The Effect of Lung Recruitment Maneuver on Postoperative Atelectasis in Children

The Effect of Lung Recruitment Maneuver on Postoperative Atelectasis in Children - Effect of Ultrasonography Guided Recruitment

The investigators compare the degree of atelectasis in recovery room between conventional recruitment maneuver and ultrasonography-guided lung recruitment during surgery.

Inclusion Criteria:

• Patients who undergo surgery for more than 1 hour under general anesthesia
• Children under 6 years old
• American Society of Anesthesiologist Physical Status I or II

Exclusion Criteria:

• History of lung surgery
• Abnormal findings in chest x-ray
• Laparoscopic surgery
• Abdominal surgery