<prompt> In achalasia cardia, true is -Pressure at distal end increased with no peristalsisLow pressure at LES with no peristalsisPressure 50 mm Hg with peristalsisPressure at the distal end increased with normal relaxation  <response>: The pressure is elevated at LES with incomplete relaxation on deglutition. The normal pressure of LES is 13.8 4.6 of Hg. In Achlasia it increases to twice normal.Also knowHypertensive Lower esophageal sphincteris another motor disorder distinct from Achalsiahere the LES pressure is elevated but it relaxes normally. Peristalsis in the esophageal body is also normal. 