In the article Influence of different degrees of head elevation on respiratory mechanics in mechanically ventilated patients, DOI number: 10.5935/0103-507X.20150059, published in Revista Brasileira de Terapia Intensiva 2015;27(4):347-52, page 347 "Vanessa Silva Salgado" should be read as "Vanessa Salgado Silva". In the article Delirium in intensive care unit patients under noninvasive ventilation: a multinational survey, DOI number: 10.5935/0103-507X.20150061, published in Revista Brasileira de Terapia Intensiva 2015;27(4):360-8, pages 365 and 366, Discussion, 10th paragraph, lines 10 and 25, "acute renal failure" should be read as "acute respiratory failure".