Aspects Flashcards
(40 cards)
Pharmacology definition
characteristics and properties of drugs and their actions and effects on the body
Pharmacokinetics
effects of the body on the drug
Pharmacodynamics
effects of drugs on the body
Pharmacotherapeutics
treating or preventing diseases with drugs
Classification of Drugs
Source, Chemical formula, Mode of Action, Therapeutic use, System Acted on as well as drug schedule, popularity, cost, safety in pregnancy
Drug names
chemical name, generic name (approved name assigned by manufacturer), trade name (brand name, for marketing)
Routes of Admin
oral, topical, sublingual, IN, transdermal, rectal, vaginal, inhalation, IV, IM, IO , subcutaneous, intracethecal, epidural, intrarticular
Drug targets
receptors, enzymes, ion channels
Drug receptors
membrane bound protein, target for specific ligand bonding
Types of receptors
Direct ligand gated, Gprotein coupled, tyrosine kinased coupled, nuclear receptor
Affinity
extent of binding to a receptor
Specificity
ability of a drug to produce a reaction at a specific site
Efficacy
ability of drug to produce an effect at a receptor
Potency
relative amount of a drug that has to be at a receptor to cause an effect
Pharmacokinetic processes
ADME
Solubility of a drug
drug ionisation,
Dose
amount of drug administered
Drug Schedules
dangerous poisons, OTC, pharmacist only, prescription only, hazardous, industrial and ag poisons, dangerous poisons, controlled drugs e.g morphine, prohibited substances
The ideal antiepileptic drug
highly effective with low toxicity, effective against more than one type of seizure, long acting and non sedation, not highly protein bound to limit drug interactions, inexpensive, no tolerance developed
Blood: gas coefficient
ratio of concentration in the blood to the concentration in the gas
States of Anaesthesia
- onset of anaesthetic admin and last until loss of consciousness 2. excitement - reflexes present but exaggerated 3. surgical anaesthesia - monitoring of pt 4. paralysis and toxicity
MAC
minimum alveolar concentration - concentration of an anaesthetic in the alveoli that prevents the muscular response to a painful stimulus in 50% of subjects
Gate Control Theory
A physiologically analgesic spinal gate mechanism in the dorsal horn can modify the transmission of painful sensation from peipheral nerve fibers to the thalamus
The gate is influenced by descending inhibition from the brain
CNS neurotransmitters
dopamine - behaviour, emesis, hormone release, motor control
ACh - cognition and memory, motor function
NA - arousal, sleep, mood, appetite, temp control, hormone release
serotonin - behaviour
GABA - inhibitory, motor function