Patterns of lung aeration assessed through electrical impedance tomography in paediatric patients undergoing elective

Daniela Rosalba1,2, Grazia Meneghetti2, Federico Verdina1,2

  • 1Department of Traslational Medicine, Università del Piemonte Orientale, Novara, Italy.

Insights

Controlled mechanical ventilation (CMV) in pediatric surgery shifts ventilation to lung centers, unlike spontaneous breathing. This effect reverses upon recovery, highlighting anesthesia

Area of Science:

  • Anesthesiology
  • Pediatric Surgery
  • Respiratory Physiology

Background:

  • Anesthesia's impact on pediatric lung function is under investigation.
  • Optimizing pulmonary management in pediatric surgery requires understanding respiratory mechanics.

Purpose of the Study:

  • To assess ventilation distribution changes during anesthesia in pediatric patients.
  • Utilize electrical impedance tomography (EIT) to evaluate ventilation patterns.

Main Methods:

  • Observational study of 76 pediatric surgical patients (57 CMV, 19 spontaneous breathing).
  • Electrical impedance tomography (EIT) monitored lung ventilation at multiple time points.
  • Analyzed regional ventilation distribution and center of ventilation (CoV).

Main Results:

  • Controlled mechanical ventilation (CMV) caused a progressive shift of ventilation to ventral lung regions.
  • Ventilation decreased in dorsal lung zones during CMV.
  • Center of ventilation (CoV) shifted to non-dependent lung regions during CMV.
  • No significant ventilation changes were observed in spontaneously breathing patients.

Conclusions:

  • CMV in pediatric surgery induces ventral lung ventilation redistribution, unlike spontaneous breathing.
  • These ventilation changes are reversible upon recovery of spontaneous breathing.
Abstract

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