Finding the optimal control level of intraoperative blood pressure in no tourniquet primary total knee arthroplasty combine with tranexamic acid: a retrospective cohort study which supports the enhanced recovery strategy

Table 3 Complications

Variable	No. of Patients			P value*
Variable	Group A (N = 82)	Group B (N = 105)	Group C (N = 91)	A vs. B vs. C	A vs. B	A vs. C	B vs. C
Postoperative hypotension (N, %)^a	8 (9.8)	1 (1.0)	1 (1.1)	0.002	0.005	0.01	0.919
Deep vein thrombosis (N, %)^a	0	0	0	NA
Pulmonary embolism (N, %)^a	0	0	0	NA
Superficial infection (N, %)^a	0	0	0	NA
Deep prosthetic infection (N, %)^a	0	0	0	NA
Hematomas (N, %)^a	0	0	1 (1.1)	0.357	NA	0.341	0.282
Wound secretion (N, %)^a	1 (1.2)	1 (1.0)	1 (1.1)	0.984	0.86	0.941	0.919
Myocardial infarction (N, %)^a	0	0	0	NA
Stroke (N, %)^a	1 (1.2)	0	0	0.301	0.257	0.291	NA
Acute renal failure (N, %)^a	0	0	0	NA
30-day mortality (N, %)^a	0	0	0	NA
90-day readmission (N, %)^a	0	0	0	NA

^aData are presented as number of patients with percentage
*P values were calculated using the Pearson chi-square test or the Fisher exact test

ISSN: 1749-799X