BACKGROUND: Conscious patients admitted to intensive care units (ICUs) suffer from pain for various reasons, which can affect their recovery process. OBJECTIVE: The present study compared the effects of aromatherapy with Citrus aurantium and lavender essential oils against placebo for reducing pain in conscious intensive care patients. DESIGN, SETTING, PARTICIPANTS AND INTERVENTIONS: This study was a parallel randomized placebo-controlled trial. The ICUs of two educational hospitals in Kerman in Southeastern Iran were the study setting. One hundred and fifty conscious intensive care patients were randomly divided into three groups using a stratified block randomization method. Two groups received aromatherapy with essential oils: one with lavender and the other with C. aurantium; these patients received a 30-minute therapy session using their assigned essential oil on the second day of their intensive care stay. The placebo group used 5 drops of normal saline instead of essential oil during their session. MAIN OUTCOME MEASURES: Patient's pain was assessed using a visual analog scale before the aromatherapy intervention, as well as immediately after and one and three hours after intervention. RESULTS: The mean pain score of the lavender group was 40.01 before the aromatherapy intervention and fell to 39.40, 30.60 and 23.68 immediately after the intervention, and at hour one and three post-intervention, respectively. The mean pain score of the C. aurantium group was 45.48 before the intervention and was reduced to 32.34 at three hours after the intervention. The mean pain of the placebo group decreased from 42.80 before the intervention to 35.20 at three hours after the intervention. Pain scores of all groups decreased during the study (P < 0.001). The mean pain of the lavender group was significantly lower than that of the placebo group at three hours after the intervention. CONCLUSION: The results of this study showed that aromatherapy with lavender essential oil reduced pain in conscious ICU patients. Our data could not justify the use of C. aurantium for reducing pain in this population. TRIAL REGISTRATION No. IRCT20170116031972N9 (https://en.irct.ir/trial/40827).
Citrus ; Critical Care ; Humans ; Intensive Care Units ; Lavandula ; Oils, Volatile ; Pain/drug therapy* ; Plant Oils

PURPOSE: Although lavender is purported to possess anxiolytic and sedative properties and is often recommended for relieving anxiety, the efficacy of lavender has not been well established. Thus, this review aimed to evaluate the anxiolytic effects of lavender aromatherapy.METHODS: Ten data bases were searched for studies published between 2000 and 2018. Randomized controlled trials investigating the anxiolytic effects of lavender aromatherapy with any type of application for persons with or without clinical anxiety were included. The outcome variables included self-rated anxiety, vital signs, and salivary cortisol and chromogranin A (CgA) levels. In the meta-analysis, standardized mean difference and 95% confidence interval were calculated as effect measures by applying the random effect model and inverse variance method.RESULTS: Twenty-two trials met our inclusion criteria. Lavender aromatherapy was found to have favorable effects in relieving anxiety (Hedges' ĝ = −0.65; 95% CI, −0.84 to −0.46) and decreasing systolic blood pressure (ĝ = −0.22; 95% CI, −0.43 to −0.02), heart rate (ĝ = −0.53; 95% CI, −0.74 to −0.32), and salivary cortisol (ĝ = −1.29; 95% CI, −2.23 to −0.35) and CgA (ĝ = −2.29; 95% CI, −3.24 to −1.34) levels. However, the meta-analysis did not reveal any significant effects of lavender on diastolic blood pressure (effect size: −0.17; 95% CI, −0.37e0.04).CONCLUSION: Aromatherapy using lavender oil might have favorable effects on anxiety and its physiological manifestations. Future studies are recommended with an emphasis on methodological quality. In nursing practice, it is suggested that lavender aromatherapy be included in programs intended to manage anxiety in patients across diverse healthcare settings.
Anti-Anxiety Agents ; Anxiety ; Aromatherapy ; Blood Pressure ; Chromogranin A ; Delivery of Health Care ; Heart Rate ; Humans ; Hydrocortisone ; Lavandula ; Methods ; Nursing ; Vital Signs

