pre op/intra op notes

Question 1

anaesthetic

Answer 1

drugs that depress the CNS and PNS. Depression of consciousness, sensory stimulation. Interferes with nerve conduction

Question 2

general anaesthesia

Answer 2

drug that induces altered CNS state, varies degree of pain stimuli, consciousness, skeletal muscle relaxation

Question 3

Overton Myer theory

Answer 3

the more lipid soluble the drug is the higher potency it has

Question 4

Minimum alveolar concentration (MAC)

Answer 4

measures potency of volatile anaesthetics. Minimum amount of alveolar air concentration that is required to prevent movement in 50 percent of patients. is used to compare potency of anaesthetics.

Question 5

local anaesthetics

Answer 5

block nerve conduction to a specific area. spinal and epidural

Question 6

Spinal

Answer 6

local anaesthetic that temporarily paralyses skeletal and smooth muscle. no loss of conciousness.
Risk: spinal headache, resp depression, infection
Benefits: safer for pts with cardiac and resp co-morbidites. flexible-prolonged pain relief. Pt is conscious.

Question 7

Intrathecal

Answer 7

local anaesthetic for lower body, shorter surgeries. Pt conscious. Safer for patients with cardiac and resp comorbidities.