Efficacy of Continuous S(+)-Ketamine Infusion for Postoperative Pain Control: A Randomized Placebo-Controlled Trial

<div>Morphine consumption during PACU stay and at 4 and 12 h after surgery. 4 h–12 h: from 4 to 12 h after surgery; PACU: postanesthesia care unit; PACU-4 h: from PACU discharge up to 4 h after surgery; PG: placebo group; SG: S(+)-ketamine group.</div>

Anesthesiology Research and Practice

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Figure 3

Figure 3: Efficacy of Continuous S(+)-Ketamine Infusion for Postoperative Pain Control: A Randomized Placebo-Controlled Trial 