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Encyclopedia > Percussion (medicine)

Percussion is a method used by a doctor to find out about the changes in the thorax or abdomen. It is done by tapping on a surface to determine the underlying structure. It is one of the four methods of clinical examination: inspection, palpation, percussion and auscultation. It is done with the middle finger of right hand tapping on the middle finger of the left hand, which is positioned with the whole palm on the body. Diagram of a tsetse fly, showing the head, thorax and abdomen The thorax is a division of an animals body that lies between the head and the abdomen. ... The abdomen is a part of the body. ... In medicine, physical examination, or clinical examination, is the process by which the physician investigates the body of a patient for signs of disease . ... Inspection in software engineering, refers to peer review of any work product by trained individuals who look for defects using a well defined process. ... Palpation is a method of examination in which the examiner feels the size or shape or firmness or location of something (of body parts when the examiner is a health professional). ... Auscultation is the technical term for listening to the internal sounds of the body, usually using a stethoscope. ...


2 types of percussion >direct percussion- using 1 or 2 finger >indirect percussion- using the middle finger/ flexor finger


There are four different percussion sounds:

  • sonorous
  • hypersonorous
  • relatively dull sound
  • completely dull sound

The presence of a solid mass underneath the surface will produce a dull sound. Hollow, air-containing structures will lead to a more sonore sound.


Percussion of the thorax

It is used to diagnose pneumothorax, emphysema and other diseases. It can be used to access the respiratory mobility of the thorax. In medicine (pulmonology), a pneumothorax or collapsed lung is a medical emergency caused by the collapse of the lung within the chest cavity. ... A disease or medical condition is an abnormality of the body or mind that causes discomfort, dysfunction, distress, or death to the person afflicted or those in contact with the person. ...


Percussion of the abdomen

It is used to find whether any organ is enlarged and similar. It is based on the principle of setting tissue and spaces in between at vibration. The sound thus generated is used to determine if the tissue is healthy or pathological. The method was initially used to distinguish between empty and filled barrels of liquor. In biology, an organ (Latin: organum, instrument, tool) is a group of tissues that perform a specific function or group of functions. ...


See also


  Results from FactBites:
 
Medicine - Encyclopedia, History, Geography and Biography (4529 words)
Medicine is the branch of health science and the sector of public life concerned with maintaining or restoring human health through the study, diagnosis and treatment of disease and injury.
Medicine as it is practiced now developed largely in the late eighteenth century and early nineteenth century in England (William Harvey, seventeenth century), Germany (Rudolf Virchow) and France (Jean-Martin Charcot, Claude Bernard and others).
Evidence-based medicine is a recent movement to establish the most effective algorithms of practice (ways of doing things) through the use of the scientific method and modern global information science by collating all the evidence and developing standard protocols which are then disseminated to doctors.
  More results at FactBites »

 
 

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