Medical Abbreviation
RA
RA is a medical abbreviation with more than one meaning — most commonly Rheumatoid arthritis / Right atrium. Its meaning depends on the clinical context.
What does RA mean?
| Meaning | Context | Field |
|---|---|---|
| Rheumatoid arthritis | Autoimmune joint disease | Rheumatology |
| Right atrium | Heart anatomy | Cardiology |
| Room air | Oxygen status (breathing without support) | Respiratory |
| Rooming air / Regional anesthesia | Various | General |
Why it matters
RA meaning "room air" (breathing normally without oxygen) is very different from RA the disease or RA the heart chamber. Context makes it clear.
Related abbreviations
Study reference only — not medical advice. Always consult qualified sources and supervisors for clinical decisions.