On average, blood pressure taken in the O.R. was significantly higher than blood pressure taken during pre-surgical testing or while in
a preoperative holding area.
Blood pressure was not found to be significantly different when taken in either the pre-surgical clinic or
the preoperative holding area.
Patients had their blood pressure taken at three points: at a pre-surgical testing clinic one to 30 days before surgery; in
a preoperative holding area the day of surgery; and immediately upon entering the O.R. Comparisons were made between blood pressures taken at each phase of care.