Which factor is a criterion for placing an NGT in an oncology patient?

The placement of a nasogastric tube (NGT) in an oncology patient is primarily indicated when the gastrointestinal (GI) tract is functioning properly. A functioning GI tract allows for the effective delivery of nutrition and medications, which is crucial for patients undergoing cancer treatment who may have difficulty maintaining adequate nutritional intake due to symptoms like nausea, vomiting, or obstruction.

When the GI tract is able to process food, an NGT can facilitate feeding and ensure that the patient receives necessary nutrients despite possible oral intake issues. It provides a way to bypass the challenges of oral feeding while still utilizing the body's ability to digest and absorb substances normally.

Factors such as chemotherapy resistance, recent weight gain, or high activity levels do not directly correlate with the decision to place an NGT. Chemo resistance pertains to how the cancer responds to treatments and does not influence GI function. Meanwhile, recent weight gain might suggest adequate nutrition, making an NGT unnecessary, and a high activity level generally indicates better overall health rather than justifying the need for a tube for nutritional support.