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• W2117534275 abstract "Limited access to esophageal manometry (EM) may delay identification and treatment of patients with achalasia. In order to assess predictors to fast-track patients for manometric confirmation of achalasia, we compared the clinical, radiographic, and endoscopic characteristics of achalasia patients to patients with functional dysphagia without manometric features of achalasia (controls). Patients referred for esophageal manometry to assess functional dysphagia prospectively identified over a 12-month period were asked to participate in this study. The Achalasia Symptom Questionnaire (ASQ), a structured 11-question survey (score: 0–best, 67–worst), was completed by all consenting patients. ASQ scores, esophago-gastro-duodenoscopy and upper gastro-intestinal (UGI) contrast study findings were compared between patents with subsequently confirmed achalasia and those in whom achalasia was excluded by EM. Univariate logistic regression identified predictors that were tested by multivariate logistic regression to generate the model. Of the 803 EM performed over this 12-month period, 95 patients were referred specifically to assess functional dysphagia. Of these, 50 were confirmed to have achalasia, and 45 had dysphagia without manometric evidence for achalasia and hence comprised the control group. ASQ scores were higher in achalasia patients (37 ± 13 versus 23 ± 10). Endoscopy and/or contrast esophagogram reports were available in 92% achalasia patients and 80% controls. Significant predictors for achalasia identified on univariate logistic regression included ASQ score, abnormal findings on endoscopy, and contrast UGI study. Using multivariate logistic regression, we were able to accurately predict the probability of achalasia to be P where P = ey/(1 + ey) and y =−5.6 + (0.089 × ASQ) + (2.088 × EGD) + (3.083 × UGI), e = exponential constant 2.7182, esophagogastroduodenoscopy (EGD) and UGI = 0 if normal and 1 if abnormal. Dropping the predictor ASQ, the formula changes to y =−2.7 + (1.987 × EGD) + (2.861 × UGI). Using only noninvasive investigations (i.e. eliminating EGD), the formula changes to y =−4.9653 + (0.0951 × ASQ) + (3.4312 × UGI). The probability of achalasia can be calculated in patients with functional dysphagia based on clinical, endoscopic, and radiographic findings allowing for a prioritization of EM studies." @default.
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• W2117534275 date "2010-01-01" @default.
• W2117534275 modified "2023-10-14" @default.
• W2117534275 title "Clinical predictors of achalasia" @default.
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• W2117534275 doi "https://doi.org/10.1111/j.1442-2050.2009.01006.x" @default.
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