Disorders of peristalsis with esophageal spasticity or hypercontractility. These include distal esophageal spasm or hypercontractile esophagus. In this example of distal esophageal spasm, the DCI is normal with a reduced distal latency and normal IRP. Hypercontractile esophagus includes subgroups: single peak hypercontractile swallow, hypercontractile with jackhammer esophagus, and hypercontractile with LES after contraction.
From: Yadlapati R, Kahrilas PJ, Fox Mark R, et al. Esophageal motility disorders on high-resolution manometry: Chicago classification version 4.0. Neurogastroenterol Motil 2021; 33:e14058.
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