Drug Therapy Flashcards
What does the drug baclofen do?
It reduces spasticity (used in MND)
What does the drug herapin do?
Reduces risk of deep vein thrombosis
What are the 5 stages of the life cycle of a drug?
- Administration
- Absorption
- Distribution
- Metabolism
- Elimination
What is administration?
How and where the drug is introduced to the body
What is absorption?
How the drug moves into the body tissue from the administration site
What is systemic absorption?
Absorption into the bloodstream
What is local absorption?
Absorption into cells/tissues adjacent to the administration site
What is distribution?
How the drug travels to the target site
What is metabolism?
How the drug is chemically altered in the body. Some drugs need to be altered before they can perform their intended action (e.g. L-dopa), others are altered after they have performed their action in order to render them inactive
What is elimination?
How the drug is removed from the body
What does parenteral mean?
Administered by injection
What is intravenous?
Into a vein
What is intramuscular?
Into a muscle
What is subcutaneous?
Beneath the skin
What is intrathecal?
Into CSF space around the spine
Where are most orally administered drugs absorbed?
In the small intestine (may begin in the mouth or stomach)
How long can an intravenous cannula be left in place
A few days