Pharmacology Week 10 Flashcards
What are some examples of therapeutic uses for CNS drugs?
- depression
- migraine
- anxiety
- insomnia
What are example of drugs used socially that affect the CNS?
- caffeine
- alcohol
- nicotine
endogenous chemicals that transmit signals from a neuron to a target cell across a synapse
central neurotransmitters
what are some examples of fast point-to-point signaling?
- amino acids: glutamate, aspartate, GABA, glycine
- Ach
What are some examples of slow regulatory signaling?
-neuropeptides
-monoamines
others (histamine 1 receptors, nitric oxide
say whether the amino acid is excitatory or inhibitory:
- Glutamate:
- aspartate:
- GABA:
- glycine:
- Glutamate: excitatory
- aspartate: excitatory
- GABA: inhibitory
- glycine: inhibitory
used to render patients unaware of and unresponsive to painful stimulation
general anaesthetic agents (GA)
What are some examples of GA…
- IV:
- inhaled:
- IV: ketamine, midazolam, propofol
- inhaled: methoxyflurane and nitrous oxide
What are indications for IV general anesthetics?
- conscious sedation (midazolam, propofol)
- sedation during ventilation
- pain relief (ketamine)
potent IV analgesic
- dissociative anesthesia (patient appears awake but in unconscious)
- safer profile
ketamine
what are adverse effects of ketamine?
- raised BP and pulse rate
- increased muscle tone
What are adverse effects of propofol?
- involuntary movements
- bradycardia/ hypotension
- apnea
- IV anaesthetic that is used as first line
- unconsciousness occurs about 30 sec after injection
- short half life
propofol
what are indications for nitrous oxide and hydrocarbons?
- introduction and maintenance of anesthesia
- analgesia (green whistle)
widely used analgesics for moderate to severe pain. act on opiod receptors in the brain and spinal cord to control pain
opioid analgesics
What do opioid analgesics produce?
euphoria, reduce anxiety, promote sleep, inhibit coughing and may be used to treat diarrhea
most important in modulating pain. Its a GPCR receptors that affect the dorsal horn by inhibiting potassium channels and decreasing the messaging going through
mu-opioid receptor
from a plant, prototype drug, potent analgesic
morphine (ordine)
synthetic opioid, very potent
fentanyl (durogesic)
more lipid soluble, rapidly crosses BBB (when first used, believed to not be addictive)
heroine