Definitions
Rapid heart beat
Tachycardia
Positive inotropes have what affect on the heart?
Increase strength of contraction
What are two effects of inodilator drugs?
Positive inotrope (increase heart contraction)
Vasodilator / Negative chronotrope
What effects do arrhythmias have on cardiac output?
Decrease it
Which beta blocker is used to treat tachycardia associated with hyperthyroidism in cats?
Propanolol
Slow heart rate
Bradycardia
This group of drugs are called cardiac:
Glycosides
What is the name of the inodilator used in dogs only?
Pimobendan
What is the drug of choice for atrial fibrillation?
Quinidine
Atenolol is a preferred drug for:
Hypertrophic cardiomyopathy (HCM)
Drug affects heart rate
Chronotropic
What is a common example of a positive inotrope?
Digoxin and digitoxin
What is the relationship between administration of pimobendan and eating?
Administer 1 hour before feeding
What is a Class 1A antitachyarrhthmic that is used in the treatment of PVCs and ventricular tachycardia, and is often given orally at home.?
Procainamide
What drug is an example of a calcium-channel blocker?
Verapamil
Diltiazem
Drug affects heart contractility
Inotropic
What is a good clinical indicator of toxicity?
Vomiting (also diarrhea, anoexia, muscle weakness, depression and disorientation)
When do we use pimobendan?
In congestive heart failure
(Secondary to dilated cardiomyopathy or chronic mitral valve insufficiency)
What is the Class 1B drug that is used for PCVs and ventricular tachyarrhythmias, but is not FDA approved for this use?
Lidocaine
Calcium channel blockers should not used in dogs with which gene mutation?
MDR1
Amount of blood pumped each minute
Cardiac output
The dosage of these drugs should be decreased in what dogs?
Obese, large and older
What are two catecholamines that have positive inodilator effects (e.g. increase the strength of contraction in a weakened heart)?
Norepinephrine
Epinephrine
Dopanine
Dobutamine
_____blockers are Class II anthiarrhythmic drugs that affect the sympathetic nervous system receptors in the heart.
Beta
Calcium channel blockers are used to treat what problem in dogs and cats?
Subraventricular tachycardias