robin082006
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List some diseases that it may be present!
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| msyamp
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it is absent pulse in inspiration due to a very low (more negetive) intrathoracis pressure.or fall in bp >10mm hg
seen in emphysema
sever asthma
and due to compression of lv in pericardial diseases during insp
seen in pericadial effusin
tamponade
etc
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| sturge_weber
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u re right msyamp
ok one more q,
what is the other sign seen along with pulsus paradoxus in pericardial effusion...
another q how do u differentiate pericardial effusion and constrictive pericarditis
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| cyra
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The other sign would be a raised JVP.A pericardial friction rub would also be heard.
No idea about this one.Although,i think there is mostly an element of effusion with constricitive pericarditis.
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| msyamp
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In constrictive pericarditis, the central venous and right and left atrial pressure pulses display an M-shaped contour, with prominent x and y descents
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| sturge_weber
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well for pericardial effusion we get the pulsus paradoxus and the kussumals sign
to differentiate them, there is a pericardial knock present in constrictive pericarditis
well i didnt know about the m shaped contour... of constrictive pericarditis
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| robin082006
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Here are some causes of Pulsus Paradoxus (copied)
Cardiac causes
1. Cardiac tamponade
2. Pericardial effusion
3. Constrictive pericarditis
4. Restrictive cardiomyopathy[4]
5. Pulmonary embolism
6. Acute myocardial infarction
7. Cardiogenic shock
Extracardiac pulmonary causes
1. Bronchial asthma
2. Tension pneumothorax
Extracardiac non-pulmonary causes
1. Anaphylactic shock (during urokinase administration)[5]
2. Volvulus of the stomach[6]
3. Diaphragmatic hernia[6]
4. Superior vena cava obstruction[4]
5. Extreme obesity
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