Evaluation of Effect of Different Ventilator Mods on Atelectasis in Patients Undergoing Laparoscopic Surgery

Evaluation of Effect of Different Ventilator Mods on Atelectasis in Patients Undergoing Laparoscopic Surgery: a Prospective Randomized Controlled Clinical Trial

In this study researchers aim to evaluate effect of different ventilation modalities on the developments of atelectasis by using ultrasound.

Patients undergoing laparoscopic surgery will be randomly assigned either volume controlled ventilation group or pressure controlled volume guaranteed ventilation group. All patients will be performed lung ultrasonography pre and postoperatively to evaluate the development of lung atelectasis and effect of different ventilation modalities on the development of atelectasis.

Inclusion Criteria:

• undergoing laparoscopic surgery
• ASA Status I-II

Exclusion Criteria:

• Gastroesophageal reflux
• obstructive sleep apnea syndrome
• BMI>30
• severe lung and heart disease
• ASA Status III-IV