• Hossein Bagheri, Tahereh Salmani, Javad Nourian, Seyed Mohammad Mirrezaie, Ali Abbasi, Abbas Mardani, and Zeljko Vlaisavljevic.
• Department of Nursing, School of Nursing and Midwifery, Shahroud University of Medical Sciences, Shahroud, Iran.
• J. Perianesth. Nurs. 2020 Dec 1; 35 (6): 642-648.

PurposeOne of the main problems after inguinal hernia surgery is postoperative pain. The purpose of this study was to examine the effects of aromatherapy with lavender oil inhalation on postoperative pain after inguinal hernia surgery.DesignA randomized controlled design was used.MethodsNinety participants were selected and assigned to two groups: the intervention group (n = 45) and the control group (n = 45). The patients in the intervention group inhaled four drops of 2% lavender essential oil with oxygen for 20 minutes. The patients in the control group inhaled only oxygen. Postoperative pain was measured 0 minutes after being transferred to the surgery ward, and then 2 hours, 6 hours, and 24 hours after surgery using the visual analog scale.FindingsIn comparison to the control group, levels of pain severity in the intervention group were significantly lower in four stages of measurements (P < .001). Also, in all stages, measurements showed significant statistical differences within the groups (P < .001).ConclusionsAromatherapy with lavender essential oil helped decrease postoperative pain after inguinal hernia surgery.Copyright © 2020 American Society of PeriAnesthesia Nurses. Published by Elsevier Inc. All rights reserved.

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