Postprandial refilling and turnover: specific gallbladder motor function defects in patients with gallstone...

Area of Science:

• Gastroenterology
• Biliary tract physiology
• Gallstone disease pathogenesis

Background:

• Impaired gallbladder motor function is implicated in cholesterol gallstone formation and recurrence.
• New parameters of gallbladder motor function, including postprandial refilling and turnover, have been defined.
• These parameters were found to be impaired in patients with gallstones.

Purpose of the Study:

• To evaluate the utility of new gallbladder motor function parameters in differentiating patients with gallstone recurrence from those without.
• To assess the role of gallbladder emptying, postprandial refilling, and bile turnover in gallstone recurrence.

Main Methods:

• Studied 11 patients with gallstone recurrence, 11 without recurrence (post-dissolution), and 11 healthy controls.
• Simultaneously measured gallbladder volume (ultrasound) and counts (scintigraphy) over 90 minutes post-meal.
• Calculated gallbladder emptying, postprandial refilling, bile turnover, and turnover index.

Main Results:

• Patients with gallstone recurrence showed reduced gallbladder emptying, postprandial refilling, and bile turnover.
• A significant reduction in the gallbladder turnover index was observed in recurrent patients compared to controls and non-recurrent patients.
• Patients without recurrence had only minor reductions in emptying, with no significant changes in refilling or turnover.

Conclusions:

• Impaired gallbladder emptying persists after gallstone dissolution, more so in recurrent cases.
• Impairments in postprandial refilling and gallbladder bile turnover are specific indicators of gallstone recurrence.
• These novel functional parameters aid in identifying patients at risk for gallstone recurrence.