All of the following are signs of respiratory insufficiency except:

Ans: D. All of the above(Ref Bailey 27/e p929-925, 26/e p303: Sobiston 20/e p557: Harrison 19/e p1661, 1731, 1732).Respiratory Insufficiency:Inability of lungs to function properly & maintain normal processes of oxygen uptake & carbon dioxide removal.Sign & symptoms of respiratory insufficiency:Fatigue, shoness of breath, heavy breathing, rapid breathing, exercise intolerance, hypoxia, inability to speak & stridor during inspiration.