What is "end stage" of pulmonary fibrosis?

Advance lung damage: End stage pulmonary fibrosis is a common term that we use when we do not feel that our medications can reverse or improve the lung damage caused by the lung fibrosis. At that point, we consider the patient for lung transplantation.

Respiratory failure: In end stage interstitial lung disease the lungs can no longer support the physiologic process of life. Death from respiratory failure is the consequence.