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Changes in Lung Aeration and Inspiratory Effort With and Without Awake Prone

Respiratory Distress Syndrome Clinical Trial

Official title:
Changes in Lung Aeration and Inspiratory Effort During High-Flow Nasal Oxygen and Non-Invasive Mechanical Ventilation With and Without Awake Prone

Clinical Trial Summary

The investigators aimed to investigate the ventilation homogeneity and transpulmonary pressure during treatments of High-flow nasal cannula(HFNC) and (CPAP) on supine and prone position for COVID-19 or non-COVID-19 patients with acute hypoxemic respiratory failure (AHRF).

Clinical Trial Description

Awake prone positioning (APP) for non-intubated patients has been reported to improve oxygenation for patients with acute hypoxemic respiratory failure (AHRF),particularly for patients with COVID-19 induced AHRF, APP has been shown to decrease the need of intubation.Similarly, APP with helmet continuous positive airway pressure (CPAP) enables a reduction in the work of breathing and an improvement in oxygenation and sensation of dyspnea in COVID-19-associated acute respiratory distress syndrome (ARDS). Moreover, among intubated patients with ARDS assessed by electro-impedance tomography (EIT), prone positioning was found to reduce alveolar overdistention and collapse, resulting in improvement of ventilation homogeneity.However, the effects of APP on the ventilation homogeneity and work of breathing for non-COVID-19 patients with AHRF remain unknown. High-flow nasal cannula (HFNC) has been proven to improve oxygenation and reduce intubation rate for patients with AHRF in multiple meta-analyses,and has been recommended to treat AHRF in several recently published guidelines.CPAP provides consistent level of positive end-expiratory pressure (PEEP), in comparison to variable level of PEEP generated by HFNC, thus CPAP was reported to have greater improvement of oxygenation than HFNC in 20 patients with AHRF, more importantly, they found that among patients who avoided intubation, the extent of oxygenation improvement was greater with HFNC+APP than with NIV+APP, in contrast, for patients who were intubated, the extent of oxygenation improvement was greater with NIV+APP than with HFNC+APP.This raised the concerns of the self-inflicted lung injury (SILI) generated by heterogenous aeration and large swings of transpulmonary pressure. Thus, the investigators aimed to investigate the ventilation homogeneity and transpulmonary pressure during treatments of HFNC and CPAP on supine and prone. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05719103
Study type Interventional
Source Shanghai Zhongshan Hospital
Contact Ming Zhong, MD, phD
Phone 021-65642662
Email zhong.ming@zs-hospital.sh.cn
Status Recruiting
Phase N/A
Start date January 9, 2023
Completion date December 31, 2025
View Details
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