Final answer:
Excessive sweating, severe vomiting or diarrhea, chronic renal disease with acidosis, and relative decrease in blood sodium are other ways that can lead to the loss of sodium-containing fluid and the development of ECV deficit.
Step-by-step explanation:
The loss of sodium-containing fluid and the development of extracellular volume (ECV) deficit can occur through various ways in addition to gastrointestinal and renal factors.
Some other ways include excessive sweating, severe vomiting or diarrhea, chronic renal disease with acidosis, and a relative decrease in blood sodium due to imbalances in other fluid compartments.