Another medical defense to Nashville DUI breath test cases is GERD .GERD is short for Gastroesophogeal reflux disease. It is also known as acid reflux .GERD is caused by a problem with the sphincter muscle between esophagus and the stomach.The person experiences acid refluxing into the esophagus along with whatever is in the stomach like alcohol.Once heartburn occurs , the reflux can get in the mouth which can be detected by the breath test machine.If there is alcohol in the stomach , it can help to cause a false breath alcohol reading.

The bottom line is a complete investigation should include a medical questionnaire on medical issues that will impact your Nashville DUI case.