Oxford Anaesthetic Complexity (OxAnCo) Score: Technical Subscore and Total Score

Parameter

Finding

Points

anesthesia

general anesthesia only

1

neuraxial only

1

general plus neuraxial

2

general plus regional

2

regional only

2

sedation only

1

advanced ventilation

no

1

yes

4

cardiac bypass

no

1

yes

5

invasive monitoring

no

1

yes

2

surgery

major

3

intermediated

2

minor

1

expected blood loss

< 500 mL

1

>= 500 mL

2

emergency surgery

yes

3

no (elective)

1

location of surgery

operating room

1

outside operating room

3

need for postop ICU

no

1

yes

3