iv anes, gen anes, local anes Flashcards
Ketamine antagonize what receptors
Nmda receptors
All IV anes acts on gaba receptor exc
Ketamine
Rate of transfer into the brain and the anesthetic effect is regulated by the ff factors
- Inbound drug
- Reduced cerebral blood flow
- Non-ionized
- Lipid soluble
- Rapid injection
Hyperventilation will increase/decrease protein binding
Decrease protein binding= increase unbound drug = increase anes effect
T or F: protein binding is affected by changes in ph
True
CBF is reduced becoz Of low/high CO
Low CO.
Anes effect is delayed but enhanced
T or F: rapid administration also affects the extent of cvs and respiratory side effects
True
Alkylthenol cmpd
Propofol
Propofol: insoluble/soluble in water
Insoluble.
Requires egg lecithin emulsion 1%
Propofol: pain / no pain on injection
Pain on injection
Feeling of week being andn euphoria
Propofol
Propofol: increase/decrease CMRCO2, CBF, ICP, cerebral perfusion rate
Decrease
Drug of choice if LMA is used
Propofol
With anticonvulsant and antiemetic prop
Propofol
Asso with release of histamine and anaphylactoid reaction
Propofol
Propofol EEG. Frequency and amplitude and duration of seizures
Increase amplitude
Decrease frequency
Decrease duration of seizure
Propofol anes is induced sec
40-60s
Ketamine anes induced sec
30-60s
Ketamine: soluble/insoluble to water
Soluble to water
Lipid soluble also
Phencyclidine
Ketamine
Dissociative anes.. Rather than generalized depression of cns
Ketamine
Ketamine EEG. Alpha and tetha
Loss of alpha waves
More tetha waves
Ketamine: increase/decrease CMRCO2, CBF, ICP, cerebral perfusion rate
Increase
Propofol: increase/decrease arterial P, HR
Decrease
Ketamine: increase/decrease arterial P, HR
Increase
Inotropic effect of Propofol
(-) inotropic effect
Inotropic effect of ketamine
(+) inotropic
Propofol/ketamine: apnea is more common
Propofol
Propofol/ketamine: transient apnea, ventilation is maintained
Ketamine
Propofol/ketamine: no effect on bronchial ms tone
Propofol
Propofol/ketamine: bronchodilation
Ketamine
Propofol/ketamine: decrease ms tone, movement on stimulation
Propofol