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Old 03-26-2013
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Question Why pericarditis pain on inspiration!

Why acute pericarditis sharp pain, aggravated by inspiration???
See first aid 275.

Anyone know why on inspiration? Why not expiration? And it is pericarditis..so whole heart should b involved actually..so how?
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in inspiration there is usually expansion of the pleural cavity ....so if it increase what would it naturally do ??? compress other structures nearby it ....and that it does ...the heart becomes a sandwich in between and it tries to compress the previously inflamed pericardium and making pain worse .....expiration relieves that compressive force and that in my opinion would not aggravate it
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and also the sharpest pain occurs when the both pericardium rubs against each other ....so inspiration cause compression ...the pleura rubs ...pain exacerbates ....expiration the pleura gets further apart and pain relieves
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Eh, shouldnt insipration decompress the heart??? It creates negative pressure. That is why on inspiration u have more venous return..im confused..
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Quote:
Originally Posted by bigBOSSguy View Post
See first aid 275.

Anyone know why on inspiration? Why not expiration? And it is pericarditis..so whole heart should b involved actually..so how?

chest pain is the one of the MC symptom of the acute pericarditis, usually sudden onset occurring in the anterior chest and pleuritic in nature, that is sharp and worsens with inspiration due to concomitant pleural inflammation, it may radiates to the back, to one or both of the trapezius edges. it is not associated with v/Q mismatch defect.

while Myocardial infarction can also causes the chest pain and dyspnea if left ventricular failure+pulmonary edema developed but is associated with matched defect on the V/Q scan.

Exudative Pleuritis:with significant pleural effusion can present with pleuritic chest pain and dypnea, pleural effusion may cause the atelectasis that's why it may present with the matched defect on the V/Q SCAN.

pulmonary emboli: presents with acute chest pain and dyspnea, mismatch defect on V/Q scan
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Quote:
Originally Posted by neha_subh View Post
chest pain is the one of the MC symptom of the acute pericarditis,usualy suden onset ocuring in the anterior chest and pleuritic in nature,that is sharp and worsens with inspiration due to concomitant pleural inflamation,it may radiates to the back,to one or both of the trapezius edges.it is not asociated with v/Q mismatch defect.

while Myocardial infarction can also causes the chest pain and dyspnea if left ventricular failure+pulmonary edema developed but is asociated with matched defect on the V/Q scan.

Exudative Pleuritis:with significant pleural efusion can present with pleuritic chest pain and dypnea,pleural efusion may cause the atelectasis thats why it may present with the matched defect on the V/Q SCAN.

pulmonary emboli: presents with acute chest pain and dyspnea,mismatch defect on V/Q scan
matched v/Q scan: ventilation defect anatomicaly matches the perfusion defect seen in colapse or consolidation while
mismatched V/Q scan: perfusion defect anatomicaly not matched with ventilation defect it indicates the ocluded flow to the segment of lung.
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Old 03-26-2013
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yeah i messed it up .....when ever there is pericarditis there is accompanied plerual inflamation ....and this pleural inflammation is exacerbated by inspiration, coughing and position change .
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