NCT07081295

New Saline-contrast EIT Method Without Breath Hold by Low Pass Filter

A Novel Saline-contrast EIT Method for Lung Perfusion Estimation: Without Breath Hold by Low Frequency Band Pass Filter

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 22 (actual)
• Sponsor: Peking Union Medical College Hospital · Academic / Other
• Sex: All
• Age: 18 Years – 79 Years
• Healthy volunteers: Not accepted

Summary

The electrical impedance tomography (EIT) is a bedside, non-invasive, non-radiation imaging tool for lung mornitoring. Currently, the EIT saline-contrast method for lung perfusion evaluation has been widely used in clinical. However, this technique requires the patient to hold breath for 8-30s to avoid the respiratory interference. Hence, it is not suitable for patients that can not tolerate breath hold or unable to maintain a steady apnoea. This study aims to develop an algorithm system based on low frequency band pass filter for EIT saline-contrast lung perfusion estimation without ventilation interruption, and investigate the correlation and agreement of EIT results between the novel method and the conventional breath-hold method.

Conditions

• Lung Diseases

Interventions

Type	Name	Description
OTHER	Injection of hypertonic saline	Injection 10 mL of 10% NaCl through central venous catheter

Timeline

• Start date: 2024-09-10
• Primary completion: 2024-10-10
• Completion: 2024-10-15
• First posted: 2025-07-23
• Last updated: 2025-07-23

Locations

1 site across 1 country: China