A Modified Method for Blind Bedside Placement of Post-pyloric Feeding Tube.

Inclusion Criteria: * All patients had dysphagia that could not be alleviated within 48 hours * High-risk status with aspiration pneumonia, including consciousness disorder caused by various diseases, severe dementia, bed rest, gastroesophageal reflux, hiccup, gastric retention, achalasia of pyloric. * Can't receive nasogastric tube feeding. Exclusion Criteria: * The previous history of upper abdominal surgery. * Gastroduodenal ulcer and esophagogastric varices; * Severe sinusitis and nasal bone fracture; * Patients with recent gastrointestinal bleeding, intestinal obstruction, ischemic bowel disease, and epistaxis; * Patients with electromagnetically-guided catheterization should additionally exclude implantable cardiac defibrillator, implantable cardiac pacemaker or diaphragm pacemaker.