Computerized Lung Sound Analysis

This clinical trial is conducted within the research project 'Computerized Lung Sound Analysis'. The research goal is the development of a system enabling the automatic classification of lung sounds, which will result in a decision support system for physicians.

The objective of this trial is to create a small lung sound corpus, enabling the development of a prototype of the described system. Therefore, investigators record lung sounds with several lung sound transducers distributed on the posterior chest of human test subjects.

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Key information

Conditions

Pneumothorax Fibrosis Lung Diseases Lung Diseases, Interstitial Pathologic Processes Pathological Conditions, Signs and Symptoms Pleural Diseases Pulmonary Fibrosis Respiratory Tract Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Medical University of Graz

Graz, 8010, Austria

About this study

In this clinical trial investigators record lung sounds over the posterior chest of human test subjects. The subjects are either lung-healthy (control group) or subjects with pneumothorax condition or pulmonary fibrosis. The lung sounds are recorded in supine position on an examination table. A foam pad with several lung sound transducers is placed under the back of the subjects. During the recording the subjects wear a nose clip and hold a pneumotachograph with both hands. The subjects are instructed to breath at a certain airflow rate during inspiration, with natural breathing during expiration. For each subject investigators simultaneously record 30 seconds of the airflow signal and the lung sounds from 16 lung sound transducers.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

General:

Smoker and non-smoker
'Lung-healthy' subjects (control group), subjects with pneumothorax or subjects with pulmonary fibrosis

Additional for 'lung-healthy' subjects:

COPD < 3 (GOLD Criteria)

Exclusion criteria

General:

Body Mass Index > 30
Preceding thoracic surgery
Non-cooperation of the subject
Intubated or tracheostomized subjects

Additional for 'lung-healthy' subjects:

Disease of the respiratory system
Taking medication influencing the respiration

Treatment and study plan

Lung Sound Recording System

Device

The lung sounds are recorded over the posterior chest in supine position on an examination table. A foam pad with several lung sound transducers is placed under the back of the subjects. During the recording the subjects wear a nose clip and hold a pneumotachograph with both hands. The subjects are instructed to breath at a certain airflow rate during inspiration, with natural breathing during expiration. Therefore, they receive a real-time feedback for the airflow rate. The airflow signal and the lung sounds from 16 lung sound transducers are recorded simultaneously for 30 seconds.

Primary outcomes

16-Channel Lung Sound Recordings and synchronous Airflow Recording

Time frame: 30 Seconds

The lung sounds and the airflow signal are simultaneously recorded with the Lung Sound Recording System. One time frame contains several breathing phases. Depending on the lung disease normal lung sounds are either altered or adventitious lung sounds are superimposed.

Sponsors and collaborators

Lead sponsor

Smolle-Juettner Freyja, Prof MD

Other

Collaborators

Graz University of Technology

Registry information

Acronym: CLSA

Important dates

Study start: 2016
Primary completion: 2018
Study completion: 2018
First posted: May 13, 2016
Registry last updated: May 20, 2019

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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Completed