Ultrasound- Guided Continuous Serratus Anterior Plane Block Versus Ultrasound- Guided Continuous Thoracic Paravertebral Block in Multiple Traumatic Rib Fractures.

Inclusion Criteria: * Patients of either gender aged between 22-65 years with unilateral traumatic multiple fracture ribs (≥ 3 fractured ribs). Exclusion Criteria: * • Contraindications to regional block such as patient's refusal, coagulopathy, local infection at the site of the block, known allergy to local anesthetic drugs and spinal deformity. * Patients suffer from severe cardiovascular disease, hepatic or renal disease and patients with history of psychiatric illness. * Patients had indications for mechanical ventilation on admission or during the study period. * Patients had indications for immediate surgery for other associated injuries. * Patients with hemodynamic instability. * Patients having spine or pelvic fracture, traumatic brain injury, altered conscious level or spinal cord injury.