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Gerontology - Principles of Drug Action
Gero 3
19
Health Care
Undergraduate 2
01/23/2010

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Cards

Term
principles of drug action
Definition

  • absorption
  • distribution
  • metabolism
  • excretion

Term
pharmacodynamics
Definition
how the drug works in the body physiologically and biochemically
Term
pharmacokinetics
Definition
process by which a drug moves through the body and eventually is eliminated
Term
effect and effectiveness of a drug depends on...
Definition
absorption: process by which medications enter the blood stream
Term
absorption depends on..
Definition

 

  • route of administration
  • drug solubility (sustained - release)
  • site of administration
  • acid base environment of body fluids

 

Term
distribution
Definition

  • delivery to target cells
  • effectiveness depends on the concentration of the medication at the reactive site. (ex - fat cells and insulin): some medications are bound to plasma proteins and decrease the amount available, depends on circulation, some medications have affinity for certain tissue --> iodine

Term
metabolism
Definition

  • drugs must be deactivated for excretion
  • this is biotransformation or metabolism
  • takes place mainly in the liver, but also occurs in kidneys, blood, intestinal mucosa and lungs

Term
therapeutic effects
Definition

  • the desired and intended effects of the medications vary with
    • nature of meds
    • length of time taking the meds
    • clients physical condition
    • interactions with other meds

Term
side (adverse) effects
Definition

  • effects other than primary therapeutic effects
  • some side effects are essentially harmless
  • others are potentially harmful - ex: stop antibiotic if get rash

Term
types of side effects
Definition

  • secondary effect of medication
  • toxicity
  • cumulative effects
  • individual client sensitivity: allergic reaction
  • idiosyncratic reactions
  • drug interactions

Term
factors affecting drug action
Definition

  • age
  • weight and height
  • gender
  • genetic factors
  • time of administration
  • organ system function
  • psychological state

Term
assessment
Definition

  • medication history
  • allergies
  • medical history

Term
before medication administration, assess..
Definition

  • medical record
  • diet and fluid orders
  • laboratory values
  • physical assessment - swallowing, GI motility, muscle mass, vital signs, body system assessment
  • knowledge and compliance

Term
administering medications using the 5 Rights
Definition

  1. right client
  2. right medication
  3. right dose
  4. right time
  5. right route

Term
documentation
Definition

  • immediately after medication is given
  • include time, route, dosage, and site of administration
  • nurse's initial and signature
  • special documentation if medication is not given
  • heparin and insulin have separate flow sheets
  • document therapeutic and side effects
  • if a medication error, fill out an incident report

Term
routes of administration - orally
Definition

  • simples and easiest
  • decreased patient discomfort
  • decreased side effects and less expensive

Term
forms of medications
Definition

  • pill
  • liquid
  • patch
  • suppository
  • subcutaneous
  • cream
  • inhaler

Term
systems of medication distribution
Definition

  • stock supply
  • unit dose
  • self administered supply: PCA and home care

Term
med cards
Definition

  • chemical name
  • generic name
  • classification
  • action of drug
  • indication: why taking
  • side effects
  • nurse interventions: assessments while on meds, patient education

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