Consistent improvement in sphincterotome orientation with manual grooming

Area of Science:

• Gastroenterology
• Endoscopic Procedures
• Medical Device Optimization

Background:

• Standard sphincterotomes often have suboptimal wire orientation during ampullary cannulation.
• Ideal 12 o'clock orientation is not always achievable.
• The impact of wire guides and standardized grooming on sphincterotome orientation is unclear.

Purpose of the Study:

• To evaluate the intra-ampullary orientation range of double-channel sphincterotomes.
• To determine if catheter grooming or a biliary wire guide affects sphincterotome orientation.
• To assess the efficacy of manual grooming in achieving optimal sphincterotome positioning.

Main Methods:

• Prospective evaluation of double-channel sphincterotome orientation in 25 patients undergoing ERCP.
• Measurement of orientation before and after manual catheter grooming.
• Assessment of orientation with and without an indwelling biliary wire guide in 14 cases.

Main Results:

• The presence of a wire guide did not significantly alter sphincterotome orientation.
• Manual grooming shifted mean maximal left orientation to -37 +/- 28 degrees (p < 0.0001).
• Grooming enabled 80% of sphincterotomes to achieve 0 (12 o'clock) orientation and 100% to orient within 10 degrees of zero.

Conclusions:

• Manual grooming reliably improves the orientation of double-channel sphincterotomes.
• The presence of a wire guide does not impact sphincterotome orientation.
• Routine manual grooming of sphincterotomes is recommended before use in ERCP.