerbate reentrant arrythmias
any drug that alters conduction velocity can do what?
✓ exacerbate reentrant arrythmias
procainamide effect on conduction velocity
✓ (like all class 1a)
✓ decrease ++
procainamide effect on refractory period
Examify | Smart Grades | Latest update
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