qSOFA
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
qSOFA (0-3)
About this calculator
The qSOFA calculator is a tool used to assess the severity of patients suspected of sepsis. It takes into account three clinical parameters: respiratory rate (RR), systolic blood pressure (SBP), and altered mental status.
The qSOFA score is calculated based on the following criteria: respiratory rate of 22 or more breaths per minute, systolic blood pressure of 100 mmHg or less, and altered mental status. Each of these criteria contributes one point to the total score, which ranges from 0 to 3.
qSOFA is useful in emergency situations, where it is necessary to quickly assess the patient's condition and decide on the best treatment approach. It can be used in emergency departments, intensive care units, and other critical care settings.
It is essential to note that qSOFA does not replace a complete and thorough clinical evaluation but rather serves as a screening tool to identify patients who require immediate attention. Additionally, qSOFA should be used in conjunction with other tests and evaluations to obtain an accurate and effective diagnosis.
Frequently asked questions
What is qSOFA?
qSOFA is a calculator that assesses the severity of patients suspected of sepsis, considering respiratory rate, systolic blood pressure, and altered mental status.
When should I use qSOFA?
qSOFA should be used in emergency situations, where it is necessary to quickly assess the patient's condition and decide on the best treatment approach.
How is qSOFA calculated?
qSOFA is calculated based on the following criteria: respiratory rate of 22 or more breaths per minute, systolic blood pressure of 100 mmHg or less, and altered mental status.
What is the total qSOFA score?
The total qSOFA score ranges from 0 to 3, depending on the number of criteria met.
Does qSOFA replace a complete clinical evaluation?
No, qSOFA does not replace a complete and thorough clinical evaluation but rather serves as a screening tool to identify patients who require immediate attention.