R-CPD (no-burp) Webinar with Dr. Robert Bastian July 26, 2022 Posted on July 19, 2022March 10, 2023 by Kyle Bell Join Dr. Bastian LIVE on Zoom, July 26 at 6 p.m. CST as he presents an overview of Retrograde Cricopharyngeus Dysfunction (R-CPD), a disorder of the inability to burp. A Q&A session will occur afterwards. Go to laryngopedia.com for more details. Posted in BVI News.