Final answer:
Feeding artificially, such as a PEG tube, is considered the last resort nutritional intervention to ward off significant weight loss.
Step-by-step explanation:
The last resort nutritional intervention to ward off significant weight loss would be feeding artificially, such as using a PEG tube. This intervention involves delivering nutrients directly into the stomach or small intestine through a tube. It is usually used when a person is unable to eat or swallow enough food to meet their nutritional needs. Although it can be a necessary intervention in certain cases, it is typically considered a last resort due to the invasive nature and potential complications associated with tube feeding.