Percussion (medicine)
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Percussion in medicine is a diagnostic technique used by healthcare professionals to assess the condition of the thorax and abdomen. This method involves tapping on a surface to determine the underlying structure. Percussion is a key component of the physical examination and is used to evaluate the presence of fluid, air, or solid masses beneath the surface of the body.
History[edit | edit source]
The technique of percussion was first described by Leopold Auenbrugger in the 18th century. Auenbrugger's method was initially used to assess the lungs and pleura for pleural effusion and other conditions. His work laid the foundation for modern clinical examination techniques.
Technique[edit | edit source]
Percussion is performed by placing a finger of one hand on the body surface and striking it with a finger of the other hand. The sound produced by the tapping can indicate different conditions:
- Resonant: Normal lung tissue produces a resonant sound.
- Dull: A dull sound may indicate the presence of a solid mass or fluid, such as in pneumonia or pleural effusion.
- Hyperresonant: A hyperresonant sound may suggest the presence of excess air, as seen in conditions like pneumothorax or emphysema.
Applications[edit | edit source]
Percussion is used in various medical fields, including:
- Pulmonology: To assess lung conditions such as pneumonia, pleural effusion, and pneumothorax.
- Gastroenterology: To evaluate the presence of ascites or organomegaly in the abdomen.
Limitations[edit | edit source]
While percussion is a valuable diagnostic tool, it has limitations. The accuracy of percussion can be affected by the skill of the examiner and the patient's body habitus. Additionally, percussion may not detect small or deep-seated abnormalities.
See also[edit | edit source]
References[edit | edit source]
- Auenbrugger, L. (1761). Inventum Novum. Vienna: J.T. Trattner.
- Bates, B. (2013). Bates' Guide to Physical Examination and History Taking. Philadelphia: Lippincott Williams & Wilkins.
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Contributors: Kondreddy Naveen, Prab R. Tumpati, MD