What is the Revised Trauma Score?

The Revised Trauma Score (RTS) is a physiologic scoring system using GCS, systolic blood pressure, and respiratory rate. Each is coded 0–4, and the weighted RTS predicts survival probability. It is used in triage and trauma outcome research. An RTS of 12 (maximum) correlates with >96% predicted survival.

What is the ASA Physical Status Classification?

The ASA classification is a 6-point scale (ASA I–VI) used by anesthesiologists to assess preoperative fitness. ASA I is a healthy patient, ASA II has mild systemic disease, ASA III has severe systemic disease, ASA IV has life-threatening disease, ASA V is moribund, and ASA VI is brain-dead for organ donation. Higher ASA class correlates with increased perioperative risk.

How does the Parkland Formula work?

The Parkland Formula estimates fluid requirements for burn resuscitation in the first 24 hours: 4 mL × body weight (kg) × %TBSA burned. Half is given in the first 8 hours, and the remaining half over the next 16 hours. Lactated Ringer's is the preferred crystalloid. The formula provides a starting estimate — actual fluid rates should be titrated to urine output.

Surgical Risk & Assessment Calculators

Surgical assessment tools including the Revised Trauma Score, ASA Physical Status Classification, Parkland Formula for burn fluid resuscitation, and NYHA Classification for cardiac surgical risk. Used for preoperative planning and trauma assessment.

This category currently includes 4 tools, including ASA Class, RCRI Score, and Mallampati Score.

These resources are built for clinicians, trainees, and medically informed patients who need fast bedside calculations. Use the results as decision support and pair them with full clinical context and local guidelines.

All Surgery Tools (4)

ASA Class

Classify preoperative physical status using the ASA I–VI system for anesthetic risk stratification. ASA III+ indicates significant systemic disease requiring special perioperative planning and precautions.

RCRI Score

Estimate perioperative major cardiac event risk for non-cardiac surgery using the 6-factor Lee RCRI model.

Mallampati Score

Classify airway visibility (Class I-IV) to support difficult-airway risk assessment before anesthesia or airway procedures.

Caprini Score

Estimate postoperative venous thromboembolism risk using the Caprini point-based model for surgical patients.

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