Perspectives on the Role of Thoracic Fascial Blocks in Cardiac Anaesthesia: Will They Represent a New Era?

Cardiac surgery is continuously evolving, with increasing skills required by the cardiac anaesthesiologist. Following the advent of intraoperative echocardiography, we are witnessing a potential new revolution for the cardiac anaesthesiologist. A new era has indeed started with the implementation of thoracic fascial blocks (TFBs) in the field of cardiac surgery. TFBs provide several advantages in the context of multimodal analgesia, with improved pain control and reduction of the side effects related to large doses of opioids. We envisage that implementation of TFBs is likely to become a pivotal concept in the field of enhanced recovery after cardiac surgery. We describe the main TFBs for the anterior and/or antero-lateral chest wall, and their peculiar use in cardiac surgery. In particular, we discuss indications and tips and tricks to enhance clinical results for the following blocks: (1) Pecto-Intercostal Plane (superficial and deep); (2) Rectus Sheath; (3) Interpectoral Plane and Pectoserratus Plane; (4) Serratus Anterior Plane; (5) Erector Spinae Plane. Nonetheless, the scientific evidence for the use of TFBs in the field of cardiac anaesthesia is not robust yet, mostly based on small-sized single-centre studies, making it difficult to achieve a high quality of evidence. Further, it remains unclear which cardiac surgery patients may benefit the most from these techniques.