L'impedenziometria esofagea multicanale

Esophageal multichannel intraluminal impedance (MII) is a new diagnostic tool for esophageal functional testing. It detects reflux progression by means of the change in segmental electrical impedance that it causes. This method has not pH- or diet-dependent artifacts, doesn't deliver radiations to the patient, is relatively cheap and is usually performed in association with esophageal ambulatory pH-metry, allowing detectiong and analysis also of non-acid or weakly-acid reflux and increasing the symptom index and facilitating correlation of atypical symptoms with reflux. Patients with drug-resistant reflux-like symptoms should undergo impedance-pH-metry during therapy, because many will have non-acid reflux linked symptoms.