1) Spasm 
Synonym for oesophageal achalasia ... Constriction of the lower portion of the food pipe (oesophagus) due to inability of the muscles to relax. ... Symptoms include difficulty swallowing, chest pain, vomiting and heartburn. ... Treatment includes oesophageal dilation using special instruments or medications (for example nitroglycerin, calcium chann...
(kahr´de-o-spaz″әm) achalasia of the esophagus.
Type: Term Pronunciation: kar′dē-ō-spazm Synonyms: esophageal achalasia
[n] - a spasm of the cardiac sphincter (between the esophagus and the stomach)
cardiospasm 1. A sustained tight contraction of the muscle sphincter at the lower end of the throat that obstructs the passage of food. 2. Failure of the muscle fibers at the lower end of the esophagus to relax, resulting in swallowing difficulty and regurgitation.
noun a spasm of the cardiac sphincter (between the esophagus and the stomach); if the cardiac sphincter does not relax during swallowing the passage of food into the stomach is obstructed