Reply to Tulgar and Ercan Serifsoy: “Transversalis fascia plane block provides effective postoperative analgesia for cesarean section: New indication for known block.” J Clin Anesth 2018;48:13–14

[...]TFPB has proven so successful in our opinion that we have since designed and commenced recruitment on a double-blinded, randomized controlled trial, which was granted institutional ethics approval in June 2017 followed by registration on clinicaltrials.gov in August 2017 (ClinicalTrials.gov Identifier: NCT03236324). [...]other blocks such as the Transversus Abdominal Plane block, have demonstrated efficacy on their own, but not when combined with other components of multimodal analgesia such as intrathecal morphine [3]. [...]it was important for us to design a clinical trial to determine what the benefits of TPFB are following C/S. [...]as the authors describe, the second patient received 100 mg of IV tramadol and 20 mg of IV tenoxicam, both of which could have contributed to the analgesic effects observed. [...]we would like to ask the authors what medications were used in their spinal anesthetic for the first patient, and what their thoughts are on the potential contributions of multimodal analgesia in the analgesic effects observed in their patients?