ArticleArquivos de gastroenterologia2026
MULTICHANNEL INTRALUMINAL IMPEDANCE MAY BE USEFUL TO IDENTIFY CLINICALLY RELEVANT ESOPHAGOGASTRIC JUNCTION OUTFLOW OBSTRUCTION.
Article in Arquivos de gastroenterologia, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundA clinically relevant conclusive diagnosis of esophagogastric junction outflow obstruction (EGJOO) requires a manometric diagnosis, relevant symptoms and adjunct exams supporting outflow obstruction. Multichannel intraluminal impedance measurement provides an evaluation of esophageal clearance.
objectiveThis study aimed to evaluate the effectiveness of multichannel intraluminal impedance in providing supportive evidence of outflow obstruction and differentiating between severe and mild cases in patients suspected of having esophagogastric junction outflow obstruction.
methodsA cohort of fifty-nine patients presenting with Abnormal Esophagogastric Junction Relaxation (AEJR), as classified by Chicago Classification version 4.0, was selected from a retrospective, single-center study. Their data from high-resolution impedance manometry were reviewed and compared with clinical and radiologic data. Patients were classified as highly symptomatic (AEJR-HS) or moderately/mildly symptomatic (AEJR-MS) using the Eckardt score.
resultsAEJR-HS was identified in 28 patients and AEJR-MS in 24. Incomplete liquid clearance by multichannel intraluminal impedance demonstrated a strong association with radiological incomplete esophageal clearance (OR: 14.08, 95%CI 2.93 - 87.60, P<0.001) and high diagnostic accuracy (93.2%) for EGJOO CC v4.0. Forty percent or more incomplete liquid clearance by multichannel intraluminal impedance during supine swallows showed good accuracy in separating AEJR-HS from AEJR-MS with 75% sensitivity and 83% specificity (AUC=0.825; 95%CI 0.708-0.941, P<0.001).
conclusionMultichannel intraluminal impedance closely matches esophageal radiography in identifying severe obstructive symptoms and incomplete clearance in AERJ patients and may serve as an alternative to radiography in confirming EGJOO v4.0 in patients with manometric EGJOO.
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