Lavender aromatherapy: Its effect on preoperative anxiety and propofol requirement for anesthesia

Abstract

Background & objective: Preoperative anxiety is a natural human psychology, and the physicians usually prescribe tranquillizers to allay the anxiety of their anxiety. Various other means have also been employed for this purpose. We aimed to investigate the impact of lavender aromatherapy on preoperative anxiety and propofol requirement at induction of anesthesia. Methodology: A total of 108 female patients were enrolled in the study, and their anxiety levels were evaluated using the Visual Analogue Scale (VAS) at three different time points. Patients were randomly divided into two groups. Group A (Lavender Group) patients were given lavender aromatherapy via a cotton strip infused with two drops of 100% pure lavender essential oil, while the patients in Group B (Control Group) had no aromatherapy. Results: The results showed that the lavender aromatherapy significantly reduced anxiety in Group A (P < 0.001) compared to Group B, and the mean differences of VAS scores for all anxiety assessments were also significantly reduced in Group A (P < 0.000). In addition, the mean total amount of propofol required was significantly less in Group A than in Group B (118.46 ± 40.01 vs 140.38 ± 35.29 mg; P = 0.003), while the mean duration to reach loss of consciousness was similar in both groups. Conclusion: The findings of our study suggest that lavender aromatherapy can be a simple, safe, and cost-effective way to reduce preoperative anxiety and decrease the amount of propofol required for the induction of anesthesia. Therefore, the use of lavender aromatherapy may be a valuable addition to the preoperative care of patients undergoing elective surgeries. Abbreviations: APAIS-  Amsterdam Preoperative and Information Scale; LOC- Loss of Consciousness; OT- Operation Theatre; OR- Operating Room; STAI- State-Trait Anxiety Inventory; VAS- Visual Analogue Scale Key words: Aromatherapy; Benzodiazepines; Lavender; Anxiety, Preoperative; Propofol; Anxiety / therapy; Anxiety Disorders Citation: Rahman RA, Vasu Dewan MM, Sayed Masri SNN, Mokhtar MN, Abdullah FH, Md Nor N. Lavender aromatherapy: Its effect on preoperative anxiety and propofol requirement for anesthesia. Anaesth. pain intensive care 2024;28(1):20−25; DOI: 10.35975/apic.v28i1.2376 Received: April 26, 2023; Reviewed: November 22, 2023; Accepted: November 22, 2023