Transcutaneous electrogastrography: a non-invasive method to evaluate post-operative gastric disorders?

Area of Science:

• Gastroenterology
• Medical Diagnostics
• Surgical Outcomes

Background:

• Transcutaneous electrogastrography (EGG) is a non-invasive diagnostic tool for functional gastric disorders.
• Recent advancements in computer programs have led to a resurgence in EGG's clinical application.
• This study aimed to assess the clinical utility of EGG in patients post-upper gastrointestinal surgery.

Purpose of the Study:

• To evaluate the clinical value of electrogastrography in patients following various upper gastrointestinal surgical procedures.
• To determine if EGG can differentiate between symptomatic and asymptomatic patients post-surgery.
• To investigate the correlation between EGG patterns and scintigraphic gastric emptying.

Main Methods:

• Electrogastrography tracings were recorded using a data logger at 4 Hz.
• Analysis included pre- and postprandial periods after a standard meal, examining parameters like dominant frequency and gastric activity.
• Forty-nine post-upper intestinal surgery patients (cholecystectomy, Nissen fundoplication, gastrectomy, vagotomy) and 19 healthy volunteers were studied.

Main Results:

• Postprandial increase in normal gastric electrical activity was significant across all groups (p < 0.001).
• Patients post-surgery exhibited greater gastric electric activity variability compared to controls (p < 0.05).
• No distinct EGG patterns were identified for specific surgical procedures, nor between symptomatic and asymptomatic patients.

Conclusions:

• Electrogastrography does not provide a specific pattern to differentiate between various upper gastrointestinal surgical procedures.
• EGG findings did not correlate with the presence of epigastric symptoms or scintigraphic gastric emptying.
• Currently, EGG does not significantly contribute to diagnosing or analyzing gastric motility disorders after upper intestinal surgery.