56 Parturients, aged 18-40 year, undergoing elective CS were randomly assigned to receive sequential intrathecal injection of fentanyl and hyperbaric bupivacaine at the same rate (normal sequential) NS or a rapid intrathecal injection of fentanyl followed by slow injection of hyperbaric bupivacaine (rapid sequential) RS. Time of first rescue analgesia, Dose of rescue analgesics, degree of postoperative pain, incidence of hypotension, hypotension duration, ephedrine dose, spinal anaesthesia related complications and failed block were recorded.

56 ASA physical status I, II Parturients, aged 18-40 year, undergoing elective CS were randomly assigned to receive sequential intrathecal injection of fentanyl and hyperbaric bupivacaine at the same rate through a 5ml syringe each (NS (normal sequential), n 28) or a rapid intrathecal injection of fentanyl through an insuline syringe followed by slow injection of hyperbaric bupivacaine through a 5ml syringe RS (rapid sequential), n 28). Onset of sensory block (T6 level), highest level of sensory block, time of first rescue analgesia, Dose of rescue analgesics, degree of postoperative pain by VAS 6H postoperative, Onset of motor block (Bromage scale0>3), duration of motor block (return to Bromage 0), incidence of hypotension, hypotension duration, ephedrine dose, spinal anaesthesia related complications as nausea, vomiting, pruritis, shivering and failed block were recorded.

Inclusion Criteria:

• ASA I, II
• Parturients aged from 18-40 years old
• scheduled for elective CS

Exclusion Criteria:

• parturients with complicated pregnancy as (preeclampsia, pregnancy induced HTN, gestational Diabetes, abnormal placenta (placenta previa), multiple gestation),
• BMI greater than 35 or less than 22,
• major systemic disease (cardiac, renal, liver),
• need for emergency CS,
• having allergy to drugs used in the study,
• having contraindication for spinal anaesthesia or
• refused regional anaesthesia

females undergoing CS