Effects of Aromatherapy on Changes in the Autonomic Nervous System, Aortic Pulse Wave Velocity and Aortic Augmentation Index in Patients with Essential Hypertension
J Korean Acad Nurs. 2010 Oct;40(5):705-13. doi: 10.4040/jkan.2010.40.5.705.
[Article in Korean]
Cha JH(1), Lee SH, Yoo YS.
(1)Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea.
PURPOSE: To investigate the effectiveness of aromatherapy on blood pressure, heart rate variability, aortic pulse wave velocity and the aortic augmentation index of essential hypertensive patients.
METHODS: Using a coin toss, 22 participants were assigned to the experimental group and 20 to the control. The experimental group was given a blend of oils of lemon (Citrus limonum), lavender (Lavandula angustifolia), and lang ylang (Caning odorata) which were prepared in the ratio of 2:2:1, respectively. The control group was given an artificial lemon fragrance of Limonene (35 cc) and Citral (15 cc) mixture. The experiment, inhalation, was conducted for 3 weeks (2 min per inhalation, 2 times per day) to both groups.
RESULTS: There was a noticeable difference in systolic blood pressure between the groups (p=.001), however the difference in diastolic blood pressure between the two groups was not significant. There was a notable difference in sympathetic nerve system activity of heart rate variability (p=.047). However, the differences in aortic pulse wave velocity or the aortic augmentation index were not significant.
CONCLUSION: Aromatherapy is effective in lowering systolic blood pressure and sympathetic nerve system activity.
PMID: 21157172 [PubMed - indexed for MEDLINE]