PURPOSE: The purpose of this study is to identify the effects of aromatherapy on agitation in patients with dementia using a meta-analysis and systemic literature review. METHODS: The EMBASE, CINAHL, MEDLINE, and other databases were searched up to November 2017. RESULTS: Of 419 publications identified, 12 met inclusion criteria, and 9 studies were used to estimate the effect size of aromatherapy. A total of 837 participants across all studies were included. The commonly applied methods were massage (50%), type of oil lavender (75%), and instrument Cohen-Mansfield Agitation Inventory (75%). A medium effect size of aromatherapy on agitation was identified (d=−0.56, I2=65.0%, p=.001). The massage group has lower effect size than the other group (d=−0.98, I2=0.0%, p=.001). CONCLUSION: Aromatherapy appears to be effective in improving agitation in patients with dementia. However, further studies for home-dwelling patients with dementia and with different types of aroma oil should be conducted in the future. In addition, research with well-designed are needed to assess the effects or aromatherapy on agitation.
Aromatherapy ; Dementia ; Dihydroergotamine ; Humans ; Lavandula ; Massage ; Psychomotor Agitation

PURPOSE: The aim of this study was to examine the effects of aroma hand massage on stress, fatigue, and sleep in sophomore nursing students. METHODS: This study was a quasi-experimental design with a nonequivalent control group and a pre-post test was used. Thirty-seven sophomore nursing students were recruited. The experimental group (n=18) underwent 40 minutes aroma hand massage which was provided by the research assistant. The research assistant was trained with a video clip for aroma hand massage that was developed by Korea Aroma Association. Aroma oil contained lavender essential oil and sweet orange oil mixed with a jojoba oil base. The control group (n=19) did not receive any other treatments related aroma and massage. RESULTS: Significant improvements were exhibited in scores for stress (t=−2.61, p=.013) and fatigue in the experimental group (t=−2.05, p=.047) compared to the control group. However, differences in sleep between two groups were not statistically significant (t=1.23, p=.277) between two groups. CONCLUSION: The results of this study suggest that aroma hand massage could be useful to decrease stress and fatigue levels for sophomore nursing students. Therefore, results of this study can be used as a basis of health care programs for reducing stress of nursing students.
Aromatherapy ; Citrus sinensis ; Delivery of Health Care ; Evaluation Studies as Topic ; Fatigue ; Hand ; Humans ; Korea ; Lavandula ; Massage ; Nursing ; Students, Nursing

OBJECTIVES: The present systematic review was conducted to compare the effect of lavender on the quality of sleep, sexual desire, and vasomotor, psychological and physical symptoms among menopausal and elderly women. METHODS: There were five electronic databases which selected to search respective articles which included were Scopus, PubMed, Web of Science, Google Scholar, and the Cochrane Library without any language restriction since the study inception to March 10, 2018. The quality of studies was assessed in accordance with a jaded scale. RESULTS: According to three trials, the lavender as utilized in a capsule form or aromatherapy could significantly improve the measured Pittsburgh Sleep Quality Index score (P < 0.05) in the menopausal and elderly women. The aromatherapy with lavender improved sexual function (P < 0.001), depression (P < 0.001), anxiety (P < 0.001), and physical (P < 0.001) symptoms. Based on a trial, 66.7%, 70.0%, and 53.3% of subjects reported feelings of relaxation, happiness, and cleanness effects of having used lavender respectively. CONCLUSIONS: The results suggested the effectiveness of the use of lavender either in capsule form or aromatherapy on the improved quality of sleep, depression, anxiety, sexual desire, and psychological and physical symptoms. These results, however, should be interpreted with caution considering the limitations of the study.
Aged ; Anxiety ; Aromatherapy ; Depression ; Female ; Happiness ; Hot Flashes ; Humans ; Lavandula ; Libido ; Menopause ; Relaxation

