- Radius Fractures
- Reflex Sympathetic Dystrophy
- Renal Dialysis
- Renal Insufficiency
- Respiration Disorders
- Respiration, Artificial
- Respiratory Distress Syndrome, Adult
- Respiratory Distress Syndrome, Newborn
- Respiratory Insufficiency
- Respiratory Syncytial Virus Infections
- Respiratory Tract Infections
- Rheumatic Fever
- Rheumatic Heart Disease
- Rhinitis
- Rhinitis, Allergic, Perennial
- Rhinitis, Allergic, Seasonal
- Rhinovirus