Dr. Santhosh Kumar Bennur , Dr. Manasa G , Dr. Soumya M V, Dr. Darshan M S 2026. COMPARISON OF EFFICACY AND SAFETY OF ISOBARIC LEVOBUPIVACAINE WITH DIFERENT ADJUVANTS LIKE CLONIDINE VS DEXMEDETOMIDINE IN SEGMENTAL THORACIC SPINAL ANAESTHESIA FOR OPEN CHOLECYSTECTOMY CASES- A RANDOMIZED CASE CONTROL STUDY . International Journal of Pharmacy Research & Technology (IJPRT). 16, 2 (Jul. 2026), 939–948.