Surgery Calculators
14 calculators
- Boey Score (Perforated Peptic Ulcer)Predicts mortality after emergency surgery for perforated peptic ulcer. Three simple risk factors.
- Surgical Apgar Score (SAS)Intraoperative 3-variable score predicting major postoperative complications and death within 30 days.
- Alvarado Score for AppendicitisClinical and laboratory scoring system for acute appendicitis. Helps determine need for CT and surgical consultation.
- P-POSSUM — Perioperative Mortality ScorePortsmouth-POSSUM estimates predicted morbidity and mortality for general surgical patients. Used for audit and consent.
- SORT — Surgical Outcome Risk ToolUK-derived tool predicting 30-day postoperative mortality for in-hospital non-cardiac surgery. Validated in 22,000 patients. Endorsed by RCS England.
- Clavien-Dindo Classification of Surgical ComplicationsInternationally standardised grading system for postoperative complications from Grade I (minor deviation) to Grade V (death). Mandatory for surgical audit and research.
- Paediatric Appendicitis Score (PAS)8-item score to predict appendicitis in children aged 3–18 years. Score ≥ 6 has sensitivity > 90% for appendicitis.
- P-POSSUM Score (Perioperative Mortality Risk)Portsmouth POSSUM (Physiological and Operative Severity Score for Enumeration of Mortality and Morbidity) predicts 30-day surgical mortality in abdominal surgery.
- Alvarado Score (Appendicitis)Estimates probability of acute appendicitis using clinical and laboratory findings. Guides CT scan and surgical referral decisions. Also known as MANTRELS score.
- Colorectal Cancer Staging (Dukes/TNM)Stages colorectal cancer using modified Dukes and TNM classification. Guides adjuvant chemotherapy and surveillance decisions.
- Breast Cancer Staging (TNM/AJCC 8th)Stages invasive breast cancer using TNM system. Guides adjuvant therapy, sentinel node biopsy, and radiotherapy decisions.
- Incisional Hernia Risk ScorePredicts risk of incisional hernia development after abdominal surgery. Guides prophylactic mesh placement decisions.
- Thyroid Cancer Risk Stratification (ATA)Stratifies differentiated thyroid cancer recurrence risk using ATA 2015 guidelines. Guides extent of surgery, radioiodine (RAI), and surveillance intensity.
- NELA Risk Score (Emergency Laparotomy)National Emergency Laparotomy Audit (NELA) risk model predicts 30-day mortality for emergency laparotomy. Mandated for all emergency laparotomies in England and Wales.