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Abstract
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 ylang ylang (Cananga 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.
Figures and Tables
Table 1
Homogeneity Test for Characteristics and Research Variables between Groups
*Fisher's exact test.
BMI=body mass index; RAS antagonists=renin angiotensin system antagonists; CC blockers=Ca channel blockers; HRV=heart rate variability; PWV=pulse wave velocity; AIx=augmentation index.
Etc.: RAS antagonists+β-blocker, RAS antagonists+diuretics, β-blocker+CC blockers, diuretics, RAS antagonists+CC blockers+diuretics; LF norm: sympathetic nerve system activity; HF norm: parasympathetic nerve system activity.
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