A nasogastric tube (10) including a main lumen (12) having one or more proximal connectors (14) for connecting to a source of substances or pressure, and one or more vacuum lumens (16) peripherally surrounding the main lumen (12), each vacuum lumen (16) including a vacuum sealing portion (24), which includes one or more suction ports (26) for sealingly drawing an inner wall of an esophagus thereagainst.
