NCT07640516: The Analgesic Efficacy of Dexmedetomidine Versus Fentanyl as an Adjuvant to Bupivacaine in Ultrasound Guided Peripheral Nerve Blocks as a Solo Anesthetic Technique in High Risk Patients Undergoing Unilateral Above Knee Amputation .

Sponsor: Kasr El Aini Hospital. Phase: NA. Conditions: Analgesia Assessment, Above Knee Amputation, Fentanyl vs Dexmedetomidine