High-resolution manometry with additional maneuvers using the Starlet system: normative thresholds and diagnostic yields for relevant esophagogastric junction outflow disorders
Tóm tắt
Chicago classification version 4.0 suggests additional maneuvers, such as upright testing, multiple rapid swallows (MRS), and the rapid drink challenge (RDC), for high-resolution manometry (HRM) to minimize ambiguity in the diagnosis of esophageal motility disorders. The present study investigated normative thresholds for these new metrics using the Starlet system as well as their diagnostic yields for relevant esophagogastric outflow disorders (EGJOD). In study 1, 30 asymptomatic volunteers prospectively performed HRM including MRS and RDC in the supine/upright positions. We calculated normative thresholds for the new metrics, such as upright integrated relaxation pressure (IRP), upright intrabolus pressure (IBP), and IRP during RDC (RDC-IRP). In study 2, we retrospectively analyzed the HRM tracings of 82 patients who underwent HRM in both positions at our hospital to assess the diagnostic yields of HRM metrics.
Based on the results of study 1, we adopted the following normative thresholds: upright IRP < 20 mmHg, upright IBP < 21 mmHg, and RDC-IRP < 16 mmHg. In study 2, 45 patients with dysphagia or chest pain were included in the analysis to identify predictive factors for clinically relevant esophagogastric outflow disorders (true EGJOD). Supine/upright IRP, RDC-IRP, and pan-esophageal pressurization > 20 mmHg during RDC (RDC-PEP) predicted true EGJOD with RDC-PEP with the highest sensitivity of 91.7%. HRM with additional maneuvers may facilitate the diagnosis of clinically relevant EGJOD.
Tài liệu tham khảo
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