pharmacology 1 Flashcards
- What is the generic name of a drug?
The chemical name of a drug (ex. acetaminophen)
- What is the trade name of a drug?
Brands that make the drug (EX Advil)
- What is a drug?
any chemical that can affect living processes
- What is the drug action?
How the drug molecules change processes in the body
- What is the therapeutic use of a drug?
Prevention, treatment, or management of a disease of system
- What are drug classes?
Classified according to physiologic function or primary disease treated
- What are preferred agents?
The “go-to” drugs in a healthcare system
- What is pharmacokinetics?
the study of what the body does to the drug
- What is the time of onset?
Time required for a drug to elicit a therapeutic effect
- What is peak effect?
time required for a drug to reach its maximum therapeutic response
- What is. peak level?
highest level of a drug in the body
- What is the duration of action?
the length of time the drug has a pharmacologic effect
- What are the pharmacokinetic actions?
Absorption, Distribution, Metabolism, Excretion
- What is absorption?
Movement of the drug from the admin site into the blood stream
- What. is distribution?
transport of a drug by the bloodstream to its site of action
- What is a drug-drug interaction?
occurs when two drugs are metabolized by the same enzyme and affect each other’s metabolism
- What is metabolism?
Happens in the liver, skeletal muscle, kidneys, lungs, plasma, or intestinal mucosa
- What is the first pass effect?
The initial metabolism in the liver of a drug absorbed from the gastrointestinal tract before the drug reaches systemic circulation through the bloodstream.
- What is excretion?
removal of drugs from the body
- What is the half-life of a drug?
amount of time it takes for the blood level of a drug to be reduced by 50%.
- What is pharmacodynamics?
How the drug affects the body
- What is the mechanism of action?
Changes that result from interactions
- What is the therapeutic index?
ratio of toxic dose to therapeutic dose
- What are the 3 chemical classes of opioids?
Morphine-Like, Meperidine-like, Methadone-Like
- What are some adverse effects of opioids?
respiratory depression, constipation, urinary retention, dizziness, hypersensitivity
- What are some contraindications of opioids?
Severe asthma, renal failure, increased intracranial pressure, known allergy
- Which opioid is a “non-ceiling” drug?
Morphine
- Which opioid is most effective given orally?
Codeine
- What is codeine metabolized to?
morphine
- Which opioids are schedule II?
Morphine, hydrocodone, meperidine,
- Which two opioids can be used an antitussives?
Codeine, Hydrocodone
- Which two drugs are oxycodone often combined with?
Acetaminophen (Percocet) or aspirin (Percodan)
- How quickly can opioid withdrawal occur?
2 weeks after use
- How do agonist-antagonist opioids work?
Binds to a pain receptor but causes a weaker pain response than a full agonist
- Which pain receptors are most important?
Mu receptors
- What are some adverse effects of agonists-antagonists?
Respiratory depression, dizziness, lightheadedness, abstinence syndrome
- Which patients cannot receive agonists-antagonists?
Patient with MI or cardiac insufficiency
- How are agonist-antagonists administered?
IM, IV, or intrsnasally
- How is Pentazocine (Talwin) administered?
Orally
- What do opioid antagonists do?
reverses symptoms of addiction, toxicity, and overdose
- How do opioid antagonists work?
Block opioid receptors
- What is the antagonist prototype?
Narcan (Naloxone)
- What are adverse effects of narcan?
Increased RR, HR, and BP as well as withdrawal
- How often should you monitor vitals after administration of Narcan?
- Every 5-15 minutes for several hours
- What are some interactions between opioids and substances (I.e. alcohol)
Respiratory depression
- What are some interactions of opioids and mono amine oxidase inhibitors?
Respiratory depression, seizures, hypotension
- What can show up on lab tests after administering opioid antagonists?-
Abnormal serum levels of amylase, bilirubin, lipase, and more
Abnormal decrease in urinary 17-ketosteroid levels
Increase in urinary alkaloid & glucose concentrations
- What is the dosage for Narcan?
.1-2 mg every 2-3 minutes
- What are the types of non-opioid analgesics?
1st Gen NSAIDS (COX-1 & COX-2)
2nd Gen NSAIDS (COX-2)
Acetaminophen Centrally-acting non-opioids
- What are NSAIDS used for?
Inflammation, Pain, Fever reduction
- What are the NSAID prototypes?
Aspirin, Ibuprofen, Naproxen, Indomethacin, Ketorolac
- What are the expected pharmacologic actions of NSAIDS?
Inhibit COX
- What are some adverse effects of NSAIDS?
GI bleeding, acute renal failure, Reye’s Syndrome (in kids), Salicylism
- What kidney levels should be monitored with NSAIDS?
BUN and Creatinine
- What are some contraindications of NSAIDS?
Known allergy, risk for bleeding, severe renal or hepatic disease, chronic alcohol abusers, pregnancy, children with viral infections
- What are some interactions with NSAIDS?
Anticoagulants, ibuprofen, ACE inhibitors, angiotensin receptor blockers, lithium carbonate and methotrexate
- Characteristics of Aspirin
Blocks pain centrally & peripherally Decrease responsiveness to pyrogens
Anti-platelet activity
Toxicity above 300 mcg/ml
Low to moderate pain
Gastric upset
- What is the first sign of aspirin toxicity?
Tinnitus
- Characteristics of Ibuprofen?
Plasma protein bound Used for pain and fever
Max of 2400 mg/day
- Symptoms of nonsalicylate NSAIDS toxicity
Drowsiness, lethargy, mental confusion, parenthesis, numbness, aggressive behavior, disorientation, seizures,
and GI toxicity
- What are COX-2 inhibitors used for?
Mild to mod pain, anti-inflammation, fever reduction, menstural pain
- What is the COX-2 inhibitor prototype?
Celecoxib (Celebrex)
- Why were COX 2 inhibitors developed?
To produce relief from pain and inflammation without the side effects of gastric irritation, bleeding and ulcers or the
effects on blood coagulation
- What do COX-2 inhibitors do effectively?
Suppress pain and inflammation
- What are the side effects of COX-2?
GI Upset Renal dysfunction
Cardio and cerebrovascular events (MI, stroke)
- What are the COX-2 interactions?
Lasix decrease Fluconazole increases celecoxib levels
Anticoagulant effects of warfarin increase
Glucocorticoids. increase bleeding risk Antihypertensive effects of ACE inhibitors decrease
Risk of lithium carbonate toxicity increases
- Is acetaminophen an NSAID?
No, it does not have anti-inflammatory effects
- What is the mechanism of action of acetaminophen?
Inhibits prostaglandin synthesis in CNS