Evaluation of Ventilation Status by Mask Ventilation Using Electrical Impedance Tomography A

Evaluation of Ventilation Status by Mask Ventilation Using Electrical Impedance Tomography C - Evaluation of Ventilation Status by Mask Ventilation Using Electrical Impedance Tomography D

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000057398

Enrollment

100

Registered

2025-07-01

Start date

2025-04-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Patients who are scheduled to undergo surgery under general anesthesia and have no obvious respiratory disease.

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Disease name Subjects who are scheduled to undergo surgery under general anesthesia and have no obvious respiratory disease Stage, stage N/A Gender Male/Female Age 20 years old and over, 100 years old and under Those who can obtain consent from the patient himself/herself.

Exclusion criteria

Exclusion criteria: Patients with contraindications to EIT placement (patients with implantable cardioverter-defibrillators or pacemakers, patients with inflammation or wounds at the interface placement site, patients with spinal cord injury or fractures that pose a risk to the placement of the interface) Emergency surgery patients with obstructive or restrictive disorders (<70% 1 second rate orPercent lung capacity less than 80%) Patients with congestive heart failure NYHA III/IV

Design outcomes

Primary

Measure	Time frame
Expiratory terminal lung volumes in electrical impedance tomography during spontaneous breathing and mask ventilation	—

Secondary

Measure	Time frame
Compliance changes in EIT during spontaneous breathing and mask ventilation. Ventilation distribution by region of interest in EIT during spontaneous breathing and mask ventilation. End-expiratory lung volumes during mask ventilation and ventilatory management after induction of anaesthesia. Compliance changes during mask ventilation and ventilatory management after induction of anaesthesia. Ventilation distribution by region of interest during mask ventilation and ventilatory management after induction of anaesthesia. Other data that can be measured by EIT Comparison of data between operators performing mask ventilation. Factorial analysis of hyperventilation and hypoventilation (in this case, hypoventilation is defined as below ideal body weight x 6-8 mL/kg and hyperventilation as above ideal body weight). Actual ventilator values Blood pressure Heart rate SPO2	—

Measure

Time frame

Compliance changes in EIT during spontaneous breathing and mask ventilation. Ventilation distribution by region of interest in EIT during spontaneous breathing and mask ventilation. End-expiratory lung volumes during mask ventilation and ventilatory management after induction of anaesthesia. Compliance changes during mask ventilation and ventilatory management after induction of anaesthesia. Ventilation distribution by region of interest during mask ventilation and ventilatory management after induction of anaesthesia. Other data that can be measured by EIT Comparison of data between operators performing mask ventilation. Factorial analysis of hyperventilation and hypoventilation (in this case, hypoventilation is defined as below ideal body weight x 6-8 mL/kg and hyperventilation as above ideal body weight). Actual ventilator values Blood pressure Heart rate SPO2

—

Countries

Japan

Contacts

Public ContactTsubasa NAKAGAWA

Municipal Nagahama Hospital central operating room

tbs283@belle.shiga-med.ac.jp0749-68-2300

Outcome results