Epidural Block Impairs HPV During One-lung Ventilation: an EIT- Based Prospective Observation Study

NCT ID: NCT04730089

Last Updated: 2021-01-29

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Total Enrollment

50 participants

Study Classification

OBSERVATIONAL

Study Start Date

2020-08-01

Study Completion Date

2022-07-31

Brief Summary

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Define the effect of epidural block on HPV by EIT.

Detailed Description

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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.

Conditions

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Epidural Block Electrical Impedance Tomography

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

PROSPECTIVE

Interventions

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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).

Intervention Type DEVICE

Eligibility Criteria

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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
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Shanghai Zhongshan Hospital

OTHER

Sponsor Role lead

Responsible Party

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Ming Zhong

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Ming Zhong, MD, phD

Role: PRINCIPAL_INVESTIGATOR

Fudan University

Locations

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Zhongshan Hospital of Fudan University

Shanghai, Shanghai Municipality, China

Site Status RECRUITING

Countries

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China

Central Contacts

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Ming Zhong, MD, phD

Role: CONTACT

Phone: 021-65642662

Email: [email protected]

Facility Contacts

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Ming Zhong, MD, phD

Role: primary

Yuxian Wang, BSc

Role: backup

References

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Wang Y, Wei Y, Chen G, Wang Z, Fan Y, Wang J, Yang Y, Zhou D, Zhong M. The effects of thoracic epidural blockade on ventilation-perfusion matching during one-lung ventilation: An exploratory study. J Clin Anesth. 2024 Dec;99:111678. doi: 10.1016/j.jclinane.2024.111678. Epub 2024 Nov 6.

Reference Type DERIVED
PMID: 39504921 (View on PubMed)

Other Identifiers

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EB-EIT

Identifier Type: -

Identifier Source: org_study_id