Effect of tourniquet use on blood loss, pain, functional recovery, and complications in robot-assisted total knee arthroplasty: a prospective, double-blinded, randomized controlled trial

Table 2 Perioperative blood loss, transfusion, and surgical time in the two patient groups

Variable	Tourniquet group (n = 14)	Non-tourniquet group (n = 14)	P*
Surgical time (min)	95 (80, 101.25)	107 (93.75, 135)	0.005
Total blood loss (ml)	738.57 (276.158)	866.85 (243.422)	0.061
Intraoperative blood loss (ml)	134.17 (57.191)	308.67 (63.122)	< 0.001
Drainage volume (ml)	145 (100, 180)	95 (23.75, 210)	0.071
Hidden blood loss (ml)	511.15 (183.322)	366.00 (171.281)	0.002
Transfusion (n)	0	0	N/A

Values are n, mean (standard deviation) or median (interquartile range), unless otherwise noted
^* Based on Student’s t test or the Mann–Whitney test (continuous variables) or Fisher’s exact test (categorical variables)

ISSN: 1749-799X