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1.
Asian Nurs Res (Korean Soc Nurs Sci) ; 15(5): 279-290, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34775136

RESUMEN

PURPOSE: The recent evidence suggested substantial anxiolytic efficacy of lavender. The aim of this study was to examine the efficacy of lavender for anxiety, depression, and physiological parameters and to elucidate the differential effects of lavender on anxiety and depression by study characteristics. METHODS: A systematic review and meta-analysis was performed following the PRISMA guidelines. We searched PubMed, Embase, Cochrane Library, Web of Science, and Cumulative Index of Nursing and Allied Health Literature databases for randomized controlled trials investigating the efficacy of lavender on anxiety, depression, or physiological parameters in humans. We assessed the risk of bias within studies with the revised Cochrane risk of bias tool for randomized trials. We used random effect model to estimate the average effect and computed bias-corrected standardized mean difference as effect size metric, Hedges' g for all outcomes. RESULTS: Lavender was superior to placebo or no treatment in reducing anxiety (Hedges' g = -0.72, 95% confidence interval [CI] -0.90 to -0.55, p value <.001), depression (Hedges' g = -0.43, 95% CI, -0.59 to -0.27, p value <.001), and systolic blood pressure (Hedges' g = -0.23, 95% CI, -0.41to -0.05, p value = .01). The moderator analysis by meta-regression indicated that route of administration accounted 6.5% (p value = .187) for the heterogeneity in anxiolytic effects, sessions of treatment accounted 13.2% (p value = .055), and participants' health state accounted 8.9% (p value = .131) for the variance in anxiolytic effects. CONCLUSION: Lavender aromatherapy showed substantial effect in reducing anxiety and depression, and sessions of administration increased the anxiolytic effects. The effects on physiological parameters showed small with inconsistent significances and randomized controlled trials on the effect of lavender on depression were scarce. Future trials on depression and physiological parameters are recommended, and increasing the sessions of administration is recommended.


Asunto(s)
Aromaterapia , Lavandula , Ansiedad/terapia , Trastornos de Ansiedad , Depresión/tratamiento farmacológico , Humanos
2.
Asian Nurs Res (Korean Soc Nurs Sci) ; 13(5): 295-305, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31743795

RESUMEN

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' g = -0.65; 95% CI, -0.84 to -0.46) and decreasing systolic blood pressure (g = -0.22; 95% CI, -0.43 to -0.02), heart rate (g = -0.53; 95% CI, -0.74 to -0.32), and salivary cortisol (g = -1.29; 95% CI, -2.23 to -0.35) and CgA (g = -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, -0.37-0.04). 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.


Asunto(s)
Ansiolíticos/uso terapéutico , Trastornos de Ansiedad/terapia , Aromaterapia/métodos , Lavandula , Aceites Volátiles/uso terapéutico , Aceites de Plantas/uso terapéutico , Humanos , Ensayos Clínicos Controlados Aleatorios como Asunto , Resultado del Tratamiento
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