Thoracic Paravertebral Block Versus IV Fentanyl Infusion

High-quality analgesia during and following cardiac surgery is infrequently obtained, Sternotomy and thoracotomy is associated with significant pain that resulte in hypoventilation, atelectasis, and hypoxemia,Pain management is rarley a priority in the immediate postoperative care of these patients, who frequently require mechanical ventilation in an intensive care environment