Interpectoral-pectoserratus Plane Block for Minimally Invasive Aortic Valve Replacement Via Right Anterior Minithoracotomy

After wound closure, the IPP-PSP block is performed at the level of the 4th rib. At the pre-axillary line, the pectoralis major, the pectoralis minor and the serratus anterior muscle are identified. At first, the needle is positioned in the fascial plane between the pectoralis minor and the serratus anterior muscle. The needle position is confirmed by hydro-dissection of this plane with 2 mL of normal saline 0.9%.The 20 ml syringe with trial drug solution is injected in this pectoserratus plane (PSP). The needle tip is repositioned in the interpectoral plane between both the pectoralis major and minor muscle. The 10 ml syringe with trial drug solution is administered in this interpectoral plane (IPP).

Unilateral (right) IPP-PSP block with 30 mL normal saline 0.9%, administered after the closure of the wounds. The IPP-PSP block procedure will be carried out as described in the intervention description of the IPP-PSP block.