This prospective randomized comparative study, to assess post-operative lung atelectasis by comparing calculated lung score using ultrasound between pediatric patients intubated with LMA (laryngeal mask airway) under volume versus pressure controlled modes of ventilation.
The initial US scanning will be done prior to the induction of anesthesia. Induction of anesthesia using 4% sevoflurane. Adequate size LMA will be inserted after adequate depth of anesthesia adjusted. Group A (n=25): will receive pressure-controlled ventilation (PCV). Group B (n=25): will receive volume-controlled ventilation (VCV). US scanning and Arterial blood gases at the following: * T1(After maintenance of anesthesia). * T2 (One minute after applying groin bandage and before extubation). * T3 (10 minutes after extubation and resumption of adequate regular breathing). * T4 (30 min post extubation).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
DIAGNOSTIC
Masking
DOUBLE
Enrollment
60
Pressure controlled versus Volume controlled ventilation using LMA
Dalia Saad
Cairo, Egypt
Post operative incidence of Lung atelectasis immediate post-removal of LMA.
calculate lung score using lung ultrasound
Time frame: immediated post removal of LMA
Correlation between lung score and PaO2 /FiO2 ratio
Arterial blood gases (ABG) in different time
Time frame: From the preoperative period (T0) to 30 minutes post-extubation
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