Related Experiment Videos
Increased inspiratory pressure for reduction of atelectasis in children anesthetized for CT scan
Michael A Sargent1, Douglas H Jamieson, Anita M McEachern
1Department of Radiology, Children's and Women's Health Centre of British Columbia, 4500 Oak Street, Vancouver BC V6H 3N1, Canada. msargent@cw.bc.ca
Insights
Increased inspiratory pressure during anesthesia for pediatric chest CT scans can reduce atelectasis. A pressure of 30 cm H2O is recommended to improve lung aeration in anesthetized children.
Area of Science:
- Pediatric Anesthesiology
- Pulmonary Medicine
- Radiology
Background:
- Atelectasis is a common complication in pediatric patients undergoing computed tomography (CT) scans.
- Anesthesia is associated with more frequent and severe atelectasis compared to sedation in children for CT scans.
Purpose of the Study:
- To investigate the impact of elevated inspiratory pressure on the severity of atelectasis in children undergoing general anesthesia for chest CT.
- To establish optimal ventilation strategies to mitigate lung collapse during pediatric CT examinations.
Main Methods:
- A comparative study involving three groups of pediatric patients undergoing chest CT.
- Group A: Anesthetized children with inspiratory pressures up to 25 cm H2O.
- Group B: Anesthetized children with inspiratory pressures of 30 cm H2O or higher.
- Group C: Children undergoing deep sedation.
Main Results:
- Atelectasis was significantly less severe in children anesthetized with higher inspiratory pressures (Group B) compared to those with lower pressures (Group A).
- No significant difference in atelectasis severity was observed between the higher pressure anesthesia group (Group B) and the sedation group (Group C).
Conclusions:
- An inspiratory pressure of at least 30 cm H2O is recommended during anesthesia for pediatric chest CT scans.
- Implementing higher inspiratory pressures can effectively reduce atelectasis, improving lung aeration and potentially scan quality in pediatric patients.
Background:
Atelectasis is more frequent and more severe in children anesthetized for CT scan than it is in children sedated for CT scan.
Objective:
To determine the effect of increased inspiratory pressure on atelectasis during chest CT in anesthetized children.
Materials And Methods:
Atelectasis on chest CT was assessed by two observers in three groups of patients. Group A comprised 13 children (26 lungs) anesthetized at inspiratory pressures up to and including 25 cm H2O. Group B included 11 children anesthetized at inspiratory pressures > or =30 cm H2O. Group C included 8 children under deep sedation.
Results:
Atelectasis was significantly more severe in group A than in groups B and C. There was no significant difference between groups B and C.
Conclusion:
An inspiratory pressure of 30 cm H2O is recommended for children anesthetized for CT scan of the chest.