This chapter provides a summary of the management of patients with achalasia and how the addition of a fundoplication can affect outcomes. The primary question asked is could the addition of a Dor fundoplication to a Heller myotomy decrease the incidence of pathologic gastroesophageal reflux? Starting with that question, it describes the basics of the study, including funding, year study began, year study was published, study location, who was studied, who was excluded, how many patients, study design, study intervention, follow-up, endpoints, results, and criticism and limitations. The chapter briefly reviews other relevant studies and information, discusses implications, and concludes with a relevant clinical case regarding treating a patient with either Heller myotomy or Heller myotomy plus partial fundoplication.