Anaesthetics Tutorial Flashcards Preview

Jason's MD2 Surgery Rotation > Anaesthetics Tutorial > Flashcards

Flashcards in Anaesthetics Tutorial Deck (36):
1

How long to fast for?

6hours
clear fluids

2

crico pressure for what?

may occlude oesphagus

3

why paralyze and muscle relaxants?

ease of intubation
for delicate procedures like neurosurg

4

Aiway assessment?

Dentition: crowding
Open mouth: 3 cm needed
Mandibular protrusion
Mallenpatti
thyromental junction

5

desirables in Anaesthesia

asleep
amnesia
analgesia
wakeful (day of surgery, neurosurg)
anxiolysis
muscle relaxation
less PONV
airway
aspiration risk
temperature mx

6

advantage of plexus and nerve blocks to general?

post-operative analgesia

7

to kinds of neuraxial blocks?

spinal
epidural

8

where does a spinal block go?

sub-arachnoid space

9

epidural get good coverage?

Nope: about 3-4 above and below

10

how much fluid needed for spinal block?

only 2-3 mls because it circulates in the CSF

11

how much fluid needed for epidural block?

10-15ml to get appropriate spread

12

why epidural for labour?

duration is longer due to infusion
post-op analgesia

13

what kind of block for caeserian section?

spinal usually

14

3 things to achieve General Anaesthesia?

hypnosis
analgesia
muscle relaxation

15

2 kinds of general anaesthesia?

1. spontaneous ventilation
2. muscle relaxation (absolute - including diaphragm)

16

what kind of airway device for spontaneously ventilation?

laryngeal mask

17

what kind of airway device for muscle relaxant GA?

intubation

18

why a cuff for the intubation?

prevent aspiration

19

who is at risk for aspiration in anaesthesia?

non-fasting
trauma/emerg
GORD
preg for >20 weeks to >6weeks post partum

20

why preg increase GORD?

increased intrabdominal pressure
progesterone relaxes esophageal sphincter

21

3 phases of anaesthesia:

Induction
maintenance
reversal/emergence

22

drugs for induction?

propofol
benzos: midazolan
fentanyl

23

drugs for maintenance?

sevofluorane
morphine for analgesia

24

fentanyl for what in induction?

ablate the sympathetic response for intubation process

25

sevoflurane, isofluorane, desfluorane is what?

inhaled gas

26

green dream/green whistle is what analgesia?

penthane

27

who gets propofol infusion for maintenance?

PONV strong history
neurosurg

28

TIVA is what?

total intravenous analgesia

29

paralyzing agents?

Rocuronium
veccuronium
atracurium
suxamathonium

30

Non depolarizing muscle relaxants work how? how long do they work for?

competitive antagonist to the muscle side receptor

works for 3-45 mins

31

what to use to reverse muscle paralysis?

acetyl choline esterase inhibitor
neostigmine

32

neostigmine side effects?

bradycardia

33

antimuscarinic for reversal?

glycopyrorate

34

how to prevent bradycardia in reversal after neostigmine admin?

give antimuscarinic

35

suxamethasone lasts how long?

1-3 minutes
rapid sequence induction (RSI)

36

ketamine is what? when used? where used?

dissociative drug
preserves some airway reflexes
used in developing countries, low resource settings

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