The Assess Respiratory Risk in Surgical Patients in Catalonia score, commonly known as the ARISCAT score, is a clinical calculator used to predict the risk of postoperative pulmonary complications in patients undergoing non-cardiothoracic surgery. This scoring system is applicable to a wide range of surgical patients, particularly those in Catalonia, Spain, but it has also been validated in other populations.

The ARISCAT score takes into account seven variables: age, preoperative oxygen saturation, respiratory infection in the last month, preoperative anemia, type of surgery (intrathoracic or abdominal), duration of surgery, and emergency surgery. Each variable is assigned a certain number of points, and the total score is used to stratify patients into low, intermediate, or high risk for postoperative pulmonary complications.

The clinical utility of the ARISCAT score is to aid clinicians in preoperative risk assessment and decision-making, helping to guide perioperative management strategies to reduce the risk of complications. It can also be used to inform discussions with patients about their individual risk.

There are no specific exclusion criteria for the use of the ARISCAT score, but it may be less accurate in populations outside of Catalonia, or in patients undergoing cardiothoracic surgery, as these were not the populations in which

Assess Respiratory Risk in Surgical Patients in Catalonia score (ARISCAT score)

# Criteria
 ## Age in years
A. <= 50 (+0)
B. 51-80 (+3)
C. > 80 (+16)
## Preoperative SpO₂
D. >= 96% (+0)
E. 91-95% (+8)
F. <= 90% (+24)
## Respiratory infection in the last month
G. Yes (+17)
H. No (+0)
## Preoperative anemia (hemoglobin <= 10 g/dL)
I. Yes (+11)
J. No (+0)
## Surgical incision
K. Peripheral (+0)
L. Upper abdominal (+15)
M. Intrathoracic (+24)
## Duration of surgery
N. <= 2 hrs (+0)
O. 2-3 hrs (+16)
P. > 3 hrs (+23)
## Emergency surgery
Q. Yes (+8)
R. No (+0)

# Conditions
- score < 26
- score <= 44
- score > 44
- score == 0