Study is double blind clinical trial comparative study of inhalation of chamomile essense versus plasebo on post operative pain reliefe in cesarean surgery.128 women, referred to mashhad Imam Reza Hospital operating room for cesarean surgery randomly devide into 2 groups.Inclusion criteria: The same type of anesthesia (spinal anesthesia) and anesthetic used; 38 to 42 weeks of gestational age; Nulli parous. exclusion criteria:Reluctance to continue participating in the exercises; Use powerful hypnotics or analgesics drugs; Having allergy and breathing problems; History of warfarin
they will undergo spinal anesthesia and cesarean section will be performed.When the post-operative pain starts, and 4, 8, and 12 hours after that, patients will undergo aromatherapy using chamomile essence. patient’s pain score is measured using VAS and quality of pain is measured using McGill questionnaire. then ipatients in the case group will be requested to breathe over a piece of cotton containing 1 drops of the 5 % chamomile essence oil from a distance of 5 cm for 10-20 minutes, then the pain score will be measured again.If the score is > 4, 100 mg of IM Diclofenac will be prescribed.In control group the same procedures will be performed, but instead of the chamomile essence, 1 drops of placebo will be used. The heart rate, blood pressure, nausea, vomiting, dizziness and satisfaction will be recorded before and after the aromatherapy according to the questionnaire. After starting an IV line, patients will be given 500 ml of ringer solution. Then, they will undergo spinal anesthesia