Transversus Thoracis Muscle Plane Block Plus Rectus Sheath Block in the Perioperative Pain Management of Cardiac Surgery

A linear array transducer (6-13 MHz) with a sterile cover and a 22-gauge (G) block needle (KDL™, Kindly group, Shanghai, China) will be used. Place the ultrasound probe on the longitudinal plane 1 cm outside the edge of the sternum in the fourth intercostal space, and identify the T3-T4 intercostal space under ultrasound. Use the plane technique to place a 22-gauge, 80-mm needle obliquely upwards until the needle tip is located at the plane between the internal intercostal muscles and the transverse pectoralis muscle. After general anesthesia, all subjects were injected with 0.3% ropivacaine 15ml and 10ml respectively after insertion of a needle into bilateral transverse thoracic muscle plane and rectus sheath guided by B-ultrasound.

A linear array transducer (6-13 MHz) with a sterile cover and a 22-gauge (G) block needle (KDL™, Kindly group, Shanghai, China) will be used. Place the ultrasound probe on the longitudinal plane 1 cm outside the edge of the sternum in the fourth intercostal space, and identify the T3-T4 intercostal space under ultrasound. Use the plane technique to place a 22-gauge, 80-mm needle obliquely upwards until the needle tip is located at the plane between the internal intercostal muscles and the transverse pectoralis muscle. After general anesthesia, all subjects were injected with 0.9% saline 15ml and 10ml respectively after insertion of a needle into bilateral transverse thoracic muscle plane and rectus sheath guided by B-ultrasound.