Table 3 Analysis of Postoperative Outcomes and influencing factors in KOA patients

Relationship between requirement for rescue analgesia and preoperative VAS score on movement

The regression coefficient (B) = 1.107, p = 0.014, odds ratio (OR) = 3.027

Number of patients requiring rescue analgesia (case,%)

13 (12.38%)

Mean dose of remifentanil(μg)

773.96 ± 72.53

Correlation between nausea and vomiting and remifentanil dose

p > 0.107

Mean length of hospital stay (days)

3.095 ± 0.354

Proportion of patients requiring blood transfusion (cases, %)

5 (4.76%)

Number of patients admitted to the intensive care unit (ICU) (case,%)

2 (1.90%)

Number of patients with hypothermia (example,%)

1 (0.95%)