Obesity

Question 1

What is Brocas formula? (2)

Answer 1

1. Calculates IBW
2. Men = height (cm) - 100
   Women = height (cm) - 105

Question 2

How is adjusted bodyweight calculated?

Answer 2

IBW + 40%

Question 3

What changes do you find in respiration in obese patients?

Answer 3

• Reduced functional residual capacity (from normal of 2L to 1L if BMI >40)
• OSA/OHS

Question 4

In terms of type of obesity, what is more high risk?

Answer 4

Central obesity (waist > 50% height)
- increased airway/ventilation risk
- increased CVS disease
- increased metabolic syndrome

Question 5

What occurs to the cardiovascular system in obesity?

Answer 5

SV/CO/blood volume all increase leading to both pulmonary and systemic HTN

Question 6

What is the max load of a scoop?

Answer 6

227 kg

Question 7

What is the max load of a normal stretcher?

Answer 7

191kg (30 st)

Question 8

What is the max load of a bariatric stretcher?

Answer 8

268kg (50 st)

Question 9

What drugs use lean body weight? (8)

Answer 9

1. Propofol induction
2. Ketamine
3. Non-depolarising paralytics (rocuronium)
4. Morphine
5. Fentanyl/alfentanil
6. Paracetamol
7. LA
8. Thiopentone

Question 10

What medication use adjusted body weight? (4)

Answer 10

1. Propofol infusion
2. Neostigmine
3. Suggamedex
4. Abx

Question 11

What medications use total body weight? (3)

Answer 11

1. Suxamethonium
2. Midazolam
3. LMWH