<prompt> Which of the following is used for improving long term prognosis in COPD with resting hypoxemia:March 2011OxygenBeta-2 agonistInhaled steroidsSystemic steroids  <response>: Ans. A : OxygenLong term home oxygen therapy improves survival in selected patients with COPD complicated by severe hypoxemia aerial Pa02 less than 8.0 kPa 55 mmHg 