Evaluation of the Effect of Lung Recruitment and Positive End- Expiratory Pressure (PEEP) on Anesthesia Induced Atelectasis Using Lung Ultrasound

Atelectasis is a side effect of general anesthesia which can be found in all types of interventions and patients of all ages.1-3 The reported incidence of anesthesia- induced atelectasis in children varies, ranging from 12 to 42% in sedated and nonintubated patients 5, 6 and from 68 to 100% in children with general anesthesia with tracheal intubation or laryngeal mask. The aim of this work is to evaluate the effect of lung recruitment on anesthesia induced atelectasis using intraoperative lung ultrasound. Objectives * To determine the effect of recruitment on anesthesia induced atelectasis using lung ultrasound. * To Estimate the change of Pao2 with anesthesia induced lung atelectasis. * To Estimate the change of Pao2 with lung recruitment. * To evaluate the feasibility of use of lung ultrasound as a tool to guide optimum lung recruitment.