Year 2024 / Volume 116 / Number 11
Original
Achalasia: diagnostic delay and manometric characteristics with high-resolution solid-state and perfusion equipment

590-598

DOI: 10.17235/reed.2024.10181/2023

María Adela López Sánchez, Constanza Ciriza de los Ríos, Cecilio Santander,

Abstract
Introduction: the early diagnosis of achalasia requires a high degree of clinical suspicion, and delays in diagnosis are frequent. High-resolution esophageal manometry (HRM) is the gold standard for its diagnostic confirmation. There are two HRM systems, perfusion and solid-state, which allow its classification into three subtypes: I, or classical; II, or with pan-esophageal pressurization; and III, or spastic. Objective: to determine the clinical and manometric characteristics of the three subtypes with high-resolution perfusion and solid-state equipment and the time of evolution until diagnosis. Methods: this was a multicenter, observational, retrospective study of patients from the INTEGRA database of the Spanish Association of Neurogastroenterology and Motility who were diagnosed with primary achalasia confirmed by HRM, who fell under the Chicago Classification v3.0, and who had not been treated. Results: the study included 110 patients (subtype I, n = 14; subtype II, n = 73; subtype III, n = 23). The HRM equipment was perfusion for 49 and solid-state for 61. The mean age was 61.8 ± 14 years (age range 44-81), the age was lower in subtype II, and sex distribution was similar. The time of clinical evolution until diagnosis was > 12 months (51.6 %), subtype II being the one that was diagnosed earlier and the most often (66.3 %). Dysphagia was the most frequent symptom (90.5 %). According to the comparative analysis by high-resolution perfusion and solid-state esophageal manometry equipment, the baseline pressure of the lower esophageal sphincter was higher in the solid-state esophagus, but the difference was not statistically significant. The median integrated relaxation pressure at four seconds (IRP4) was similar (21 mmHg) between the perfusion and solid-state measurements. We describe the ranges of IRP4 in achalasia patients with both systems and confirm the possibility of achalasia even when IRP4 is within the normal range. Conclusions: achalasia in our environment has a significant diagnostic delay. No significant differences were observed in the esophagogastric junction between the two groups diagnosed with perfusion and solid-state equipment.
Lay Summary
The early diagnosis of achalasia requires a high degree of clinical suspicion, and delays in diagnosis are frequent. High-resolution oesophageal manometry (HRM) is the gold standard for its diagnostic confirmation. There are two HRM systems, perfusion and solid-state, which allow its classification into three subtypes: I, or classical; II, or with pan-oesophageal pressurization; and III, or spastic. The purpose of our study was to determine the clinical and manometric characteristics of the three subtypes with high resolution perfusion and solid-state equipment and the time of evolution until diagnosis. A multicentre, observational and retrospective study was carried out with patients from the INTEGRA database of the Spanish Association of Neurogastroenterology and Motility who were diagnosed with primary achalasia confirmed by HRM, who fell under the Chicago Classification v3.0, and who had not been treated. 110 patients were included, 14 of them with achalasia subtype I, 73 with subtype II and 23 with subtype III, confirmed by HRM perfusion system in 49 patients and by HRM solid-state system in 61 patients. The results determined that the mean age was 61.8 ± 14 years, with an age range of 44-81, being lower in subtype II, and the gender distribution was similar. The time of clinical evolution until diagnosis was > 12 months (51.6%), subtype II being the one that was diagnosed earlier and the most often (66.3%). Dysphagia was the most frequent symptom (90.5%). According to the comparative analysis by high-resolution perfusion and solid-state oesophageal manometry equipment, the baseline pressure of the lower oesophageal sphincter was higher in the solid-state oesophagus, but the difference was not statistically significant. The median integrated relaxation pressure at 4 seconds (IRP4) was similar (21 mmHg) with both HRM equipments. Our study provides the ranges of IRP4 in achalasia patients with both systems and confirm the possibility of achalasia even when IRP4 is within the normal range, concluding that achalasia in our environment has a significant diagnostic delay, without observing significant differences in the oesophagogastric junction assessment regardless of using perfusion or solid-state equipment.
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López Sánchez M, Ciriza de los Ríos C, Santander C. Achalasia: diagnostic delay and manometric characteristics with high-resolution solid-state and perfusion equipment. 10181/2023


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Publication history

Received: 17/12/2023

Accepted: 21/05/2024

Online First: 03/07/2024

Published: 11/11/2024

Article revision time: 146 days

Article Online First time: 199 days

Article editing time: 330 days


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