Pharmacology Drug Chart Page 11
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18Pharmacology Drug Chart Page 11
Binds to Voltage
Shortens Action Potential
Negative Inotropic
↓ BP due to peripheral vasodilation
Gated Ca Channels
Greater effect on the heart than on vascular
to Decrease the
smooth muscle
Diltiazem
Inward Current
Treatment of Atrial Dysrhythmias
Class IV
Treatment of Reentrant Supraventricular
2+
Ca
Channel Blocker
Tachycardia
Reduction in Atrial Flutter
Treatment of Hypertension
Blocks Na/K
Shortens the refractory period in both the atria
Can cause Ectopic ventricular beats
Channels and
and the ventricles while prolonging the effective
Ventricular Tachycardia or Fibrillation
Reverses Ca/Na
refractory period and decreasing the conduction
Digoxin
Antiport to ↑
velocity
Intracellular Ca
Inhibits cAMP
Slows AV Nodal Conduction
Flushing
Dependent Ca and ↑
Treatment of Supraventricular Tachycardia
Shortness of Breath
Adenosine
K Conduction
AV Block
(Hyperpolarization)
Unknown
Treatment of Digitalis Induced Arrhythmias
2+
Mg
Treatment of Ventricular Tachycardia
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