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Old 08-08-2012
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Lungs Pulsus paradoxus in asthma??

hey gys
i just read dat severe obstructv pulmonary diseases lik asthma cud lead to pulsus paradoxus!
could sm1 explain to me y??
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Old 08-10-2012
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hi!, its because the effort in the inspiration, push the boold into the right ventricle, pushing the ventricle septum againts the left ventricle. greetings!
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Old 08-10-2012
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Also read here
Pulsus Paradoxus versus Respiratory Arrhythmia

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Old 08-11-2012
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Default check dis video

tnx
i found dis video..check it out


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Old 08-23-2012
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when you inspired the diaphragm goes down and the intrathoracic pressure becomes positive. This leads to more blood into the right atrium, means more preload into the right ventricle and due to this it takes a little more longer for the pulmonic valve to close after systole. As your right ventricle has more volume is pushing the inter ventricular septum to the left so less amount of volume in the left ventricle lead to closure of the aortic valve first and a drop in the blood pressure due to less volume. This is physiologically normal but when than drop in blood pressure exceeds 10 mmhg is call pulsus paradoxus and anything the exaggerates inspiration can lead to pulsus paradoxus like asthma, obstructive sleep apnea and cardiac tamponade.
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Old 08-23-2012
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Help correct me if wrong

A/ because the hyperiflated lungs of asthmatics compress the vena cava

so increasing the caval pressure leading to Rv pressure overload

that restrict the av septum fom expanding fully during systole

thereby sys pressure lower than usual .
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