Question: the medical abbreviation that is a lower case s with a line over it stands for
Answer: Abbreviation Meaning s without ( s with a bar over it ) ( from Latin sine ) sacrum symptoms surgery ( though deemed by some as inappropriate ) first heart sound second heart sound third heart sound fourth heart sound S&O salpingo - oophorectomy SA sinoatrial node SAAG serum -- ascites albumin gradient SAB staphylococcal bacteremia spontaneous abortion ( that is , miscarriage ) SAD seasonal affective disorder subacromial decompression SAH subarachnoid hemorrhage SAM systolic anterior motion of the mitral valve SAN sinoatrial node SAPS II