Post-operative vital signs: How often is too often?
210 Background: Current protocol for post-operative patients admitted to medical-surgical/telemetry units from post anesthesia care units states vital signs are taken every 15 minutes for 1 hour, every 30 minutes for 2 hours and then, every 4 hours for 24 hours. To date, published evidence-based research regarding the frequency and duration of vital signs to safely monitor post-operative patients is limited. The goal is to determine best practice in post-operative vital sign monitoring to ensure safe patient care. The purpose of this review is to determine what frequency and duration of vital signs is required to identify a deviation greater than 20% of patient baseline to ensure safe post-operative monitoring of patients. Methods: A total of 742 post-operative patients’ charts were evaluated. A time frame in which vital signs deviated greater than 20% from patient baseline was established from the data collected. A chart was created depicting these results; listing the total deviations by individual vital sign and time frame. Results: Results show blood pressure and heart rate are the vital signs that have the greatest deviation from baseline followed by pulse-oximetry. Temperature deviations are widespread, while changes in respiratory rate are seen within the first hour. When looking at specific percentages, it was noted that 65% of the total patients reviewed had a 20% deviation from their baseline vital signs. Blood pressures made up 50% of those deviations, while heart rates made up 45%. A total of 27% of the deviations occurred 4-8 hours after admission, 13% of deviations occurred 8-12 hours after admission, 9% of deviations occurred 1.5 hours after admission, and 7% of deviations occurred 12-16 hours after admission. Conclusions: Based on these results, the best times to take post-operative vitals to ensure deviations are detected are: every 15 minutes for 30 minutes upon admission, 1.5 hours after admission, 4 hours after admission, and then every 4 hours for 20 hours. Findings indicate vital signs can safely be taken less frequently in post-operative patients admitted to medical-surgical/telemetry units.