A Combination of Bilateral Pectoral Nerve Block and Bilateral Erector Spinae Plane Block for One-Stage Female-to-Male Gender Affirmation Surgery: A Report of Two Cases

• Application of two peripheral nerve blocks procedures in gender affirmation surgery. • Effective postoperative pain management achieved by bilateral PECS and ESP block. • Peripheral nerve blocks reduce postoperative opiod use and allow patient activation. • Early activation of patients reduces the risk of thromboembolism and pneumonia.