Emergency and critical care mnemonic

qSOFA bedside screen for sepsis with poor outcome

The mnemonic

RAS

What each word stands for

  • RRespiratory rate 22 per minute or more
  • AAltered mentation
  • SSystolic blood pressure 100 mmHg or less

Why it matters clinically

Two or more points flags higher risk of death and prompts urgent assessment.

Where it stops being reliable

A prompt for risk, not a diagnostic test, and not sensitive enough to rule sepsis out.

Teaching aid, still awaiting independent review. Confirm facts in a standard source.

More mnemonics

Common questions

What is the Emergency and critical care mnemonic?

RAS. It helps you recall: qSOFA bedside screen for sepsis with poor outcome.

What does "R" stand for?

Respiratory rate 22 per minute or more

What does "A" stand for?

Altered mentation

What does "S" stand for?

Systolic blood pressure 100 mmHg or less

What are all the parts of the RAS mnemonic?

R: Respiratory rate 22 per minute or more; A: Altered mentation; S: Systolic blood pressure 100 mmHg or less.

Which topic does this mnemonic belong to?

It belongs to Emergency and critical care in General Medicine.

Where does this mnemonic stop being reliable?

A prompt for risk, not a diagnostic test, and not sensitive enough to rule sepsis out.

How is this useful clinically?

Two or more points flags higher risk of death and prompts urgent assessment.

How do I make this mnemonic stick?

Say it aloud, write it from memory tomorrow, then again in a week. Then test yourself on a General Medicine question about Emergency and critical care.

Is this a standard mnemonic?

It is a teaching aid written or adapted by our team. Some resemble ones students share informally. Check any fact that matters in a standard source.