Fig. 4From: Comparative study of analgesia nociception index (ANI) vs. standard pharmacokinetic pattern for guiding intraoperative fentanyl administration among mastectomy patientsIntraoperative systolic and diastolic blood pressure of both groups. Error bar represents 95% CI. # linear mixed model. ANI, Analgesia Nociception Index; Time 0, the beginning of surgeryBack to article page