Glossary of Ag 412 Cardiac Drugs
Other Decks By This User
- What causes increased force of contraction of the heart, disturbance of rhythm and reduced beat frequency.
- Digitalis is derived from?
- foxglove plant
- What is digitalis used for?
- control of congestive heart failure
- What are the types of digitalis?
- digoxin & digitoxin
- What type of digitalis is only used for emergency? Why?
>more toxic than digoxin
- What are the side effects of digitalis?
- What are severe signs of toxicity?
- What are some considerations that should be taken with digitalis?
- >always anticipate toxicity
>digitalis is toxic to people
>metabolized in liver & excreted by kidneys
>keep in hospital if critical
>start on low dose if non-critical
- What drugs reduce the effectiveness of digitalis by enhancing its excretion?
- >barbiturates and its derivatives
- What drugs increase the likelihood of digitalis toxicity by slowing down the excretion of digitalis?
- >certain antibiotics
- What are the Class 1A anti-arrhythmic drugs?
- What are the Class 1A anti-arrhythmic drugs used for?
- >depress myocardial excitability
>ventricular and premature ventricular contractions
>wide bizarre QRS complexes
- What are the Class 1B anti-arrhytmic drugs?
- What are the Class 1B anti-arrhythmic drugs used for>
- >depress myocardial activity
>tx ventricular arrhythmias
>decreas cell automaticity (prevents depolarization)
- How is lidocaine used as an anti-arrythmic drug?
- >single bolus under cardiac arrest
>given IV than put in fluids for continuous rate infusion
- Propanolol (Indarol) is what type of drug?
- Class II beta blocker
- How does lidocaine decrease cell automaticity?
- blocks the inflow of sodium into the cell which prevents depolarization
- What are Class II beta blockers used for?
- >Tx heart disease
>slow heart rate
>lowers blood pressure
- How does a Class II beta blocker work?
- reduces the cell automaticity
- How does Propanolol reduce cell automaticity?
- blocks the receptor sites for electrical impulses
- What are the Class IV calcium channel blockers?
- Cardazen (dilatazen)
- How does the Class IV calcium channel blockers work?
- blocks entry of calcium into myocardial cells - depressing contractility and reducing automaticity
- What are the Class IV calcium channel blockers used for?
- What are the adverse effects of the anti-arryhthmic drugs?
- >increased lethargy & anorexia
>incoordination & other CNS abnormalities
>articular or ventricular standstill
- What is the clinical use of Catecholamines?
- short term managment of severe heart failure or anaphylaxis
- What are the types of Catecholamines?
Dopamine & Dobutamine
- Epinephrine is used for?
- How does epinephrine work?
- promotes movement of the heart muscle
- Dopamine and Dobutamine are used for?
- respiratory drug/stimulant
- How doe dopamine and dobutamine work?
- >increases rate & force of contraction
>increases blood pressure
- What is diuretics?
- agents that promote excretion of urine through their effects on kidney function
- What are the diuretic drugs?
- Furosemide (Lasix)
Thiazides (Diuril, Naturetin)
- What type of diuretic is Furosemide (Lasix)?
- loop diuretics
- How does Furosemide (Laxis) work?
- >inhibits reabsorption of sodium and water in the loop of Henle, leads to increased urine excretion
>increases renal blood flow - increases filtration rate & urine output
- What is Furosemide(Lasix) used for?
- relief of cardiac and pulmonary edema
- What is the duration of Furosemide (lasix)?
- 2-3 hours
- Which diuretic is seldom used in veterinary medicine?
- What is the duration of Thiazides?
- 12-24 hours
- What type of diuretic is Mannitol?
- osmotic diuretic
- What is the action of Mannitol?
- limits tubular reabsorption of water by exerting a high osmotic pressure in the kidney tubules
You must Login or Register to add cards