This study evaluates the incidence of postoperative atelectasis after general anesthesia with prone position using lung ultrasound in children age \< 3 years.
Atelectasis is common in pediatric patients after general anesthesia. Particularly, infants are more likely to develop atelectasis or ventilation-perfusion imbalance after general anesthesia because of the immature ribs and respiratory muscles, the high compliance of the rib cage and a significant reduction in functional residual capacity (FRC) during general anesthesia. Previous studies have reported that alveolar recruitment and positive end-expiratory pressure (PEEP) can be used to reduce atelectasis in children. Also, previous studies have shown that the lung ultrasound can be used to evaluate the degree of atelectasis during general anesthesia in children. However, none of the previous studies investigated the incidence of atelectasis, the effect of alveolar recruitment, and the PEEP in pediatric patients under general anesthesia with prone position. The purpose of this study was to evaluate previously described parameters using lung ultrasound.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
74
Apply sustained airway pressure of 30-40 cmH2O for 10-20 seconds before suegery and once an hour during surgery. PEEP is set to 7 cmH2O.
Apply sustained airway pressure of 30-40 cmH2O for 10-20 seconds before surgery. PEEP is set to 7 cmH2O.
SNUH
Seoul, Jongnogu, South Korea
Incidence of pre-extubation atelectasis
Incidence of pre-extubation atelectasis accessed by lung ultrasound
Time frame: postoperative 10 minutes
Incidence of intraoperative atelectasis after intubation
Incidence of intraoperative atelectasis after induction accessed by lung ultrasound
Time frame: intraoperative
Incidence of intraoperative atelectasis after position change to prone
Incidence of intraoperative atelectasis after position change to prone accessed by lung ultrasound
Time frame: intraoperative
Incidence of intraoperative and postoperative (within 12hr) desaturation
Oxygen saturation by pulse oximetry (SpO2) ≤ 95% or 10% below the baseline value
Time frame: intraoperative and postoperative (within 12hr)
Incidence of intraoperative hypotension
Systolic blood pressure (SBP) ≤ 20% below the baseline value
Time frame: intraoperative
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