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 Guarding vs. Rebound  

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What do the following indicate:



i guess guarding as in during abdo examination abdo muscles are contracted and tensed due to underlying peritonitis ....

rebound tenderness - on deep palpation after removing palpating hand there is sudden pain which indicated peritoneal inflammation .....

correct me if i m wrong ......


Spasm or rigidity is the involuntary tightening of the abdominal musculature that occurs in response to underlying inflammation. Guarding, in contrast, is a voluntary contraction of the abdominal wall musculature to avoid pain. Thus, guarding tends to be generalized over the entire abdomen, whereas rigidity involves only the inflamed area. Guarding can often be overcome by having the patient purposely relax the muscles; rigidity cannot be. Rebound tenderness is increase in pain when you suddenly remove the hand after applying pressure, it is also for peritonitis, but better is percussion tenderness which implies the same but much less painful for the patient.

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