RN Registered Nurse 注册护士

RNA Registered Nurse Anesthetist 注册麻醉护士

RNP Ribonucleoprotein 核糖核蛋白

RO Radio Operator 无线电报务员

roc residual organic carbon 残存有机碳

ROM Rupture Of Membrane 膜破裂

ROP Right Occipito-Posterior 枕右后

RP Retinitis Pigmentosa 视网膜色素变性

RPG Radiation Protection Guide 辐射防护指南

rpm right posterior measurement 右后位测量

rpv right portal vein 右门静脉

RS Reference Spectra 对照谱图

RSR Regular Sinus Rhythm 正常窦性节律

RT Reaction Time 反应时间

Ru Ruthenium 钌（化学元素）

rus recurrent ulcerative stomatitis 复发性溃疡性口炎

RV Residual Volume 残气容积

rw respiratory work 呼吸作功

RWA rapid water additive 快速水添加剂,快速渗水剂

RX Prescription 处方[拉]