[1] The FLIP device consists of a balloon that encases a catheter with multiple pairs of impedance electrodes.
[1] FLIP may be used for several indications to evaluate esophageal symptoms, such as dysphagia, chest pain, or regurgitation, or to assess response to treatment.
FLIP may be used as a complementary test for barium esophagram for evaluating esophageal outflow obstructive disorders.
[citation needed] FLIP is recommended to further evaluate suspected esophagogastric junction outflow obstruction (EGJOO) where the manometry is normal or borderline.
[2] FLIP measurements may be used to guide intraoperative reflux surgery, or to assess the degree of fibrostenotic disease from eosinophilic esophagitis.