• Masoomeh Noruzi Zamenjani, Moloud Farmahini Farahani, Leila Amirmohseni, Yasaman Pourandish, Soheila Shamsikhani, Alireza Heydari, and Mehdi Harorani.
• Department of Nursing, School of Nursing, Arak University of Medical Sciences, Arak, Iran.
• J. Perianesth. Nurs. 2021 Apr 1; 36 (2): 147-152.

PurposeThis study compares the effects of inhalation aromatherapy using essential oils of sweet orange and damask rose on postoperative abdominal pain.DesignA randomized three-arm controlled trial.MethodsIn this randomized double-blinded, and parallel-group controlled trial, a total of 120 patients who underwent open abdominal surgeries were enrolled using a sequential sampling method. Participants were then randomly assigned to three groups of sweet orange, damask rose, and placebo (distilled water) using the permuted block randomization. When the patients regained full consciousness, a clean gauze impregnated with four drops of either distilled water or essential oils of sweet orange or damask rose were attached to the collar of the patients, and they were asked to inhale the aroma through normal breathing for 30 minutes. Abdominal pain severity was recorded using the visual analog scale at four time points including before the intervention (baseline) and 4, 8, and 12 hours after the intervention.FindingsPain reduction after sweet orange inhalation was significantly greater than placebo (at 8 and 12 hours after the intervention) and damask rose (at 12 hours after the intervention). The differences in the mean score of pain severity between all before-and-after observations were statistically significant in the three groups, except in the placebo group between the baseline score of pain severity and the pain severity score at 4 hours after the intervention.ConclusionsInhalation aromatherapy using sweet orange seems to be more effective than the damask rose in reducing pain severity after open abdominal surgeries.Copyright © 2020 American Society of PeriAnesthesia Nurses. Published by Elsevier Inc. All rights reserved.

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