Subcutaneous emphysema, a different way to diagnose.

Area of Science:

• Medical Diagnostics
• Clinical Examination
• Auscultation Techniques

Background:

• Subcutaneous emphysema (SE) involves air in soft tissues, often presenting as painless swelling in the chest or neck.
• The classic sign of SE is a crackling sensation upon palpation, similar to touching a sponge.

Purpose of the Study:

• To introduce and describe a novel method for diagnosing subcutaneous emphysema.
• To highlight the diagnostic potential of auscultation in identifying SE.

Main Methods:

• The method was discovered serendipitously while examining a patient with SE using a stethoscope.
• Gentle pressure of the stethoscope diaphragm on the affected skin allows for the detection of a unique sound.

Main Results:

• A distinct sound of small bubbles bursting is audible when the stethoscope is applied to skin with SE.
• This crackle noise exhibits high-frequency acoustic emission energy, ranging between 750-1,200 Hz.

Conclusions:

• This study advocates for the continued value of clinical examination, specifically auscultation, in diagnosing SE.
• The proposed method offers a simple, accessible, and potentially underestimated approach to SE diagnosis, complementing imaging techniques.