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pharm test 3
pharm positive inotropic agents ch. 21
| Question | Answer |
|---|---|
| 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
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