Objective To summary the clinical efficacy of the continuous positive airway pressure(CPAP)-Helmet for the treatment of hypoxemia in airway extubated patients after cardiac surgery with cardiopulmonary bypass(CPB). Methods The clinical data of 6 adult patients in ICU from December 2013 to March 2014,who were after open heart surgery with CPB,were collected. These patients suffered hypoxemia within 48 hours after extubation,and their PaO 2/FiO 2 with oxygen mask could not reach more than 200. Treatment durat...