IRCT20170417033491N2 IRCT 2018-08-09 Gerash University of Medical Sciences Study the effect of Bupivacaine 0.5% , Lidocaine 5%, Pethidine , Lidocaine 5% & intratecal on the incidence of decrease blood pressure, nausea and vomiting for elective caesarean section Comparison of the effect of Bupivacaine 0.5% , Lidocaine 5% , Pethidine , Lidocaine 5% & intratecal on the incidence of decrease blood pressure , nausea and vometing for elective caesarean section 2017-10-04 anticipated 75 Complete https://irct.ir/trial/25819 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: Simple allocation by Statistical software, Blinding description: The patients will be blind to the kind of intervention. 3 Caesarean Section. Intervention 1: Patients in group one received lidocaine 5% - pethedine (60 mg lidocaine 5% -15 mg pethedine as local anesthetic. Intervention 2: Patients in group two received 75 mg lidocaine 5% as local anesthetic. Intervention 3: Patients in group three received 15 bupivacaine 0.5 % as local anesthetic. Yes - There is a plan to make this available What will be shared: Data will be coded without the names of the participants. When: Start the access period 6 months after publishing the results To whom: The published article for this study will be accessible to everyone, but other information will only be available to the sponsoring organization. Conditions: The published paper for this study will be accessible to everyone, but other information will only be available to the sponsoring organization Where to obtain: Visit the Research Deputy of the Gerash University of Medical Sciences. How to obtain: Visit the Research Deputy of the University of Medical Sciences. The vice chancellor will refer the applicant to the researcher if the applicant agrees. Comments: