Continuous Erector Spinae Block Versus Continuous Edge of Laminar Block on The Quality of Analgesia and Diaphragmatic Excursion in Patients With Multiple Rib Fractures

Rib fractures occur in up to 12% of all trauma patients, most commonly due to blunt thoracic trauma, and pose a significant health care burden with their associated morbidity and mortality.

The erector spinae plane block (ESB) is a myofascial plane technique in which a needle is inserted under ultrasound guidance deep to the erector spinae muscle group, allowing an infusion of local anesthetic to diffuse to both the dorsal and ventral rami of the spinal nerves, thereby supplying the rib cage. This technique can be used as a single-shot method or to facilitate the placement of a catheter, allowing for continuous infusion and/or intermittent bolus to provide long-lasting analgesia.

The edge of laminar block (ELB) is a novel technique in which local anesthetics are injected at the lateral edge of the lamina. It has been proven to provide sensory analgesia during rib fractures.

Inclusion criteria

• Aged between 21 and 65 years.
• Both sexes.
• With unilateral traumatic multiple fracture ribs (≥ 3), admitted to the surgical intensive care unit within the first day of trauma.

Exclusion criteria

• Patients' rejection.
• Body mass index ≥ 35 (kg/m2).
• Bleeding and Coagulation disorders.
• Known hypersensitivity to the study drugs.
• Vertebral deformity.
• Respiratory, cardiac, renal or hepatic dysfunction.
• Patients with major trauma involving extra-thoracic structures (e.g., head, spine, pelvis, and abdominal visceral injuries).
• Mental or cognitive dysfunction,
• History of chronic analgesic or drug abuse.
• Local infection at the site of the block.