Learning Curve of Double-wire Cannulation Technique During Endoscopic Retrograde Cholangiopancreatography (ERCP)
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|ClinicalTrials.gov Identifier: NCT03707613|
Recruitment Status : Not yet recruiting
First Posted : October 16, 2018
Last Update Posted : October 16, 2018
Selective cannulation is considered the most challenging step for most of endoscopic retrograde cholangiopancreatography (ERCP). Wire-guided cannulation is the standard technique for initial cannulation. When meeting difficulty, double wire technique (DWT) is widely used. With one guidewire occupying pancreatic duct(PD) , the following cannulation of CBD with a sphincterome preloaded with another guidewire often becomes feasible.
When performing DWT, a sphincterotome should enter the common duct of papilla through a small orifice and be placed in the left and upper direction of PD guidewire. Then another guidewire can be advanced into bile duct. As an advanced cannulation technique, DWT can be successfully performed in up to 80% of difficult patients. However, it can be technically difficult, especially for trainees or endoscopists without adequate experience.
Here we planned to prospectively record the procedures of double-wire cannulation by two trainees without prior experience of DWT. This study aims to delinate the learning curve of DWT.
|Condition or disease||Intervention/treatment||Phase|
|Biliary Cannulation Endoscopic Retrograde Cholangiopancreatography||Procedure: DWT learning curve||Not Applicable|
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||60 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||Learning Curve of Double-wire Cannulation Technique During Endoscopic Retrograde Cholangiopancreatography(ERCP): a Pilot Study|
|Estimated Study Start Date :||October 15, 2018|
|Estimated Primary Completion Date :||February 28, 2019|
|Estimated Study Completion Date :||May 29, 2019|
Experimental: DWT learning curve
Initial cannulation is performed with a wire-guided sphincterotome by a trainee. If the cannulation proves difficult (cannulation time >10min, cannulation attemtps >5 or inadvertent PD cannulation >1) and PD is inadvertently entered, DWT will be performed by one of the two trainees. If DWT fails within 5min or 5 attempts, a trainer will take over and continue the cannulation. To prevent PEP, all patients receive prophylactic PD stent and post-ERCP rectal indomethacin. Aggressive hydartion will be administrated at the discretion of endoscopists.
Procedure: DWT learning curve
trainees learn to perform DWT after unsuccessful initial cannulation
- Successful cannulation of bile duct within 5min or 5 attempts of cannulation [ Time Frame: 3 hours ]It was defined by assurance of entering bile duct through cholangiogram during fluoroscopy.
- Successful cannulation time with DWT by trainees [ Time Frame: 3 hours ]Successful cannulation time was defined by the time taken from the begining of DWT to entering bile duct successfully
- Cannulation attempts with DWT by trainees [ Time Frame: 3 hours ]One cannulation attempt was defined by touching papilla for more than 5 seconds.
- Precut rate [ Time Frame: 3 hours ]Precut includes the procedure of cannulation involving needle knife or dual knife and transpancreatic precut by a sphincterotome.
- post-ERCP pancreatitis(PEP) [ Time Frame: 48 hours ]PEP is defined according to Cotton's criteria. The severity classification is based on revised Atlanta criteria.
- Overall ERCP-related complications [ Time Frame: 48 hours ]Overall ERCP-related complations include PEP, bleeding, perforation, cholangitis and others, which is defined by Cotton's criteria.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03707613
|Contact: Yanglin Pan, M.D.||+firstname.lastname@example.org|
|Endoscopic center, Xijing Hospital of Digestive Diseases|
|Xi'an, Shaanxi, China, 710032|