The Effect of Bilateral Erector Spina Block on Postoperative Pain in Adult Cardiac Surgery: A Randomized, Clinical Study.

Failure to adequately prevent pain after heart surgery increases morbidity and results in a high incidence of persistent poststernotomy pain syndrome.

The use of special opioid-based analgesia causes adverse effects such as nausea, vomiting, sedation, urinary retention, respiratory depression and delayed tracheal extubation.

Regional anesthesia techniques such as pectoralis nerve block and serratus anterior block provide analgesia in the sternum and protection from pain in the lateral / posterior chest wall.

Ketamine and a2 agonists were used for intravenous analgesia to reduce opioid consumption. However, these drugs have potential side effects that limit their extensive clinical use as analgesic agents. The use of regional anesthetic techniques, e.g. thoracic epidural and thoracic paravertebral block, dural puncture, epidural hematoma, spinal cord injury, hypotension, pneumothorax, epidural abscess, ipsilateral Horner's syndrome Their use has declined due to the high failure rate of as much as 15% (especially for the thoracic epidural) and the significant possibility of complications.

Erector spinae (ESP) block, a new method, provides a wide multi dermatomal sensory block. In the T 4-5 spinous process, the bilateral ESP block provides analgesia from T2 to T9 sensory level and results in both somatic and visceral analgesia by blocking both the dorsal and ventral of the spinal nerves, including the sympathetic chain. This block can provide sufficient analgesia for the median sternotomy because the main nerve supply to the sternal region is from T2 to T6. Our aim in this study is to investigate analgesic consumption and postoperative pain effect in patients who underwent cardiopulmonary bypass with Erector Spina Block, a new block.