Acute Pain Clinical Trials

Active_comparator: SPSIP BLOCK

Arm Description: The USG probe was placed 2-3 cm medial to the scapular spine to visualize the trapezius, rhomboid major, and serratus posterior superior muscles. At the level of the 2nd-3rd ribs, a needle was advanced into the plane between the serratus posterior superior muscle and the rib. After confirming negative aspiration, 30 mL of 0.25% bupivacaine was injected. The block was performed unilaterally, targeting the surgical hemithorax.

Active_comparator: RIB BLOCK

Arm Description:Rhomboid intercostal plane block procedure, 10% povidone-iodine will be used for skin cleansing. The procedure is performed using a high-frequency linear ultrasound probe. First, the rhomboid and intercostal muscles are located in the area called the auscultation triangle, at the level of thoracic 4-5 o'clock. A needle, visible on ultrasound, is advanced between the rhomboid and intercostal muscles using an in-plane technique. After aspiration is performed to ensure no blood or air is present, a total of 30 ml of 0.25% bupivacaine will be injected between the two muscle planes. The rhomboid intercostal plane block creates sensory paresthesia (sensory numbness) in a dermatomal region between T3 and T9 o'clock.