We set this randomised trial to assess the safety and utility of ultrasonography in confirming the position of nasal jejunal tube after bedside placement when compared with endoscopic placement in patients with severe acute pancreatitis.~Primary endpoint:~Success rate.~Secondary Endpoint:~Adverse effects, Change of intra-abdominal pressure (1h before, 1h after and 3 days after placement), Tolerance of enteral nutrition, Time to approach the target calories.
The investigators assessed the utility of ultrasonography in confirming the position of nasal jejunal tube after bedside placement when compared with endoscopic placement in patients with severe acute pancreatitis.~Primary endpoint:~Success rate.~Secondary Endpoint:~Adverse effects, Change of intra-abdominal pressure (1h before, 1h after and 3 days after placement), Tolerance of enteral nutrition, Time to approach the target calories.