1. Drug action, nursing process, medication safety Flashcards
Drug actions, education, safety, and administration.
Pharmacokinetic Phase
The process of drug movement to achieve an action in the body.
- absorption: the movement of particles from the GI tract into body fluids
- distribution: process of drug becoming available to the fluid and tissues
- metabolism: process in the liver to inactivate OR activate drug
- excretion: elimination of drug primarily through the kidneys
Nursing Process
- Assessment: the collection of data from the patient; both subjective and objective
- Diagnosis: formed using data obtained
- Planning: process of goal setting for expected outcomes
- Evaluation attainment of goals through teaching
Pharmacodynamic Phase
The study of concentration and effects of drugs on the body
Pharmaceutic Phase
When a drug becomes a solution in the body so that it can cross the biologic membrane
- Disintegration: drug breaks into smaller particles
- Dissolution: drug dissolves into even smaller particles in GI fluid before absorption
Nurses’ Six Rights
- Right to a complete and clear order
- Right to have the correct drug, route (form), and dose dispensed
- Right to access to information
- Right to policies to guide safe medication administration
- Right to administer medications safely and to identify system problems
- Right to stop, think, and be vigilant when administering medications
Five (plus one) Rights of Drug Administration
- Right patient
- Right drug
- Right dose
- Right route
- Right time
- Right documentation
Five Additional Rights of Drug Administration
- Right documentation
- Right assessment (data prior to administration of drug)
- Patients’ right to education
- Right evaluation
- Right for patient to refuse drug
Components of a drug order
- Date and time order written
- Drug name
- Drug dosage
- Route of administration
- Frequency and duration of administration
- Special instruction for withholding or adjusting dosage based on assessment, drug efficacy, or lab results
- Physician signature
Drug routes
- Oral
- Sublingual
- Buccal
- Inhalation
- Instillation (nose, eye, ear)
- Suppository
- Parenteral
Factors that modify a drug response
- Absorption
i. e. GI disturbances; vomiting disrupt - Distribution
i. e. protein binding factors, lipid vs. water solubility, etc. - Metabolism
i. e. changes in liver/kidney function - Excretion
i. e changes in kidney function - Age
- Body weight
- Toxicity
- Pharmacogenetics
- Route of administration
- Tolerance
- Cumulative effect
- Drug-drug interaction
- Drug-food interaction
Categories of drug ACTION
- Stimulation or Depression of cell activity
- Replacement
- Inhibition or death of organisms interfering with bacterial cell growth
- Irritation as mechanism to increase or decrease cell activity
Therapeutic index
Estimate of the margin of safety a drug will have. Ratio of effective dose to lethal dose. The closer to 1, the greater the danger.
Low therapeutic index
Narrow margin of safety of drug
High therapeutic index
Wide margin of safety of drug