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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT04730089
Other study ID # EB-EIT
Secondary ID
Status Recruiting
Phase
First received
Last updated
Start date August 1, 2020
Est. completion date July 31, 2022

Study information

Verified date January 2021
Source Shanghai Zhongshan Hospital
Contact Ming Zhong, MD, phD
Phone 021-65642662
Email zhong.ming@zs-hospital.sh.cn
Is FDA regulated No
Health authority
Study type Observational [Patient Registry]

Clinical Trial Summary

Define the effect of epidural block on HPV by EIT.


Description:

Epidural block may affect the physiological mechanism of hypoxic pulmonary vasoconstriction, which is still poorly understood. Electrical impedance tomography might be helpful in establishing the hypoxemia etiology at bedside via combining regional ventilation and perfusion information.


Recruitment information / eligibility

Status Recruiting
Enrollment 50
Est. completion date July 31, 2022
Est. primary completion date July 31, 2022
Accepts healthy volunteers No
Gender All
Age group 18 Years to 80 Years
Eligibility Inclusion Criteria: - Age 18 - 80 years Existing central venous and arterial access Chest circumference 70 - 150 cm Exclusion Criteria: - Contraindication to central venous injection of 5 % sodium chloride (NaCl) Contraindications of PulmoVista 500: Patients with pacemakers, defibrillators or other electrically active implants Patients with damaged skin or impaired skin contact of the electrodes due to wound dressings Patients where the attachment of the patient belt could pose a risk to the patient, e.g. patients with spinal lesions or fractures Patients with uncontrolled body movements Extremely obese patients (BMI>50) Patients during pregnancy Patients with massive lung edema Use during electricity-based therapies, such as electrosurgery or electrocautery Use in the presence of strong magnetic fields Use in conjunction with other bioimpedance measurement devices

Study Design


Related Conditions & MeSH terms


Intervention

Device:
Electrical impedance tomography
A bolus of 10ml 10% NaCl was injected during a respiratory pause (=10s) through the central venous catheter.The results of arterial blood gas analysis and the data of EIT were collected before the first prone session (time baseline), the end of prone positioning (time P).

Locations

Country Name City State
China Zhongshan Hospital of Fudan University Shanghai Shanghai

Sponsors (1)

Lead Sponsor Collaborator
Shanghai Zhongshan Hospital

Country where clinical trial is conducted

China, 

Outcome

Type Measure Description Time frame Safety issue
Primary Assess regional distribution of pulmonary perfusion To evaluate the effect of epidural block on pulmonary blood flow distribution. within 24 hours
Primary Assess oxygenation status To evaluate the effect of epidural block 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. within 24 hours
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