ObjectivesEsophagogastric junction outflow obstruction (EGJOO) defined on high-resolution manometry (HRM) poses a management dilemma given marked variability in clinical manifestations. We hypothesized that findings from provocative testing (rapid drink challenge and solid swallows) could determine clinical relevance of EGJOO. MethodsIn a retrospective cohort study, we included consecutive patients between May 2016 and January 2020 with EGJOO. Standard HRM with 5mL water swallows was followed by provocative testing. Barium esophagography findings were obtained. Cases with structural obstruction were separated from functional EGJOO, with the latter categorized as symptom-positive or symptom-negative. Only symptom-positive subjects were considered for achalasia-type therapies. Sensitivity and specificity for clinically relevant EGJOO during 5mL water swallows, provocative testing and barium was calculated. ResultsOf the 121 EGJOO cases, 76% had dysphagia and 25% had holdup on barium. Ninetyseven (84%) were defined as functional EGJOO. Symptom-positive EGJOO subjects were more likely to demonstrate abnormal motility, pressurization patterns and to reproduce symptoms during provocative testing, but not with 5mL water swallows. Twenty-nine (30%) functional EGJOO patients underwent achalasia-type therapy, with symptomatic response in 26 (90%). Forty-eight (49%) functional EGJOO cases were managed conservatively, with symptom remission in 78%. While specificity was similar, 4 provocative testing demonstrated superior sensitivity in identifying treatment responders from spontaneously remitting EGJOO (85%) compared to both 5mL water swallows (54%; p<0.01) and barium esophagography (54%; p=0.02). ConclusionsProvocative testing during HRM is highly accurate in identifying clinically relevant EGJOO that benefits from therapy and should be routinely performed as part of the manometric protocol.

of consciousness from acute quetiapine overdosage.

of consciousness from acute quetiapine overdosage.

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