As per a recently published randomized controlled observer-blinded study in the Journal of Regional Anesthesia & Pain Medicine, a subarachnoid block along with continuous postoperative analgesia through a transverse abdominis plane catheter controls pain and enhances function outcomes in better ways in six months after the inguinal hernioplasty.

A total of 72 consecutive patients were selected and categorized into three classes: subarachnoid block combined with a continuous transverse abdominis plane block (group TAP), general anaesthesia alone (group GA), and subarachnoid block alone (group SAB). An adapted Core Outcome Measures Index called COMI-hernia, was made for hernia patients and used to assess pain and functional outcomes scores before and six months following the surgery. At first 72 hours before the treatment, pain at rest and five different activities was measured using the numerical rating scale.