Impedance /pH monitoring is a reflux study. This study is useful in the evaluation of reflux disease that is not responsive to acid suppression therapy. It employs an ambulatory 24-hour test to determine the correlation of symptoms to both acid and nonacid reflux, or to rule out reflux as the cause of your ongoing symptoms. We can comprehensively assess your total reflux patterns and correlate them to symptoms while you remain comfortably on your medications.