Fig. 2. Hemodynamic variables for record-keeping versus Non–Record-keeping Periods of Anesthesia Information Management System Workstation Usage. NR = non–record-keeping periods; R = record-keeping periods; Hypotension = proportion of cases with any 5-min epoch with average mean arterial pressure (MAP) less than 60 mmHg; Hypertension = proportion of cases with any 5-min epoch with average MAP greater than 120 mmHg; Tachycardia = proportion of cases with any 15-s epoch with pulse rate greater than 100 beats/min; top bars show upper limit of 95% CI around mean, except for pulse rate SD box plot, which shows median, interquartile range, and outliers. Mean is indicated by diamond .