G Tube and blockage-Tuesday Tube Facts Aug 31, 2021 Did you know…? Gastrostomy tubes may become blocked by gastric mucosal overgrowth, which requires surgery. Tube blockage or intraperitoneal leakage can be assessed using water-soluble contrast. References: Gavi, S., Hensley, J., Cervo, F., Nicastri, C., Fields, S. Management of Feeding Tube Complications in the Long-Term Care Resident. Annals of Long-Term Care. 2008. 16(4):28-32.