Which among the following abbreviations is used to express a postoperative status?

The abbreviation "s/p" stands for "status post," which is commonly used in medical documentation to indicate that a patient has undergone a particular procedure or surgery. When a clinician notes the s/p status of a patient, they are typically referring to the condition or state of the patient following an operation. It serves to provide essential context regarding the patient's medical history and the care needed moving forward, highlighting the relationship between prior surgical interventions and the patient's present condition.

In contrast, the other abbreviations do not relate to postoperative status. "SBP" refers to systolic blood pressure, a vital sign measurement, "STEMI" denotes ST-Elevation Myocardial Infarction, which is a type of heart attack, and "R/O" stands for "rule out," commonly used to suggest that a condition is being considered for diagnosis but not confirmed. Thus, "s/p" is specifically the appropriate choice for indicating a patient's status after surgery.