Breath sound monitoring during general anesthesia
Official title: Analysis of Breath Sounds During Surgery
Run by Taipei Veterans General Hospital, Taiwan · NCT07280546 · Data updated 2026-11-12
This project will test whether continuous electronic stethoscope monitoring during general anesthesia can help detect abnormal breathing and support safer respiratory care for adults having elective surgery.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 20 Years and up |
| Sex | All |
| Enrollment | 30 (estimated) |
| Sponsor | Taipei Veterans General Hospital, Taiwan Government |
| Locations | 1 site (Taipei) |
| Status | Recruiting |
| Started | September 3, 2025 |
| Main results expected | February 28, 2026 |
| Study ends | September 30, 2026 |
| Registry record updated | December 12, 2025 |
| Trial ID | NCT07280546 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 20 or older with ASA physical status I-III scheduled for elective surgery under general anesthesia who can provide informed consent are ideal candidates.
✕Probably not a fit
Patients with chronic respiratory disease, prior airway surgery or anatomical airway abnormalities, or those unable to comply with study procedures are unlikely to benefit from this protocol.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
In this prospective observational project, electronic stethoscope sensors are placed on the anterior chest wall of 30 adults undergoing elective surgery under general anesthesia to continuously record breath sounds. Recordings are standardized for sampling rate, filtering, and sensor placement and are synchronized with routine intraoperative monitors including capnography, tidal volume, respiratory rate, pulse oximetry, and hemodynamics. Acoustic signals will be post-processed to extract quantitative features such as amplitude and frequency distribution and temporally correlated with clinically documented respiratory events. The dataset aims to determine whether acoustic patterns precede or coincide with episodes of respiratory compromise not captured by standard intermittent auscultation.
Why it matters
Potential benefit: If successful, this approach could enable earlier detection of abnormal breathing and improve perioperative respiratory safety.
How similar studies have gone: Preliminary feasibility work using electronic stethoscopes for continuous acoustic monitoring has been reported, but clinical utility remains preliminary and not widely validated.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Age ≥ 20 years * American Society of Anesthesiologists (ASA) physical status I-III * Scheduled for elective surgery under general anesthesia * Provided written informed consent Exclusion Criteria: * History of respiratory disease (e.g., COPD, severe asthma) * Previous airway surgery or anatomical abnormalities that interfere with breath sound assessment * Refusal to participate or inability to comply with study procedures
Where it's running
-
Department of Anesthesiology, Taipei Veterans General Hospital
Taipei, Taiwan Recruiting
Study contacts
- Principal investigator: Hui-Hsuan Ke, MD — Taipei Veterans General Hospital, Taiwan
- Study coordinator: Hui-Hsuan Ke, MD
- Email: kehuihsuan0221@gmail.com
- Phone: -886-939-196-809
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.