system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Amyl nitrate inhalation test is used to detect?
assistant
The correct answer is  Ans. is 'b' i.e., Achalasia cardiaAmyl nitrite inhalation is used to distinguish patients of achalasia from those with pseudoachalasia.Pseudoachalasia of the esophagus, is caused by tumor infiltration of the distal esophagus, and closely simulates the esophageal motor and morphologic abnormalities of achalasia.Amyl nitrite inhalation causes relaxation of lower esophageal sphincter in achalasia. In contrast, amyl nitrite does not relax the LES segment in pseudoachalasia.