Atelectasis
Conditions
Keywords
atelectasis, children, lung ultrasound, lung recruitment
Brief summary
Anesthesia-induced atelectasis is a well-known entity observed in approximately 68-100% of pediatric patients undergoing general anesthesia. The collapse of dependent lung zones starts with anesthesia induction but can persist for hours or even days after surgery. Such anesthesia-related atelectasis has a number of negative clinical consequences such as the impairment of arterial blood oxygenation and lung mechanics as well as the predisposition for ventilator-associated lung injury. The adjustment of ventilator settings for preventing the occurrence of atelectasis and for reducing pulmonary complications remains controversial. Lung sonography (LUS) plays an important role in diagnosing pulmonary diseases in children, including atelectasis of different origins. LUS has demonstrated its high sensitivity and specificity for diagnosing anesthesia-induced atelectasis in children.
Detailed description
Compare lung aeration between two different mechanical ventilation strategies (protective mechanical ventilation and recruitment maneuvers) in pediatric patients scheduled for abdominal laparoscopic surgery using ultrasound imaging and a four-point-aeration score to assess the lung aeration.
Interventions
The lung recruitment maneuver consists in a brief and controlled increment in airways pressure (15 cmH2O of PEEP + 15 cmH2O of driving pressure) for 10 breaths.
Sponsors
Study design
Eligibility
Inclusion criteria
* Written informed consent by parents. * Patients aged 6 months to 7 years old * Scheduled for abdominal laparoscopic surgery * American Society of Anesthesiologists classification: physical status I-II
Exclusion criteria
* Acute airway infection * Cardiovascular and or pulmonary disease * Previous thoracic procedure
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Compare lung aeration between protective mechanical ventilation and recruitment maneuvers in pediatric patients scheduled for abdominal laparoscopic surgery using ultrasound imaging and a four point aeration score to assess the lung aeration | intraoperative | Compare lung aeration between protective mechanical ventilation and recruitment maneuvers in pediatric patients scheduled for abdominal laparoscopic surgery using ultrasound imaging and a four point aeration score (0: normal lung aeration, 1: moderate loss of lung aeration, 2: severe loss of lung aeration, 3: complete loss of lung aeration and lung consolidation). |
Secondary
| Measure | Time frame |
|---|---|
| Lung aeration score pre/post the recruitment maneuver during laparoscopic surgery | intraoperative |