SPSIPB will be performed on the ipsilateral side of the patient right after the anesthesia induction with the patients in lateral position.The ultrasound 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 ribs. After confirming the placement of the needle tip with negative aspiration, 30 mL of 0.25% bupivacaine was injected. The block was performed unilaterally, targeting the shoulder undergoing surgery.

CCBPB will be performed on the ipsilateral side of the patient right after the anesthesia induction with the patients in supine position. For CCBPB, a high frequency linear transducer of the USG is placed in the medial infraclavicular fossa parallel and next to the clavicle to identify the axillary artery. The transducer is then tilted cephalad to image the brachial plexus and the artery in a perpendicular orientation between the subclavius muscle and the serratus anterior. The needle is advanced in-plane in a lateral-to-medial direction, adjusting the angle to reach the space in between the three cords. 15 mL of 0.25% bupivacaine is administered.

30 mL of 0.25% bupivacaine

Numerical rating scale is used for pain assessment. The scores of the numerical rating scale changes between 0 to 10 points. 10 points mean "the most severe pain that the patient ever had". 0 point means "there is no pain." Higher scores mean worse outcome.

Ipsilateral diaphragmatic excursions will be measured both preoperatively right before the anesthesia induction, and postoperatively after 30 minutes of emergence from anesthesia (upon reaching 9 points on modified Aldrete scoring). A diaphragmatic excursion change of up to 25% indicates no nerve involvement, a change between 25%-75% indicates partial involvement, and a change exceeding 75% indicates complete involvement of the phrenic nerve.

Postoperative total opioid need was recorded as "milligram" in unit.

The widespread use of minimally invasive interventions to reduce postoperative mortality and morbidity, combined with the implementation of Enhanced Recovery After Surgery (ERAS) protocols, has heightened overall interest in the postoperative recovery period and the importance of outcome evaluation. To address the emerging needs in this field, new tools prioritizing patient satisfaction have been developed alongside traditional scales that measure classical parameters. The Quality of Recovery-15 Patient Survey (QoR-15) stands out as one of the most up-to-date and reliable examples among these tools. The survey is done both preoperatively to record patients' baseline score, and postoperatively at 24th hour. Higher scores mean better quality of recovery after surgery. Mininum and maximum scores can be '0 (zero)' and '150 (one hundred and fifty)' respectively.