determine the effect of prone positioning on ventilation and perfusion distribution in adults with acute respiratory distress syndrome by electrical impedance tomography
By intravenous injection of a small amount of normal saline, electrical impedance tomography enables evaluation of the pulmonary blood flow. EIT might be helpful in establishing the hypoxemia etiology at bedside via combining regional ventilation and perfusion information. The objective of this study was to describe the physiological effects of prone position on respiratory mechanics, ventilation and pulmonary perfusion in patients with ARDS.
Study Type
OBSERVATIONAL
Enrollment
20
Zhongshan Hospital of Fudan University
Shanghai, Shanghai Municipality, China
RECRUITINGAssess regional distribution of pulmonary perfusion
To evaluate the effect of prone positon on pulmonary blood flow distribution.
Time frame: within 24 hours
Assess regional distribution of pulmonary ventilation
To evaluate the effect of prone positon on pulmonary vetilation distribution.
Time frame: within 24 hours
Assess oxygenation status
To evaluate the effect of prone position by assessing regional distribution of pulmonary perfusion based on indicator dilution and changes at different points in time during varying states of regional ventilation will be evaluated.
Time frame: within 24 hours
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