ĐÁNH GIÁ HIỆU QUẢ CỦA CHỈ SỐ ANALGESIA NOCICEPTION INDEX (ANI) TRONG THEO DÕI ĐAU TRONG VÀ SAU MỔ Ở NGƯỜI BỆNH PHẪU THUẬT MỞ Ổ BỤNG

Abstract

Objective: To evaluate the correlation between the Analgesia Nociception Index (ANI) and the PRST score during surgery, as well as the Visual Analog Scale (VAS) score during the recovery period after general anesthesia in open abdominal surgery. Subjects and Methods: A total of 60 patients classified as ASA I–II undergoing open abdominal surgery were included in the study. All patients received anesthesia and monitoring according to a standardized protocol. ANI, PRST, and VAS scores were recorded at predefined time points during and after surgery. Results and Conclusion: There was a significant correlation between the ANI and PRST scores intraoperatively, and between ANI and VAS postoperatively. ANI and PRST demonstrated a moderate negative linear correlation with r = –0.402 (r² = 0.129; p < 0.001), and a stronger negative correlation at the time of strong stimulation such as intubation and skin incision with r = –0.511 (r² = 0.261; p < 0.001). From extubation to 60 minutes postoperatively, ANI showed a strong negative correlation with VAS scores (r = –0.517; r² = 0.268; p < 0.001).