2 fingers wide

Date: Week 3, Paediatrics Posting
Place: Seremban GH
Incident: Case presentation with Dr Liu

Dr Liu: How do you judge whether a B.P cuff is suitable for a child?
All students: 2/3 rd the length, appropriate size, etc
Dr Liu: Yes, but how do you tell if it is the right width?
Rama: We should be able to stick 2 fingers beneath the cuff!
Dr Liu: Nonsense...that's how your mother teach you to buy shoes!
Rama: .....