Serratus Anterior Plan Block and Postoperative Pain in Patients Who Underwent Minimally Invasive Cardiac Surgery

The patient will be in the supine position. The area where the procedure will be performed will be cleaned with povidone iodine. Using a 22-gauge, 80 mm insulated Quincke needle with a high frequency (10-18 MHz) ultrasound linear probe covered with a sterile sheath, the latissimus dorsi muscle and the serratus muscle will be visualized at the level of the 4th and 5th ribs. After determining the fascia between the two muscles, the block needle will be advanced from caudal to cranial and 40 ml of 0.25% bupivacaine (local anesthetic) will be injected on the serratus muscle between the two muscles.