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6 Cards in this Set

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Notes on Digitalis
Used to treat chronic CHF or for certain rapid atrial arrhythmias such as A-Fib, A-Flutter, or SVT.
Acts by increasing the strength of cardiac contractions, thereby improving CO, and slowing conduction through the AV node.
27.84
Precautions of Digitalis
May cause toxic effects including loss of appetite, nausea, vomiting, headache, blurred vision, yellow vission, or various cardiac arrythmias. Pt's are more sensitve to calcium preparations and declines in potassium. Be careful giving diuretics or large levels of bicarb.
27.84
Nitrates
Comes in many forms from oral tablets, topical ointment, to skin patches.
Acts by decreasing the workload on the heart. Usually takes effects in 3 to 5 minutes. Causes mass vasodilation.
27.85
Notes on beta blockers
Often prescribed to relief angina.
Acts by decreasing the rate and strength of the cardiac contractions, thereby decreasing the heart's demand of oxygen.

Over time it may make drugs that work on beta receptors ineffective, like epi, albuterol, etc.
27.85
Notes on Calcium Channel blockers
Reduces angina by preventing spasm of the coronary arteries and by wakending the cardiac contractions, thus decreasing heart's oxygen demand.
Action is to block the influx of calcium into the cardiac muscle.
27.85-86
Notes on diuretics
Often prescribe to patients wiht chronic fluid overload, CHF, or HTN.
Actions is to cause the kidney to excrete more sodium and water. However potassium usually follow sodium as a side effect.

Hypokalemia put pts at risk for cardiac arrhythmias especially if they are on digitalis.
27.86