What is the primary purpose of a gastrostomy tube (G-Tube)?

The primary purpose of a gastrostomy tube (G-Tube) is to allow for surgical feeding directly into the stomach. This tube is typically inserted through the abdominal wall into the stomach, providing a means for patients who are unable to eat by mouth to receive adequate nutrition. This approach is particularly beneficial for those with swallowing difficulties, neurological conditions, or gastrointestinal disorders.

The other options represent different medical interventions: intravenous nutrition is provided through a vein, which is not the function of a G-Tube; administering medications via injection involves a different method entirely than what is facilitated by a G-Tube; and assisting in respiratory therapy pertains to maintaining or supporting breathing, which is separate from the nutritional purposes of a G-Tube. Thus, the role of a G-Tube in ensuring direct access to the stomach for feeding distinguishes it from these other interventions.