title: [The effects of the inhalation method using essential oils on blood pressure and stress responses of clients with essential hypertension].
abstract: OBJECTIVE
  The purpose of this study was to identify the effects of aromatherapy on blood pressure and stress responses of clients with essential hypertension.
  
  
  METHODS
  There were fifty-two subjects divided into an essential oil group, placebo group, and control group by random assignment. The application of aromatherapy was the inhalation method of blending oils with lavender, ylangylang, and bergamot once daily for 4 weeks. To evaluate the effects of aromatherapy, blood pressure and pulse were measured two times a week and serum cortisol levels, catecholamine levels, subjective stress, and state anxiety were measured before and after treatment in the three groups. Data was analyzed by repeated measures of ANOVA, one-way ANOVA, and chi(2)-test using the SPSS 10.0 program.
  
  
  RESULTS
  The blood pressure, pulse, subjective stress, state anxiety, and serum cortisol levels among the three groups were significantly statistically different. The differences of catecholamine among the three groups were not significant statistically.
  
  
  CONCLUSIONS
  The results suggest that the inhalation method using essential oils can be considered an effective nursing intervention that reduces psychological stress responses and serum cortisol levels, as well as the blood pressure of clients with essential hypertension.
authors.affiliation: Department of Nursing, Geochang Provincial College, Geochang-gun, Gyungnam, Korea. jhhwang@kc.ac.kr
authors.forename: Jin-Hee
authors.initials: JH
authors.lastname: Hwang
mesh_terms: D000328:Adult; D000368:Aged; D019341:Aromatherapy; D015415:Biomarkers / Q000097:blood; D001794:Blood Pressure; D054362:Cananga; D005260:Female; D006801:Humans; D006973:Hypertension / Q000451:nursing / Q000628:therapy*; D027523:Lavandula; D008297:Male; D008875:Middle Aged; D009822:Oils, Volatile / Q000627:therapeutic use*; D010938:Plant Oils / Q000627:therapeutic use; D013315:Stress, Psychological / Q000628:therapy*
chemical_list: D015415:Biomarkers; D009822:Oils, Volatile; D010938:Plant Oils; C068336:bergamot oil; C045718:lavender oil