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Lung Sounds Library

Thinklabs One Digital Stethoscope

The Lung Sounds Library is a reference collection curated by the Thinklabs Community, captured on Thinklabs stethoscopes, and recorded on smartphones.
Recordings using Thinklabs stethoscopes are used by online medical journals, medical schools, teaching hospitals, electronic medical textbooks, and many research institutions worldwide


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Normal Breath Sounds

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Normal breath sounds, recorded at left upper sternal border. First recording segment as heard with stethoscope. Second segment filtered to remove heart sounds and enhance breath sounds.
 
Contributor: Thinklabs Medical

Crackles and Wheezes—Bronchiectasis in a Patient with Cystic Fibrosis

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Adult male Cystic Fibrosis patient, 21 years old, recorded at lateral area of right thorax. Sounds consistent with accumulation of mucus and airway obstruction
as might occur with infection.
 
Contributor: Alda Marques, PhD, Higher School of Health, University of Aviero, Portugal

Crackles- Bronchiectasis

 

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Adult male patient 47 years old, recorded at lateral left of the chest. These are wet crackles, typical of bronchiectasis.

 

Contributor: Alda Marques, PhD, Higher School of Health, University of Aviero, Portugal

Crackles- Pulmonary Edema

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Early inspiratory crackles and late inspiratory fine crackles. Patient on a ventilator with pulmonary edema.
 
Contributor:  Neale R. Lange, MD, FCCP, Assistant Clinical Professor of Medicine, University of Colorado Health Sciences Center, Denver, CO

Pleural Friction Rub

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Friction rub—rough low-frequency sound. Inspiratory predominant. Sounds like rubbing two pieces of leather together.
 
Contributor: Doug Bails, MD; Kendrick Lopez, MD; and Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine

Pulmonary Associated Heart Sounds (PAH)- Split S2

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. There is a loud Split S2 heard with stethoscope in Diaphragm Mode placed at the left upper sternal border.
 
Contributor: Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine

Pulmonary Associated Heart Sounds- Tricuspid Regurgitation

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Holosystolic murmur, heard with stethoscope in Bell Mode placed at lower left sternal border.

 

Contributor: Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine

Rhonchi

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Intubated patient with low pitched, atonal rhonchi. Note the difference between the rhonchi and the more musical, higher pitched wheezes.

 

Contributor: Doug Bails, MD; Kendrick Lopez, MD; and Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine

Rhonchi (In Patient with Uremic Pericarditis)

 

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. There is a background pericardial rub and rhonchi can be heard as well.

 

Contributor: Neale R. Lange, MD, FCCP, Assistant Clinical Professor of Medicine, University of Colorado Health Sciences Center, Denver, CO

Stridor- Infant

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Infant, 7 months old. High-pitched inspiratory stridor in patient with croup. Stridor can also be heard with epiglottitis, tracheitis, retropharyngeal abscess and tracheal foreign body.

 

Contributor: Debra L. Weiner, MD, PhD, Emergency Medicine, Children's Hospital Boston, Harvard Medical School

Stridor (Laryngomalacia in Infant)

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope.

Wheeze

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Early inspiratory crackles and late inspiratory fine crackles.Patient on a ventilator with pulmonary edema.

 

Contributor: Neale R. Lange, MD, FCCP, Assistant Clinical Professor of Medicine, University of Colorado Health Sciences Center, Denver, CO

Wheese- Asthma

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Early inspiratory crackles and late inspiratory fine crackles. Patient on a ventilator with pulmonary edema.

 

Contributor: Neale R. Lange, MD, FCCP, Assistant Clinical Professor of Medicine, University of Colorado Health Sciences Center, Denver, CO

Wheeze- Bronchiolitis

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. 7-month-old patient with bronchiolitis—soft mid-inspiratory wheeze and mid-expiratory wheeze suggests bronchiolar disease.
 
Contributor: Doug Bails, MD; Kendrick Lopez, MD; and Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine 

Wheeze- COPD

LISTEN WITH HEADPHONES. Recording made with a Thinklabs One Digital Stethoscope. Patient with COPD with wheezing. There are dual components to this wheeze, which may suggest that the sounds are emanating from airways of different diameters.
 
Contributor: Doug Bails, MD; Kendrick Lopez, MD; and Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine 

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