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Ventilation-Perfusion Matching in Early-stage Prone Position Ventilation

Acute Respiratory Distress Syndrome Clinical Trial

Official title:
Ventilation-Perfusion Matching in Early-stage Prone Position Ventilation: A Comparison Between COVID-19 ARDS and ARDS From Other Etiologies

Clinical Trial Summary

Prone positioning has been widely used in critical care medicine to improve oxygenation in patients with acute respiratory distress syndrome (ARDS). This study aimed to compare the effect of pronation on lung ventilation-perfusion matching between COVID19-associated acute respiratory distress syndrome (CARDS) and ARDS from other etiologies (non-CARDS) using electrical impedance tomography (EIT).

Clinical Trial Description

In this prospective study, both COVID19-associated ARDS (CARDS) patients and patients with ARDS from other etiologies (non-CARDS) were enrolled. Electrical impedance tomography (EIT) was used to evaluate the changes in ventilation and perfusion between supine and prone positions. Baseline values of the area of DeadSpace, shunt, ventilation-perfusion matching (VQmatch) were identified at the time of enrollment. Within the defined VQmatch region, the global inhomogeneity index (VQmatch-GI) was calculated to assess the degree of uniformity within the region. Prone position was applied immediately after the baseline data were collected. After 2 hours of proning, another EIT examination was conducted. Parameters such as DeadSpace, shunt, VQmatch, and other common measurements before and after pronation were taken and compared to evaluate the effect of prone positioning on CARDS and non-CARDS patients. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05816928
Study type Observational
Source Peking Union Medical College Hospital
Contact
Status Completed
Phase
Start date January 12, 2021
Completion date April 12, 2021
View Details
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