This study is to evaluate the effectiveness of Transesophageal Lung ULtrasound (TELUS) guided recruitment maneuver to reduce lung atelelectasis in cardiac surgery. This is a RCT trial involving a cardiac patient that requiring used of cardiopulmonary bypass machine intraoperatively. These patient will be randomized into either intervention group or control group.
Age between 18 to 70 years old.
Elective cardiac surgery that requires used of transoesophageal ECHO.
New York Heart Association class I or II or III
Preoperative LV ejection fraction >40%
Pregnancy
Contraindication to transoesophageal ECHO - oesophageal tumour, stricture, diverticulum, or recent oesophageal or gastric surgery
Previous lung surgery/ history of lung radiation for cancer
Severe obstructive/ restrictive lung disease- Examples: Patient with home CPAP, frequent hospitalization and ICU admissions due to lung disease