Final answer:
A decreased abdominal distension indicates improvement in a client's condition when a healthcare provider orders a nasogastric tube to be clamped.
Step-by-step explanation:
An order to clamp a nasogastric tube is typically given by a healthcare provider when a client's condition has improved. One assessment finding that indicates improvement is a decreased abdominal distension. This suggests that the client's digestive system is functioning better and there is less build-up of gas or fluid in the abdomen.