The Effect of Fentanyl or Dexmedetomidine on the Ultrasound-Guided Paravertebral Block for Patients Undergoing Renal Surgeries: Randomized Controlled Trial

Sameh Abdelkhalik Ahmed^*, Mohamad Gamal Elmawy and Amr Ahmed Magdy

Department of Anesthesiology and Intensive Care, Faculty of Medicine, Tanta University, Egypt

^*Corresponding Author: Sameh Abdelkhalik Ahmed, Lecturer of Anesthesiology and Intensive Care, Faculty of Medicine, Tanta University, Egypt, Tel: 00201002977048 Email: