Table 3.

Operating Room Vital Signs, Labs, and Resuscitation

Variable	Control (n=559)	QI (n=427)	p Value
OR duration, min, median (IQR)	109 (73, 162)	135 (94, 192)	<0.001
First documented vital sign and lab, median (IQR)
Temperature, °F	96.6 (95.4, 97.7)	97.0 (96.1, 98.1)	<0.001
Systolic blood pressure, mmHg	120 (100, 140)	118 (97, 139)	0.279
Heart rate, bpm	98 (85, 110)	96 (82, 112)	0.369
pH	7.30 (7.22, 7.36)	7.31 (7.24, 7.38)	0.044
Lactic acid, mmol/L	2.8 (1.8, 4.3)	2.8 (1.7, 4.6)	0.983
Base excess, mmol/L	−5 (−8, −2)	−4 (−7, −1)	0.079
Resuscitation , median (IQR)
Crystalloid, mL	1500 (1000, 2000)	1200 (800, 1700)	<0.001
Colloid, mL	500 (0, 1000)	500 (0, 1000)	0.068
Red blood cells, units	1 (0, 4)	1 (0, 5)	0.853
Fresh frozen plasma, units	0 (0, 4)	0 (0, 4)	0.561
Platelets, units	0 (0, 6)	0 (0, 6)	0.197
Estimated blood loss, mL	350 (100, 1000)	400 (150, 1000)	0.430
Last documented vital signs and labs, median (IQR)
Temperature, °F	96.8 (95.5, 97.9)	97.2, (96.1, 98.2)	<0.001
Systolic blood pressure, mmHg	125 (115, 140)	128 (115, 142)	0.105
Heart rate, bpm	91 (80, 100)	90 (79, 105)	0.534
pH	7.33 (7.29, 7.37)	7.34 (7.30, 7.39)	0.003
Lactic acid, mmol/L	3.2 (2.0, 4.9)	3.3 (1.8, 5.0)	0.823
Base excess, mmol/L	−4 (−6, −2)	−4 (−6, −2)	0.036

QI, quality improvement; OR, operating room; F, Fahrenheit; TXA, tranexamic acid