When can prophylactic clexane be given post epidural catheter removal
a) 2 hrs
b) 4 hrs
c) 6hrs
d) 12hrs
e) 24hrs
NA or surgery - 12h
Catheter removal - 4h
Temperature measurement during cardiopulmonary bypass - ?most accurate
A) Nasopharynx
B) Oxygenator arterial outlet
C) Oxygenator venous inflow
D) Bladder temp
E) PA Cath
Oxygenator arterial outlet - most accurate during bypass
Nasopharynx - best surrogate during warming and immediately post bypass
PAC best overall
Giving DDAVP to VWD type 3
a) No effect
b) If they’ve had a positive challenge test
No effect
Which of the following have least effect on chronic pain following surgery
a. Ketamine
b. Duloxetine
c. Regional blocks
d. Gabapentinoids
Gabapentinoids - per APS PG
Duloxetine has L2 evidence
Parkinson’s patient on apomorphine infusion what is the most appropriate antiemetic?
a) Ondansetron
b) Droperidol
c) Metoclopramide
d) Cyclizine
e) Another dopaminergic drug
Ondansetron CI if on MAOi as will force 5HT down 5HT1/2 pathway
What has the most favourable number needed to treat (?for post op pain)
a) Paracetamol
b) Paracetamol + codeine
c) Paracetamol + ibuprofen
d) codeine
e) ibuprofen
Paracetamol + ibuprofen
Paracetamol + ibuprofen NNT = 1.5
Ibuprofen NNT = 2
Paracetamol + codeine NNT = 2.2
Ibuprofen + codeine NNT = 2.2
Paracetamol NNT = 3.5
When does deflation of an aortic balloon occur
a. Commencement of the T wave
b. Middle of the T wave
c. End of the T wave
d. R wave
e. S Wave
Inflate - peak of T wave
Deflate - peak of R wave
Best NNT for prevention of post-amputation pain
a) neuraxial
b) peripheral catheter
c) ketamine
d) gabapentinoid
Neuraxial analgesia has the strongest evidence for reducing the incidence and severity of chronic post-amputation pain.
4mg/kg = 80mg
Suxamethonium peak IM onset time?
30sec
1min
2min
4min
5min
Onset: 3-4min
Peak: 4min
Duration: 10-30min
42) You puncture the thyrohyoid membrane to anaesthetise the airway. What nerve are you anaesthetising inferior to the epiglottis and superior to the cords?
a. Recurrent laryngeal
b. Lingual
c. Superior laryngeal
d. Inferior laryngeal
e. Glossopharyngeal
a) Internal branch of superior laryngeal nerve
Analgesia for sternal fracture
Which will work
Which wont work
PVB
Transvers thoracic plane
TED
Thoracodosal
Intercostobrachial
PECI or PECII
Sternal bed blocks
Intercostal n. block (ant)
Intercostal n. block (lat)
Serratus anterior
YES:
- Sternal bed blocks – superficial to transversus thoracis muscle
- Intercostal (ant)
- Paravertebral
- Erector spinae
NO
PECS block (lateral and medial pectoral nerves)
- serratus anterior
- Long thoracic (serratus)
- intercostal (lat)
- intercostobrachial
- thoracodorsal (lat dorsi)
Fibrinogen replacement during postpartum haemorrhage, what level to aim? vs below what level do you replace fibrinogen?
Aim Fib >2g/L
Always first to fall in obstetric bleeding. Consider replacing early.
E.g. obstetric trauma - give 4g fibcon stat
Max safe ropivacaine dose in adults
18mg/h
20mg/h
24mg/h
28mg/h
30mg/h
28mg/h
770mg/24h
Max dose bupivacaine 400mg/24h
ANZCA endorsed guideline of GLP-1 perioperative management
a) Do not cease periop and treat as unfasted
b) Cease 4 week
c) Cease 1 week
d) Various other options
Most patients may continue GLP-1 RAs
How to prevent microschock
a) Equipotential earthing
b) LIM
c) RCD
d) Fuse
Equipotential earthing ensures every conductive surface is at the same electrical potential.
➡️ No potential difference → no microshock, even if a leakage fault exists.
Intralipid dose/max dose?
1.5ml/kg bolus -> 15ml/kg/hr
- max dose 12ml/kg 20% intralipid
If cardiovascular stability not restored or an adequate circulation deteriorates can:
- repeat bolus at 5 and 10 mins
- Can double infusion rate to 30ml/kg/hr after 5 mins
Fluid status in children
Formula for fluid deficit (2)
Volume
= Δ weight in grams
= weight grams · % dehydration
Minimum current for VF macroshock
a) 100 mA
Micro shock 0.05-0.1mA
Abnormal capnogram trace
a) ETT cuff leak
b) Gas analyser partial disconnection
c) Unilateral lung transplant
d) Spont breathing during PPV
Gas analyser partial disconnection
Management of a can’t intubate, can’t oxygenate (CICO) scenario: when you inflate for 2sec breath, how frequently do you cycle breaths?
breath cycling during CICO cannula insufflation via Leroy rapid O2 device
-2s inflation Q30sec
NOT same as manual jet vent
- 1s inflate + 4s passive deflate
- I.e. 12bpm
Diabetes ANZCA document, which don’t require a higher control of 10 +- 2.5
a. Autonomic dysreflexia
b. Older than 75 years
c. Pregnancy
d. Hypo unawareness
Pregnancy = lower control
5 +/- 1 (i.e. 4-6mmol/L)
Usual = 7.5 +/- 2.5 (i.e. 5-10mmol/L)
Which of the following does not effect the defibrillation potential of an AICD?
a. Sotalol
b. Flecainide
c. Verapamil
d. Lignocaine
Sotalol if it is which does not increase the defibrillation threshold
No effect = procainamide, propafenone
Young male with burns.
First 24hrs.
Which of the following expected.
a) Increased cardiac index
b) Inc stroke volume
c) Increased PVR
d) Increased hepatic blood flow
e) Reduced SVR
c) Increased PVR