Study of the effectiveness of adding thoracic spinal anesthesia to general anesthesia for faster recovery after heart surgery.

INTERVENTION: Intervention1: Thoracic Segmental Spinal with Isobaric Ropivacaine and Morphine: Upon free return of clear cerebrospinal fluid, isobaric ropivacaine(1ml , 0.5%) with morphine (300mcg) will be injected in the CSF. The patient will be made supine and the effect will be checked by testing for loss of cold sensation with spirit swab and loss of pain sensation by pin prick in dermatomes T2‐T8. Control Intervention1: Control Group: Patients in group G will be administered fentanyl 2 mcg/kg IV hourly intraoperatively and paracetamol 15 mg/kg IV 6 hourly postoperatively. CONDITION: Health Condition 1: I52‐ Other heart disorders in diseasesclassified elsewhere Health Condition 2: I059‐ Rheumatic mitral valve disease, unspecified PRIMARY OUTCOME: To compare postoperative verbal analogue scale at extubation and in the 1st 48 hours.Timepoint: after extubation, 2hr, 6hr, 12hr, 24hr, 48hr. SECONDARY OUTCOME: To compare ICU & hospital stay durationTimepoint: To compare number, time & dose of rescue analgesicsTimepoint: To compare the time taken to extubationTimepoint: Postoperative period INCLUSION CRITERIA: All cardiac surgery patients above 18 years of age posted for elective cardiac surgery via midline sternotomy and suitable for fast tracking.