Effect of Intraoperative Low-Dose Esketamine on Postoperative High-Sensitivity Troponin T in Elderly Patients Undergoing Ivor Lewis Esophagectomy.

Although the incidence of myocardial injury within 2 days postoperatively (11.4% vs 22.9%, P = 0.205) and perioperative severe arrhythmias (2.9% vs 11.4%, P = 0.164) was lower in Group K than in Group C, the differences were not statistically significant.

Compared to the control group, Group K indicated more stable hemodynamics.

Among postoperative complications, the incidence of dreaming was higher in Group K, with no significant differences in other complications.

For postoperative pain, Group K had lower Numerical Rating Scale (Numerical Rating Scale) scores at PACU discharge and on postoperative day 1 to day 3.