Anaesthetics + Perioperative Care Flashcards

1
Q

What ASA is a normal healthy patient?

A

ASA I

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2
Q

What ASA is a brain-dead patient?

A

ASA VI

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3
Q

What ASA is a patient who will likely die without surgical management?

A

ASA V

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4
Q

How does BMI differ between ASA II and III

A

II: >30
III: >40

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5
Q

A social drinker with tight diabetes control is an ASA?

A

II

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6
Q

How does MI history differ between ASA III and IV

A

>3 months = III
<3 months = IV

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7
Q

What ASA is someone with end stage renal disease?

A

Regular dialysis: III
no dialysis: IV

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8
Q

When should you avoid TED stockings

A

Peripheral artery or neuropathy
Fragile or allergy prone skin
Improper fit (deformity, oedema)

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9
Q

VTE prophylaxis in acutely ill, palliative, psychiatrically ill

A

LMWH
fondapirinux sodium if above contraindicated

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10
Q

VTE prophylaxis in renal impairment

A

LMWH or UFH
May need to reduce dose

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11
Q

VTE prophylaxis in a cancer patient

A

NOT ROUTINE IF MOBILE/RECEIVING THERAPY

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12
Q

If a myeloma patient was receiving -lidomides + steroids, what VTE prophylaxis would you give?

A

Aspirin 75 or 150mg
OR
LMWH

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13
Q

What post-op VTE regimens would you give for an elective hip?

A

10 days LMWH then aspirin 75/150mg for another 28 days
OR
LMWH 28 days + VTE stockings until discharge
OR
Rivaroxaban

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14
Q

Post-op VTE meds for elective knee

A

14 days 75/150mg aspirin
OR
14 days LMWH + VTE stockings until discharge
OR
Rivaroxaban

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15
Q

Post-op VTE meds for fractures of pelvis, hip and prox femur

A

Month long regimen of
LMWH from 6-12 hours post-op
Fondapirinux 6 hours post-op where there is low risk of bleeding

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16
Q

Which diabetic medication do you change THE DAY BEFORE surgery?

A

Once daily insulin
Reduce dose by 20%

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17
Q

On surgery day, what do you do
a) in the morning
b) in the afternoon
if the patient is on metformin?

A

For both
OD/BD: take normally
TDS: Omit lunchtime dose

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18
Q

On surgery day, what do you do
a) in the morning
b) in the afternoon
if the patient is on glicliazide

A

Morning
OD: omit
BD: omit morning dose
Afternoon
OD or BD: omit

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19
Q

On surgery day, what do you do
a) in the morning
b) in the afternoon
if the patient is on a -flozin?

A

Omit all on day of surgery

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20
Q

On surgery day, what do you do
a) in the morning
b) in the afternoon
if the patient is on lantus

A

Reduce dose by 20% for day before and of surgery

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21
Q

On surgery day, what do you do
a) in the morning
b) in the afternoon
if the patient is on novomix/humulin 3

A

Twice daily/biphasics
Half morning dose, don’t change evening dose

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22
Q

What two diabetic drugs are taken as normal the day before and of surgery?

A
  • gliptins (DPPIV inhibitors)
  • tides (GLP-1 analogues)
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23
Q

Patient gets a fever on day 1 post-op; what is the likely cause? how would you treat it?

A

Wind (1-2), water (3), wound (5), walking (5-7), wonder drug (7+)

Ateclasis

Sit upright, breathing exercises

24
Q

Patient gets a fever day 7 post-op, what is the cause?

A

Wind (1-2), water (3), wound (5), walking (5-7), wonder drug (7+)

25
Patient gets a fever day 5 post-op, what is the likely cause?
Wind (1-2), water (3), **wound (5)**, walking (5-7), wonder drug (7+)
26
What causes a fever day 6 post op?
Wind (1-2), water (3), wound (5), **walking (5-7),** wonder drug (7+) DVT/PE
27
What causes a fever on post op day 3?
Wind (1-2), **water (3)**, wound (5), walking (5-7), wonder drug (7+) UTI
28
What action should be taken pre-op if the blood loss in surgery is Unlikely Likely Definite
U: G+S L: Cross match 2 units D: 4-6 units
29
When should blood transfusion be given in patients normally and with ACS
normal: 70g/L or under ACS: 80g/L or under
30
Patient with clinically significant (not haemorrhage) bleeding with APTT \>1.5, what do you give?
FFP 150-220ml
31
Patient with clincially signficant bleeding with DIC with fibrinogen conc \<1.5g/L
Fibrinogen \<1.5g/L so cryoprecipitate
32
When can cryoprecipitate be given prophylactically?
Surgery with significant bleeding risk fibrinogen \<1/0g/L
33
What can be given to reverse severe bleeding or IC haemorrhage?
Prothormbin complex concentrate
34
When can TXA be useful in bleeding trauma?
Bolus then infusion within 3hours of bleeding
35
How do the IV anaesthetics work?
Most potentiate GABA-A inhibition Ketamine blocks NMDA receptors
36
When is propofol to be used with caution?
Haemodynamic instability as causes hypotension
37
What side-effect of propofol can be useful post-op?
Anti-emesis for high risk patients
38
Which anaesthetics are useful in haemodynamic instability
KETAMINE Etomidate also lesser hypotension than propofol/thiopental
39
Which anaesthetic agent causes adrenal suppression?
Etomidate
40
What anaesthetic casues hallucinations?
Ketamine
41
Which drugs can induce malignant hyperthermia?
Suxamethonium Volatile anaesthetics
42
How is suxamethonium different from the other muscle relaxants?
Depolarising NM blocker Causes MH, hyperkalaemia and AChase insufficiency Cannot reverse with neostigmine
43
Order the following drugs' duration time from shortest to longest Suxamethonium Atracurium Vecuronium Pancuronium
S V A P
44
What airway methods are best for shorter procedures?
Oropharyngeal Laryngeal mask
45
What airway method is good in reduced GCS? When can you not use it?
Nasopharyngeal Basilar skull fractures
46
What is the downside of laryngeal masks/
Poor reflux control
47
What airway method is good for optimal control for long and short term ventialtion?
ET tube
48
Regarding lidocaine, what.. Circumstances is it cautioned? Is used to treat it?
Low liver function or protein 20% lipid emulsion
49
Regarding surgical nutrion options, which Have low aspiration risk? Are useful in those who cant enterally feed?
Naso-gastric, Naso-jejunal and feeding jejunostomy TPN
50
Aside from diabetc drugs, what drugs do you continue on the day of surgery?
B-blockers Blood pressure meds Diuertics for heart failure
51
When does the COC pill need to be stopped before surgery?
4-6 weeks prior
52
When does St. John/s wort and epehdra need to be stopped before surgery?
2 weeks prior
53
When does the clopidogrel need to be stopped before surgery?
7 days
54
When do DOACs (including treatment dose rivaroxiban) need to be stopped before surgery?
2 days
55
When does Lithium, ACEIs and rivaroxiban (non-treatment dose) need to be stopped before surgery?
Day before (rivaroxiban 18hrs)
56
When do K+ sparing drugs, metformin and gliciazide need to be stopped?
Morning of surgery
57
What is done for insulin dependents if they are going to miss \>1 meal/eGFR \<60 or use of contrast media
Sliding scale insulin from NBM start