SBA Mock 1 Incorrect Topics

Question 1

estimating paediatric tube length and diameter

Answer 1

length: age/2 + 12(oral) OR + 15 (nasal)

Diameter: age/4 + 4

Question 2

Paediatric doses:

• Paracetamol
• Ibuprofen
• Fentanyl
• Morphine

Answer 2

• Paracetamol: 15 mg/kg
• Ibuprofen: 10mg/kg
• Fentanyl: 1 mcg/kg
• Morphine: 0.1mg/kg

Question 3

What nerve palsy’s can occur with interscalene block?

Answer 3

100% phrenic nerve palsy

25% stellate ganglion, Horners syndrome

Question 4

What conditions does pulse oximeter over read?

Answer 4

Carboxy-Hb as absorbtion coefficient is similar to oxy-Hb

Question 5

What consititutes soda lime and in what proportion?

Answer 5

95% calcium hydroxide
5% sodium hydroxide
other- potassium hydroxide

Question 6

What are the steps of cleaning equipment?

Answer 6

1. Cleaning - physically removing foreign material, without destroying infective material (ultrasonic bath/ low-temp steam)
2. Decontamination - removing contaminants such that they are unable to reach a site in sufficient quantities to cause infection/ harmful reaction.
3. Disinfection - removes organisms except spores. Uses alcohol 50-70%, chlorhexidine 0.5-5% + hydrogen peroxide. OR pasteurisation.
4. Sterilisation - rendering an object completely free of all visible infectious agents. Ethylene oxide & 2% glutaraldehyde, gamma radiation or autoclave.

3.

Question 7

JVP - What do the waves represent:

a?

Answer 7

atrial contraction

Question 8

JVP - What do the waves represent:

c?

Answer 8

bulging of closed tricuspid valve when ventricle contracts

Question 9

JVP - What do the waves represent:

x?

Answer 9

atrial relaxation

Question 10

JVP - What do the waves represent:

v?

Answer 10

venous return against closed tricuspid valve

Question 11

JVP - What do the waves represent:

y?

Answer 11

emptying into ventricles, atrial relaxation

Question 12

What waves will you in JVP with:

1. cannon a waves
2. absent a waves
3. large v waves

Answer 12

1. cannon a waves - heart block, atrial contraction against closed TV
2. absent a waves - AF
3. large v waves - Tricuspid regurg

Question 13

JVP Waves:

what might you see with elevated JVP and no waveform?

Answer 13

SVC obstruction

Question 14

JVP: What condition may you see elevated JVP with deep x and y descents?

Answer 14

constrictive pericarditis.

Question 15

What is size E cyclinder?

Answer 15

680 L

Question 16

Why is atropine ineffective in complete heart block?

Answer 16

complete heart block - av node dissociate
Atropine will only increase SA node rate therefore atrial rate.

Isoprenaline better as will increase heart rate via B1 agonism.