Trial reportBMC anesthesiology2023
Changes in ventilation distribution during general anesthesia measured with EIT in mechanically ventilated small children.
Trial report in BMC anesthesiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Prospective, Open, Non-interventional Study to Assess the Ability of an Electrical Impedance Tomograph (PlumoVista 500) to Monitor Changes in Lung Ventilation Over Time in Mechanically Ventilated Children.
Changes in Pulmonary Ventilation Distribution Assessed by EIT (Electrical Impedance Tomography) in Healthy Children Under General Anesthesia; a Pilot Study Comparing Mask Spontaneous Breathing and Laryngeal Mask Spontaneous Breathing With and Without Ventilatory Support
EIT- Guided Lung Recruitment in Pediatric Acute Respiratory Distress Syndrome
Who cites it
5 citing papers in PubMed, 8 citations in OpenAlex.
- Efficacy of a lung recruitment manoeuvre in children undergoing general anaesthesia with a supraglottic airway.British journal of anaesthesia · 2025Trial
- Effects of Noninvasive Respiratory Support on Ventilation Distribution During Spontaneous Breathing Sedation in Preschool/School-Aged Children: An Electrical Impedance Tomography Study.Paediatric anaesthesia · 2025Trial
- Monitoring multiple rib fractures using pulmonary electrical impedance tomography technology: correlation analysis of pulmonary ventilation changes.Journal of thoracic disease · 2026Article
- Article
- Standard versus individualised positive end-expiratory pressure (PEEP) compared by electrical impedance tomography in neurocritical care: a pilot prospective single centre study.Intensive care medicine experimental · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundAtelectasis during general anesthesia is a risk for perioperative complications. EIT measurements were performed in mechanically ventilated healthy children during elective surgery to demonstrate the changes in ventilation distribution during general anesthesia. The ventilation distribution was quantified by calculating the Global Inhomogeneity index (GI).
methodsEIT measurements were performed in 23 children (9 weeks-10 years) without lung disease to detect changes in regional ventilation during elective surgery. Three previously defined time points were marked during the measurement: after intubation and start of pressure-controlled ventilation (PCV), change to pressure support ventilation (PSV), and after extubation (spontaneous breathing-SB). Ventilation distribution based on regions of interest (ROI) and changes in end-expiratory volume (∆EELV) were collected at these time points and compared. The Global Inhomogeneity index was calculated at the beginning of pressure-controlled ventilation (PCV).
resultsWith increasing spontaneous breathing, dorsal recruitment of atelectasis occurred. The dorsal ventilation fraction increased over the time of general anesthesia with increasing spontaneous breathing, whereas the ventral fraction decreased relatively (Difference ± 5.5 percentage points respectively; 95% CI; 3.5-7.4; p < 0.001). With the onset of spontaneous breathing, there was a significant reduction in end-expiratory volume (Difference: 105 ml; 95% CI, 75-135; p < 0.001). The GI of the lung-healthy ventilated children is 47% (SD ± 4%).
conclusionControlled ventilation of healthy children resulted in increased ventilation of the ventral and collapse of the dorsal lung areas. Restart of spontaneous breathing after cessation of surgery resulted in an increase in ventilation in the dorsal with decrease in the ventral lung areas. By calculating the GI, representing the ratio of more to less ventilated lung areas, revealed the presumed homogeneous distribution of ventilation.
trial registrationClinicalTrials.gov Registration ID: NCT04873999. First registration: 05/05/2021.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.