ARISCAT postoperative pulmonary complication risk
Risk of pulmonary complications after surgery.
Inputs
CompleteAge
Preoperative SpO₂
Respiratory infection in the last month
Preoperative anemia (hemoglobin 10 g/dL or less)
Surgical incision
Duration of surgery
Emergency procedure
Worked calculation
Your values are highlighted.
- Points
When to use
- Before surgery under general, neuraxial, or regional anesthesia.
Pearls and pitfalls
- Intermediate or high risk: lung-protective ventilation, early mobilization, incentive spirometry.
Why use
Seven readily available variables.
| Criterion | Points |
|---|---|
| Age: 50 or younger | 0 |
| 51–80 | +3 |
| Over 80 | +16 |
| Preoperative SpO₂: 96% or higher | 0 |
| 91–95% | +8 |
| 90% or lower | +24 |
| Respiratory infection in the last month | +17 |
| Preoperative anemia (hemoglobin 10 g/dL or less) | +11 |
| Surgical incision: Peripheral | 0 |
| Upper abdominal | +15 |
| Intrathoracic | +24 |
| Duration of surgery: Under 2 hours | 0 |
| 2–3 hours | +16 |
| Over 3 hours | +23 |
| Emergency procedure | +8 |