NCT07447232

Comparing Ultrasonic and Conventional Spirometry in Chronic Respiratory Disease

A Comparative Study of Ultrasonic and Conventional Spirometers in Patients With Chronic Respiratory Diseases

• Status: Not Yet Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 100 (estimated)
• Sponsor: Fu Jen Catholic University · Academic / Other
• Sex: All
• Age: 18 Years – 80 Years
• Healthy volunteers: Not accepted

Summary

This study compares a handheld ultrasonic spirometer with a standard hospital spirometer in adults with chronic respiratory diseases. Each participant will complete lung function tests using both devices. The study aims to determine whether the ultrasonic device provides accurate and reliable measurements for use in clinical or home settings.

Detailed description

This study aims to compare a new ultrasonic handheld spirometer with the standard hospital spirometer used in lung function testing. We want to find out whether the ultrasonic device can measure breathing strength and lung capacity as accurately and reliably as the traditional machine. Adults with chronic respiratory diseases-including COPD, asthma, bronchiectasis, and interstitial lung disease-will participate. Each participant will perform lung function tests using both devices in a randomized order. The results from the two methods will then be compared to see how closely they match. The goal of this study is to determine whether the ultrasonic spirometer can be used as a convenient alternative tool for lung function monitoring in clinics, community settings, or at home.

Conditions

• Chronic Obstructive Pulmonary Disease (COPD)
• Spirometry

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	Spirometer	The handheld ultrasonic spirometry device uses acoustic flow analysis to measure FEV1, FVC, and PEF and is evaluated for accuracy compared with the conventional spirometer. Participants may perform this test either before or after the conventional spirometry test, depending on the randomized crossover sequence.

Timeline

• Start date: 2026-03-02
• Primary completion: 2026-06-30
• Completion: 2026-07-31
• First posted: 2026-03-03
• Last updated: 2026-03-12

Locations

1 site across 1 country: Taiwan