PURPOSE: The purpose of this study was to examine the effects of aromatherapy on stress responses, autonomic nervous system (ANS) activity, and blood pressure in patients hospitalized to receive coronary angiography (CAG). METHODS: A non-equivalent control group with a pretestposttest design was used. The subjects were patients admitted to the day angiography room to receive CAG at E University Hospital (34 in the experimental group and 30 in the control group). The experimental group treatment was inhalation of the aroma oil blended with lavender, ylang-ylang, and neroli at a ratio of 4:2:1 twice before and after CAG. The measurements of stress index, ANS activity, and blood pressure were performed 5 times as follows: at admission, at pre-CAG after treatment I, at post-CAG, 2 hours after treatment II, and 4 hours after treatment II. The data were analyzed using the Mann-Whitney U Test and repeated-measures analysis of variance. RESULTS: Significant interactions in the high frequency of ANS (F=5.58, p=.005) were observed between group and time. Stress index (z=2.14, p=.016), systolic blood pressure (z=4.14, p < .005), and diastolic blood pressure (z=3.28, p=.001) were significantly different between the experimental and control groups after 4 hours of treatment II. CONCLUSION: The findings showed that aromatherapy was not effective before CAG, but was effective after CAG. Therefore, aromatherapy can be used as a nursing intervention for patients receiving CAG.
Angiography ; Aromatherapy ; Autonomic Nervous System ; Blood Pressure ; Cananga ; Coronary Angiography ; Humans ; Inhalation ; Lavandula ; Nursing

OBJECTIVES: The main objectives of this study were to verify the antibacterial activity of two essential oils, lavender and peppermint, against dental caries and to review their synergistic effect when used in combination. Our results provide basic data for the evaluation of the use of these two substances towards the prevention and cure of dental caries. METHODS: The sample solutions of lavender and peppermint oils were prepared in three different concentrations (30%, 50%, and 70% (v/v)) by diluting them with third-distilled water and Tween 20. Streptococcus mutans was selected as the bacterial species for testing. The disk diffusion method was used to measure the antibacterial activity of the sample solutions. For generating growth curves and measuring the number of clusters of the bacterial, the liquid medium-dilution method was used; the absorbance of the medium was measured at 600 nm after 3, 6, 12 and 24 hours. RESULTS: When the antibacterial activity of the oils was tested via the disk diffusion method, the activity improved with increasing concentrations of all the sample solutions of peppermint, lavender, and the blend, but there was no significant difference between them with respect to the type of oil. In the growth curves of S. mutans, growth inhibition was observed after 12 hours. The inhibitory effect of 30% lavender oil on growth was 64.9% and 80.1% after 12 and 24 hours of treatment, respectively whereas that of peppermint oil was 71.3% and 80.1% after 12 and 24 hours of treatment, respectively. The inhibitory effect of the blended oil was 71.9% and 81.0% after 12 and 24 hours of treatment, respectively. CONCLUSIONS: Further research is still required in order to determine the efficacy of lavender and peppermint oils, as well as other essential oils, for wider use in preventing dental caries.
Dental Caries ; Diffusion ; Lavandula ; Mentha piperita ; Methods ; Oils ; Oils, Volatile ; Polysorbates ; Streptococcus mutans ; Streptococcus ; Water

