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pharm test 3

pharm positive inotropic agents ch. 21

QuestionAnswer
positive intotropic agents cardiac glycosides: digoxin
cardiac glycosides: mechanism of action (digoxin & digitoxin) -slows down the heart to allow it to fill up more and then has a stronger pump
phosphodiesterase inhibitors 2 agents: inamrinone & milrinone -both have adverse effects of hypotension -used for short term management of HF (given when pt. has not responded to treatment with digoxin, diuretics, or vasodilators
positive inotropic agents: nursing implications assess weight and potassium levels -weigh them 1st thing every morning wearing basically the same thing b4 they eat or drink. weight is the best indicator of fluid -b4 giving any dose count apical pulse for 1 full min
positive inotropic agents: nursing implications -avoid giving digoxin with high-fiber foods (fiber binds with digitalis) -pt's should report weight gain of 2 more more pounds in 1 day or 5 or more pounds in 1 wk (if they are gaining that much weight it is b.c of fluid and it should be reported)
digoxin serum level 0.5-2ng/mL
when teaching a pt. about the S/S of cardiac glycoside toxicity, the nurse should alert the pt. to watch for flickering lights or halos around lights
during assessment of a pt. who is receiving digoxin, the nurse monitors for findings that would indicate an increased possibility of toxicity, such as serum potassium level of 2.0 mEq/L
when monitoring a pt who is receiving an IV infusion of inamrinone, the nurse will look for which adverse effect? thrombocytopenia
a pt. is taking a beta blocker as part of treatment plan for HF. The nurse knows that the purpose of the beta blocker is to prevent stimulation of the heart by catecholamines
the nurse is assessing a pt. who is receiving milrinone infusion and checks the pt's cardiac rhythm on the heart monitor. what adverse cardiac effect is most likely to occur in a pt. who is receiving IV milrinone? ventricular dysrhythmia
the nurse is administering an IV infusion of phosphodiesterase inhibitor to a pt. who has heart failure. the nurse will evaluate the pt. for which therapeutic effects? -positive chronotropic effects -vasodilation -positive intotropic effects
Created by: lissy11