| PICSO | pressure-controlled intermittent coronary sinus occlusion |
|---|---|
| RCS | rabbit aorta-contracting substance; red cell suspension; reticulum cell sarcoma; right coronary sinu... |
| RS | radioscaphoid; random sample; rating schedule; Raynaud syndrome; recipient's serum; rectal sinus; re... |
| RSR | regular sinus rhythm; relative survival rate; right superior rectus [muscle] |
| RSSR | relative slow sinus rate |