“Dead space: the physiology of wasted ventilation.” H. Thomas Robertson. Eur Respir J 2015; 45: 1704–1716.

We regret that several typographical errors were introduced to the final published version of this article. The term PACO₂ (to indicate alveolar carbon dioxide tension) was presented incorrectly as PaCO₂ (used in the article to indicate arterial carbon dioxide tension).

Also, the second equation on page 1705 was presented incorrectly aswhich should have readThe online version of the article has been amended to correct these errors.