Rapid eye movement (REM) sleep has an essential role in the process of learning and memory in the hippocampus. It has been reported that linalool, a major component of Lavandula angustifolia, has antioxidant, anti-inflammatory, and neuroprotective effects, along with other effects. However, the effect of linalool on the cognitive impairment and behavioral alterations that are induced by REM-sleep deprivation has not yet been elucidated. Several studies have reported that REM-sleep deprivation-induced memory deficits provide a well-known model of behavioral alterations. In the present study, we examined whether linalool elicited an anti-stress effect, reversing the behavioral alterations observed following REM-sleep deprivation in mice. Furthermore, we investigated the underlying mechanism of the effect of linalool. Spatial memory and learning memory were assessed through Y maze and passive avoidance tests, respectively, and the forced swimming test was used to evaluate anti-stress activity. The mechanisms through which linalool improves memory loss and behavioral alterations in sleep-deprived mice appeared to be through an increase in the serotonin levels. Linalool significantly ameliorated the spatial and learning memory deficits, and stress activity observed in sleep-deprived animals. Moreover, linalool led to serotonin release, and cortisol level reduction. Our findings suggest that linalool has beneficial effects on the memory loss and behavioral alterations induced by REM-sleep deprivation through the regulation of serotonin levels.
Animals ; Cognition Disorders ; Hippocampus ; Hydrocortisone ; Lavandula ; Learning ; Memory Disorders* ; Memory* ; Mice ; Neuroprotective Agents ; Physical Exertion ; Serotonin ; Sleep, REM ; Spatial Memory

OBJECTIVES: The aim of the present systematic review and meta-analysis is the exploration of the potential evidence of the effectiveness of aromatherapy products on the sexual function of menopausal women. METHODS: From inception to December 2017, the search process was performed using the MEDLINE and Scopus databases and the Cochrane Library regarding the trials on the effectiveness of herbal-medicine aromatherapy on the sexual function of menopausal women. RESULTS: Three of the trials comprise suitable data for inclusion in the meta-analysis. According to the meta-analysis, it is possible to improve the standardized mean difference (SMD) of the sexual desire up to 0.56 in the aromatherapy group compared with the control group (SMD = 0.56; P < 0.001; heterogeneity; I² = 42%; P = 0.141). According to one of the trials, the serum-estrogen level of two different doses did not change in the neroli oil inhalation group compared with the almond-oil group. CONCLUSIONS: Both aromatherapy with neroli oil or lavender (monopreparation) and combined-oil aromatherapy with lavender, fennel, geranium, and rose significantly improved human sexual function; however, a significant change of the serum-estrogen level was not detected. The findings of the present review should be presented cautiously because of the corresponding limitations such as the lack of a standardized tool, the lack of intention-to-treat reporting, the low study amount, and the short-term follow-up.
Aromatherapy ; Female ; Foeniculum ; Follow-Up Studies ; Geranium ; Humans ; Inhalation ; Lavandula ; Menopause ; Population Characteristics ; Sexuality

OBJECTIVES: Some conventional medications used to treat insomnia, such as benzodiazepine, non-benzodiazepine, and hormone therapy, are associated with side effects. Therefore, there is a growing interest in the use of herbal medicine. The aim of this systematic review is to assess the effects herbal medicines have on sleep disorders of peri- and postmenopausal women. METHODS: Three databases were searched including MEDLINE, Scopus, and the Cochrane Library from inception to March 2018. RESULTS: Six trials assessed the effect of soy on sleep disorders. Forrest plot for 2 studies showed that the standardized mean difference (SMD) of the sleep problems was lower in the soy group than the placebo group (SMD = −0.996; P < 0.001; 95% confidence interval, −1.42 to −0.563). Three trials showed soy had no significant effect on sleep disorders and one study showed a positive effect on sleep disorders. Accordingly, it is difficult to reach a definite conclusion regarding the effects of soy on sleep disorders based on these findings. According to a trial, significant beneficial effect associated with taking Schisandra chinensis. Findings suggested that some herbal medicines like red clover, lavender combined with bitter orange and pin bark extract had attenuating effects on sleep disorders. After intake of 530 mg of valerian twice a day for one month, statistically significant effects were observed regarding the quality of sleep of postmenopausal women. CONCLUSIONS: The present systematic review and meta-analysis found inadequate evidence to draw conclusions regarding the effectiveness of herbal medications, especially soy.
Benzodiazepines ; Citrus sinensis ; Female ; Herbal Medicine ; Humans ; Lavandula ; Postmenopause ; Schisandra ; Sleep Initiation and Maintenance Disorders ; Sleep Wake Disorders ; Trifolium ; Valerian