This study determining effect of lavender aromatherapy on the pain level after cesarean section among women referred to Al-Zahra Hospital in Rasht during 2016- 2017.This study is a double blind clinical trial on pregnant women. Inclusion criteria: pain VAS score higher than 3; using spinal anesthesia; use of a type of anesthetic(bupivacaine 0.05); no concurrent operation; duration of operation less than 90 min; full term pregnancy; no history of allergies to medicinal plants, anosmia, migraines, chronic headaches, coagulation disorders, polyhydramnios, diabetes, preeclampsia, twin pregnancy.
Exclusion criteria: nausea, vomiting; allergy or absence of patients satisfaction after first dose of aromatherapy. The Samples was selected from mothers who will refer to the hospital for C-section surgery will be divided, based on the table of randomized block design, into two groups of A and B, each composed of 55 people. The experimental group will be treated with Lavender essence in three phases, and the control group will receive placebo with identical arrangements. The pain of patients before and after intervention will be evaluated by VAS. The first evaluation by VAS will be performed 4 hours after the surgery. In the experimental group, 5 drops (100%) lavender essence will be applied on a cotton swab and the swab will be placed for 3 minutes in the oxygen mask ; 30 minutes after removing the swab, a second pain evaluation will be performed. Second and third phases of test will be similar to the first phase (6 and 12 hours after the surgery).