How to Use qSOFA Score Calculator
The qSOFA Score Calculator focuses on how to score three bedside sepsis risk indicators: respiratory rate, systolic blood pressure, and altered mentation. Follow these steps:
- Enter respiratory rate in breaths per minute
- Enter systolic blood pressure in mmHg
- Select altered mentation when GCS is below 15 or the patient is not at baseline mental status
- A score of 2 or more is a prompt to consider sepsis risk and further assessment
Formula & Theory — qSOFA Score Calculator
The qSOFA Score Calculator uses the following calculation logic:
qSOFA = respiratory criterion + blood-pressure criterion + mentation criterion
Respiratory rate ≥ 22/min = 1
Systolic blood pressure ≤ 100 = 1
Altered mentation or GCS < 15 = 1
Total range = 0 to 3 pointsqSOFA is intentionally simple. It does not require laboratory values, so it can be applied quickly at the bedside. Its strength is speed; its weakness is that it cannot replace full sepsis evaluation, lactate testing, cultures, or clinician judgment.
Use Cases for qSOFA Score Calculator
The qSOFA Score Calculator is most useful in these situations:
- Triage and bedside sepsis-screening education.
- Showing why hypotension plus tachypnea reaches the risk threshold even without altered mentation.
- Teaching the difference between a warning screen and a diagnosis.