**8.2.3 Argon plasma coagulation**

APC (the most commonly used form of thermal ablation) uses a jet of ionized argon gas (plasma) directed through an endoscopic probe to ablate short segments of Barrett's or areas of persistent disease following other ablative treatment. A trial by Pech et al retrospectively assessed disease recurrence in patients treated by EMR with or without subsequent APC ablation of the residual Barrett's segment. Rates of recurrence fell from 33.3% to 17.6% with the inclusion of APC ablation. Other studies support these results and confirm low complication rates.
