Comparison of two high-resolution manometry software systems in evaluating esophageal motor function.

Area of Science:

• Gastroenterology
• Medical Devices
• Diagnostic Technology

Background:

• High-resolution manometry (HRM) is crucial for diagnosing esophageal motor disorders.
• Software metrics in HRM can be influenced by data averaging and manufacturer-specific characteristics.

Purpose of the Study:

• To compare diagnostic metric variability between different HRM software systems.
• To evaluate the impact of averaging swallow data on diagnostic outcomes.

Main Methods:

• HRM studies from 86 patients and 20 controls were analyzed using standard software (Medtronic).
• Swallow data were exported, averaged into composite swallows, and re-analyzed using two different software systems (Manoview and MMS).
• Comparisons were made between standard analysis, 10-swallow sequences, and composite swallow interpretations.

Main Results:

• High correlation was observed for distal contractile integral (DCI) (r² ≥ 0.9) but lower for integrated relaxation pressure (IRP) (r² = 0.7) between systems.
• Discrepancies in identifying outflow obstruction and ineffective esophageal motility were noted between 10-swallow and composite analyses, though diagnostic conclusions remained largely consistent.
• Variability in software metrics was evident, particularly with composite swallow evaluations.

Conclusions:

• Software metrics for esophageal motility disorders show variability across different manometry systems and analysis methods.
• The study supports the use of manufacturer-specific software metrics applied to 10-swallow sequences for reliable HRM interpretation.