Helpful to break down the cerebral circulation. One "correction"...A venous clot from a DVT should not make it to the brain, but would rather go to the Lungs as a Pulmonary Embolism. That is unless you have a PFO in the the heart. Better to describe an embolus from the heart as an example. thanks for breaking things down!
Thank you so much for this video! I've been searching for an appropriate diagram that shows the circle of willis clearly and your video has been the best so far. :)
Thanks, it's easy to follow, and to the point. And I like how you sometimes show a little (almost childlike) excitement in your voice. It makes it fun and enticing to watch!
This is a great video! Just something to mention maybe in the beginning would be that the vertebral arteries first begin at the subclavian, and also pass through the foramen magnum before reaching the brain. This made everything so simple, thanks so much!
Great video, only thing is that a DVT will embolize to the lungs causing a pulmonary embolism. A systemic blood clot (i.e. left sided cardiac origin or arterial origin like the ICA) is the correct illustration for a stroke causing embolization.
Did you happen to make a video of the pathology that follows when the PCA and MCA/ACA gets blocked? That would be super useful. Thanks for this though.
Thanks! you made this so easy! If you use Visible Body too if you're watching this video you can see how it's in 'real life', because this is such a diagram. Great video!
hi publisher !, thanks for sharing this video it helped me to review. i heard on 15:40 min ''anterior cerebral , posterior cerebral'' should have been cerebellars.regards!
Yeap, we dont expect Venous Thrombosis to cause arterial thromboembolism...Nevertheless, this is still possible despite being uncommon, there is a phenomenon called 'Paradoxical embolism' where venous thrombosis can cause arterial thomboembolism thru a Patent foramen ovale
Jeremy 25% of autopsy findings demostrate a patent foramen ovale/small atrial septal defect. Therefore paradoxical arterial embolic phenomena is possible. Possible causes include: 1. an eisenmenger type picture whereby the pulmonary hypertension resulting from Pulmonary Embolus will see RAP > LAP resulting in shunt 2. chronic pulmonary hypertension 3.there is always the possibility of clot just by chance flowing via the PFO
At 15:06 you say cerebral artery instead of cerebellar artery. Question: visual,sensory, memory, motor involved; what part/s of the brain are responsible for this glitch?
Wouldn't that clot from the calf have gotten stuck in the lungs before getting to the main arterial circulation? Maybe an embolus from the left atrium due to AF could have been the case? :)
It would under normal circumstances unless you had a paradoxical embolus due atrial or ventricular septal defect and it bypasses the lungs going directly into the systemic circulation.
I'm quite aware of that but just thought I would point it out since this is a simple presentation and usually such presentations have examples of common complications! ^^
I will not go into the details of the commonly accepted social nuances or the way that most people would intrepet certain information in relation to its context. Making a very basic presentation for novice people in this subject and casually using a relatively rare example as the etioloy of the embolus tells me that there was a minor brain fart happening there. According to CJEM about 2% of arterial emboli are paradoxical.