Effect of Different Types of Anesthesia on Perioperative Brain Natriuretic Peptide Levels in Parturient Cardiac Patient Undergoing Elective Cesarean Section

"G.A will be conducted After pre-oxygenation for 3-5 minutes. thiopental (5 mg/kg) will be administered I.V, followed by succinylcholine 1.5 mg/kg. After tracheal intubation, the patients will be ventilated with 100% oxygen. isoflurane 0.8% will be added, to maintain the anesthesia. Further neuromuscular block will be maintained by using atracurium . After delivery of the fetus, fentanyl IV will be given 1ug/kg as analgesia and 20 IU oxytocin will be given by I.V infusion .Reverse neuromuscular blockade as necessary at completion of surgery. Extubate when the patient is awake~In the sitting position and after complete asepsis , 2-3 ml of Lidocaine will be injected subcutaneously, spinal anesthesia will be performed at interspace L3-4 or L4-5, midline approaches using 22 guage Quinke needle . 2.5 ml of hyperbaric bupivacaine 0.5% in addition to 25 μg fentanyl will be injected into the subarachnoid space after successful dural puncture and confirmation by barbotage."