A single blind clinical trial will be done in Intensive care unit .
Inclusion criteria: age : between 20 – 80; Sex : Male and Female; GCS: higher than 8 and equal to 8; The Base of Vital sign is recorded when patient admitted to ICU then vital sign is measured and vital sign is recorded for one hour. Vital sign : Blood pressure , respiratory rate , pulse rate. Exclusion criteria: a history of chronic respiratory disease; history of lack smell sensation; history of respiratory allergy; GCS < 8.
Patient is divided two group 32 person. Group 1: Aromatherapy; Group 2: Midazolam. The data collection will be done with the completation of questionnaire.
The record of vital sign (heart rate , systolic BP , Diastolic Blood pressure , respiratory rate). Another data collection is demographic questionnaire consist of age , sex , height and weight . for doing Aromatherapy , 2 drop Essential oil 2% of Lavandula that is prepared by Danesh Bonyan E'jaz Kavir Shargh of iran(Shahrood) company, 2 drop of Essential oil of Lavandula is poured on patch and the patch is connected to inside Oxygen mask and the patient inhale for 20 minutes and in Midazolam group is injected 0.05 mg/kg intravenous .
Vital sign is measured by monitor unit in 5 , 10 , 15 , 20 , 30 , 60 minutes after intervention.