Nathalie Rommel1,2, Lukas Van Oudenhove2,3, Joris Arts4, Philip Caenepeel4, Jan Tack2,4, Ans Pauwels2. 1. Department of Neurosciences, Experimental Otorhinolaryngology, Deglutology, KU Leuven, Leuven, Belgium. 2. Translational Research Center for Gastrointestinal Disorders (TARGID), KU Leuven, Leuven, Belgium. 3. Consultation-Liaison Psychiatry, University Psychiatric Center KU Leuven Campus Gasthuisberg, University Hospitals Leuven, Leuven, Belgium. 4. Gastroenterology, University Hospital Gasthuisberg, Leuven, Belgium.
Abstract
OBJECTIVES: Altered upper esophageal sphincter (UES) and esophageal body (EB) sensorimotor function and psychosocial factors may both be involved in symptom generation in globus, but their common impact is not yet assessed. The aim of the study is (1) to compare UES and EB sensitivity and compliance of globus patients with healthy controls (HC); (2) to study the association of globus symptom severity (GSS) with UES and EB sensitivity and compliance, UES motor function and psychosocial factors. METHODS: In 58 globus patients, GSS, somatization, and anxiety disorders were determined using validated questionnaires. In 26 HC and 42/58 patients, UES and EB sensitivity and compliance were assessed twice using barostat measurements. UES function of 27 globus patients was evaluated using high-resolution manometry. Bivariate correlations and a general linear model tested the association of these factors with GSS. RESULTS: UES and EB compliance did not differ between globus patients and HC. Upon repeated distension, UES habituation was seen in both groups, whereas EB sensitization (23.3±1.3 vs. 19.5±1.5 mm Hg, P<0.0001) only occurred in globus patients, (P=0.038). UES compliance (ρ=0.37, P=0.04), change in EB compliance upon repeated distension (ρ=0.45, P=0.007), somatization (ρ=0.43, P=0.003), panic disorder (t=3.04, P=0.004), and post-traumatic stress severity (ρ=0.40, P=0.005) were associated with GSS. UES compliance and somatization were independently associated with GSS. A trend (P=0.061) was found for the association of GSS with change in EB compliance. CONCLUSIONS: UES compliance, change in EB compliance, and somatization explain 40% of the variance in GSS. This indicates that globus is a complex disorder of the brain-gut axis rather than a "psychosomatic" disorder or a peripheral esophageal disorder.
OBJECTIVES: Altered upper esophageal sphincter (UES) and esophageal body (EB) sensorimotor function and psychosocial factors may both be involved in symptom generation in globus, but their common impact is not yet assessed. The aim of the study is (1) to compare UES and EB sensitivity and compliance of globus patients with healthy controls (HC); (2) to study the association of globus symptom severity (GSS) with UES and EB sensitivity and compliance, UES motor function and psychosocial factors. METHODS: In 58 globus patients, GSS, somatization, and anxiety disorders were determined using validated questionnaires. In 26 HC and 42/58 patients, UES and EB sensitivity and compliance were assessed twice using barostat measurements. UES function of 27 globus patients was evaluated using high-resolution manometry. Bivariate correlations and a general linear model tested the association of these factors with GSS. RESULTS: UES and EB compliance did not differ between globus patients and HC. Upon repeated distension, UES habituation was seen in both groups, whereas EB sensitization (23.3±1.3 vs. 19.5±1.5 mm Hg, P<0.0001) only occurred in globus patients, (P=0.038). UES compliance (ρ=0.37, P=0.04), change in EB compliance upon repeated distension (ρ=0.45, P=0.007), somatization (ρ=0.43, P=0.003), panic disorder (t=3.04, P=0.004), and post-traumatic stress severity (ρ=0.40, P=0.005) were associated with GSS. UES compliance and somatization were independently associated with GSS. A trend (P=0.061) was found for the association of GSS with change in EB compliance. CONCLUSIONS: UES compliance, change in EB compliance, and somatization explain 40% of the variance in GSS. This indicates that globus is a complex disorder of the brain-gut axis rather than a "psychosomatic" disorder or a peripheral esophageal disorder.
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