Introduction to the “Lung Sounds”
A Special thanks to Thinklabs Digital Stethoscopes for providing the following content
The below selection educational audio clips contain a variety of pulmonary related sounds recorded using. These samples are for illustrative purposes only and may not necessarily be diagnostic of the conditions represented.
Crackles—Bronchiectasis (in Adult)
Length: 0:10 minutes (212.15 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Crackles—Bronchiectasis (in Adult): Adult male patient 47 years old, recorded at lateral left of the chest. These are wet crackles, typical of bronchiectasis.
Sound Contributed by Alda Marques, PhD, Higher School of Health, University of Aviero, Portugal
Crackles and Wheezes—Bronchiectasis in a Patient with Cystic Fibrosis
Length: 0:23 minutes (453 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Bronchiectasis in a Patient with Cystic Fibrosis: 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.
Sound Contributed by Alda Marques, PhD, Higher School of Health, University of Aviero, Portugal
Crackles—Pulmonary Edema
Length: 0:09 minutes (193 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Crackles—Pulmonary Edema: Early inspiratory crackles and late inspiratory fine crackles. Patient on a ventilator with pulmonary edema.
Sound Contributed by Neale R. Lange, MD, FCCP, Assistant Clinical Professor of Medicine, University of Colorado Health Sciences Center, Denver, CO
Wheeze-Asthma
Length: 0:10 minutes (204 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Wheeze: Patient on a ventilator with inspiratory wheeze. This could be compatible with stenosis, mucous obstruction, tumor or foreign body obstruction.
Sound Contributed by Neale R. Lange, MD, FCCP, Assistant Clinical Professor of Medicine, University of Colorado Health Sciences Center, Denver, CO
Wheeze—COPD
Length: 0:07 minutes (143 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Wheeze—COPD: 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.
Sound Contributed by Doug Bails, MD; Kendrick Lopez, MD; and Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine
Rhonchi
Length: 0:10 minutes (200 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Rhonchi: Intubated patient with low pitched, atonal rhonchi. Note the difference between the rhonchi and the more musical, higher pitched wheezes.
Sound Contributed by 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)
Length: 0:10 minutes (211 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Rhonchi (In Patient with Uremic Pericarditis): There is a background pericardial rub and rhonchi can be heard as well.
Sound Contributed by Neale R. Lange, MD, FCCP, Assistant Clinical Professor of Medicine, University of Colorado Health Sciences Center, Denver, CO
Pleural Friction Rub
Length: 0:11 minutes (221 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Pleural Friction Rub: Friction rub—rough low-frequency sound. Inspiratory predominant. Sounds like rubbing two pieces of leather together.
Sound Contributed by Doug Bails, MD; Kendrick Lopez, MD; and Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine
Stridor—Infant
Length: 0:09 minutes (184 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Stridor—Infant: Infant, 7 months old. High-pitched inspiratory stridor consistent with epiglottitis or foreign body.
Sound Contributed by Debra L. Weiner, MD, PhD, Emergency Medicine, Children’s Hospital Boston, Harvard Medical School
Stridor (Laryngomalacia in Infant)
Length: 0:16 minutes (319 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Laryngomalacia—in an Infant: Infant, 5 weeks old. Inspiratory and expiratory sounds.
Sound Contributed by Debra L. Weiner, MD, PhD, Emergency Medicine, Children’s Hospital Boston, Harvard Medical School
Wheeze Bronchiolitis—7 Month Old
Length: 0:10 minutes (196 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Wheeze (Bronchiolitis): 7-month-old patient with bronchiolitis—soft mid-inspiratory wheeze and mid-expiratory wheeze suggests bronchiolar disease.
Sound Contributed by 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
Length: 0:07 minutes (145 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Pulmonary Associated Heart Sounds (PAH)—Split S2: There is a loud Split S2
heard with stethoscope in Diaphragm Mode placed at the left upper sternal border.
Sound Contributed by Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine
Pulmonary Associated Heart Sounds—Tricuspid Regurgitation
Length: 0:06 minutes (128 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Pulmonary Associated Heart Sounds—Tricuspid Regurgitation: Holosystolic murmur, heard with stethoscope in Bell Mode placed at lower left sternal border.
Sound Contributed by Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine
Normal Breath Sounds
Length: 0:14 minutes (289 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Normal Breath Sounds: 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.
Sound Contributed by Thinklabs Medical
Wheeze—Asthma
Length: 0:10 minutes (196 KB)
Format: MP3 Stereo 44kHz 160Kbps (CBR)
Wheeze—Asthma: Patient with asthma with an inspiratory and expiratory wheeze. The wheeze is musical with a well-defined pitch, visible on the spectrogram.
Sound Contributed by Doug Bails, MD; Kendrick Lopez, MD; and Michael Janjigian, MD, FACP; Division of General Medicine, Bellevue Hospital, New York University School of Medicine
