120
Participants
Start Date
December 1, 2018
Primary Completion Date
December 31, 2022
Study Completion Date
December 31, 2022
Bedside ultrasound-guided real-time biliary drainage
Bedside ultrasound-guided real-time biliary drainage by emergency surgeon in the frail and high risk elderly patients with severe acute suppurative infection of biliary tract
traditional appointment ultrasound
Traditional appointment ultrasound
The Second Hospital of Hebei Medical University, Shijiazhuang
Hebei Medical University
OTHER