Nursing Medication Administration – Drug Effects

  • Medication Administration
    • Drug Effects
      • Desired effect: action for which drug is prescribed
      • Adverse effect: harmful unintended reaction
      • Toxic effect: serious adverse effect that occurs when plasma concentration of drug reaches dangerous, life threatening level.
      • Side effect: response that is unrelated to desired action of drug
      • Cumulative action: when repeated doses of the drug accumulate in body and exert greater biologic effect that the initial dose
      • Drug dependence: physical or psychological reliance on chemical agent resulting from continued use, abuse, or addiction
      • Idiosyncratic response: individual’s unique, unpredictable response
      • Paradoxical reaction: response that contrast sharply with usual, expected response
      • Tolerance: ability to endure ordinarily injurious amounts of drug or decreasing effect obtained from established dose; requires increasing dose to possibly toxic level to maintain same effect
      • Hypersensitivity: excessive allergic reaction to exogenous agent
        • Anaphylaxis: life threatening episode of bronchial constriction and edema that obstructs airway and causes generalized vasodilation, which depletes circulating blood volume; occurs when an allergen is administered to an individual who has antibodies produced by prior use of the drug
        • Uticaria: generalized pruritic skin eruptions or giant hives
        • Angioedema: fluid accumulation in periorbital, oral and respiratory tissues
        • Delayed reaction allergies: rash and fever occurring during drug therapy
      • Drugs and food my interact and alter therapeutic effect adversely
        • Antagonist/inhibiting effect: one drug diminishing the effect of another
        • Synergistic/potentiating effort: effect of two drugs is greater than either drug alone; often dose must be reduced