So your patient presents with dyspnea, now what? Place your stethoscope to the patient's chest.
What you hear | What it is | Possible Cause | Possible Diagnosis |
Coarse | Rhonchi. It is a low-pitched, continuous sound that is best heard on expiration. | Air moving through secretions in upper airway. May radiate through lung fields and be confused as a wheeze. | COPD, pneumonia |
Audible wheeze | Stridor, rhonchi | Adult: Secretions up airway, secretions near vocal cords, dehydration Child: Inflammation upper airway Child/ Adult: Secretions may pool in upper airway due to bronchospasm* | Adult: Wet Child: Croup Child/Adult: Asthma |
Sibilant wheeze (only heard by auscultation) | Wheeze. This is a high-pitched continuous sound heard on inspiration, expiration, or both. | Bronchospasm | Asthma, COPD |
Inspiratory and expiratory crackles (usually follow the path of gravity, if sitting or standing, will be in bases.** | Coarse Crackles or rhales. This is when crackles are heard on inspiration and expiration, and is the sound of air moving through fluid. | Fluid in lungs | Pulmonary edema, bilateral pneumonia May also be excessive secretions patient is unable to cough up |
Inspiratory/ end inspiratory crackles | Fine Crackles | Alveoli popping open with each breath | Pneumonia, COPD |
Diminished | Diminished | Poor air movement | Acute asthma, Emphysema |
Lungsound |
Treatment
|
Rhonchi
|
Pulmonary toilet if patient not expectorating on own. If expectorating, you monitor
|
Stridor |
Adult: Have patient cough, search for signs of heart failure (fluid overload, I&Os, etc.)
Child: Cool mist, racemic epinephrine
Child/Adult: Bronchodilator therapy |
Wheeze | Bronchodilator therapy, systemic corticosteroids |
Coarse Crackles |
Pulmonary Edema: Diuretics
Bilateral Pneumonia: Antibiotics
|
Fine Crackles (may be isolated to one lobe, or one segment of one lobe) |
Pneumonia: Antibiotics
COPD: May be normal for patient
|
Diminished |
Acute Asthma: Bronchodilator therapy, systemic steroids
Emphysema: May be normal for patient
|
Please note: I did not put bronchodilator down for the treatment of all the above adventitious lung sounds, only diminished and silent wheeze.
*Due to inability of patient to generate enough flow to expectorate.
** By the path of gravity, I mean if the patient is sitting, the fluid will be at the bottom of the lungs (the bases), and if lying on left side, the fluid will travel to the left side.
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