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EIT-Guided Visual Feedback During Incentive Spirometry for Postoperative Atelectasis

NCT07681232 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2026-07-02

No results posted yet for this study

Summary

This single-center randomized controlled trial will evaluate whether real-time visual feedback from electrical impedance tomography (EIT) improves the immediate distribution of lung ventilation during incentive spirometry in adults with postoperative atelectasis. Approximately 60 participants will be randomized 1:1 to receive either EIT-guided visual feedback or standardized verbal guidance during one session of 30 incentive-spirometry breaths. The primary outcome is the change in dorsal ventilation fraction from before training to 5 minutes after training. Secondary outcomes include inspiratory capacity, ventilation homogeneity, dependent silent spaces, end-expiratory lung impedance, oxygenation, in-hospital intubation or reintubation, and intervention-related adverse events.

Conditions

  • Postoperative Atelectasis

Interventions

BEHAVIORAL

EIT-Guided Incentive Spirometry

Participants perform three sets of 10 incentive-spirometry breaths while viewing real-time electrical impedance tomography images. Trained staff provide standardized, target-directed feedback to increase ventilation in dependent dorsal lung regions.

BEHAVIORAL

Standardized Incentive Spirometry Guidance

Participants perform three sets of 10 incentive-spirometry breaths with the EIT screen concealed. Trained staff provide standardized verbal instructions on posture, slow sustained inspiration, a 2- to 3-second breath hold, and rest between breaths, without imaging feedback.

Sponsors & Collaborators

  • Shanghai Zhongshan Hospital

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-07-01
Primary Completion
2027-12-31
Completion
2027-12-31

Countries

  • China

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07681232 on ClinicalTrials.gov