How to Measure Pulsus Paradoxus - (Real Patient!) - Stanford Medicine 25

Pulsus Paradoxus Video by the Stanford 25 Initiative, Stanford University Hospital, Stanford, California
This video was created with a real patient (with permission) who had a pericardial effusion causing cardiac tamponade physiology.

[@fastmohawk3903]

the most concise on how to simply and practically measure it:) thnx

[@yasmino.2193]

I now understand the concept. It was a simple explanation versus other videos that explain too much.

[@ttrdf]

I don't understand it, so I listen for krotkoff sound appearance, and then note the number and then I listen to the next number when the sound is absolutely continuous and if it's 10mmHg or more then it's pulsus paradoxus?

[@marcoshenrique5180]

ruclips.net/video/d4aCDhMvb0M/видео.html
It is easier to understand if you watch this video first. You hear the first sound normally as if you were taking the person's systolic pressure (SP), then the person keeps inhaling and exhaling normally (not forcefully) and, if the person has pulsus paradoxus, you will keep observing the silence (in other words, the lowering of BP) during inspiration even after a fall of 10 mmHg, which means that the LV's cardiac output is still being abnormally impaired. When the sound becomes continuous, in spite of inspiration, that's when the phenomenon has stopped and that is the pressure level you should compare to the SP.
Hope this helps, I had to explain to myself to understand it as well lol

[@amamuffin]

thank for the question, i did not understand it either w/o a more concise explanation :/

[@pepitobenegas]

I have the same question! This video is not clear at all!

[@lesleeperez2]

I know systolic and diastolic, but what is inspiration? the patient is breathing normal, not forcefully! so what does it mean droops 10 with inspiration?

[@pepitobenegas]

I mean It’s a great video but what do I do with those numbers other than 118/92 is not this the blood pressure only?

[@SagarPanta]

That's not the Blood pressure
The sound disappeared during inspiration at 118 but didn't disappear at 92 . Both of which are SBP . THE fall in SBP in this case is 26 mmHg during inspiration which is more than 10. So it's pulsus paradoxus.
It is actually exaggeration of normal physiological phenomenon. Even normally SBP falls during inspiration but the fall is less than 10 mmHg.
The paradox in pulsus paradoxus is that pulse won't be felt during inspiration even though heart sound are heard with stethoscope.

[@tavi9731]

what’s the difference between those two sounds
i’m confused

[@danforyou1]

Doesn't make sense