I'll tell you that in practice it is hard to tell on a single cxr. A big heart is one big clue but often you have to look at the history and see what fits.
I came here cause a free diver dove down 230 feet down into the water gave the okay sign then when he resurfaced he passed out and never regained consciousness because of this!
Thank you so much. I Have a question, does vascular redistribution mean that upper lobes' vessels will have a similar diameter to lower poles' ones?. Wouldn't the blood that regurgitated from the heart occupy the lower poles of the lungs first leading to a vascular congestion in these poles before being able to leading to a similar thing in the upper poles? and if so, wouldn't the diameter of the lower poles' vessels increase first keeping the diameter difference when upper poles' vessels increase in diameter in later stages? or is there anything that I'm missing?
I get what you are saying, but it seems that no, that is not what happens. I think that when the hydrostatic pressure in the lower lungs increases sufficiently, blood then goes to the lowest pressure area.
@@ThoracicRadiology I see, Thank you. I finished my 3 weeks Radiology block 3 days ago and your videos were a great help for me any my colleagues, Thank you so much for helping us through our learning journey.
Pulmonary Edema and Asthma - Bad combo? By the time the person passes out and then foams at the mouth are they dead? Will CPR work? Or should O2 be administered? Lost a good friend recently coming up from a short 5 minute scuba dive this way.
On a radiograph, the veins will be dilated and fuzzy. You won't be able to see the vessels at the microscopic level that I drew, that is only for illustration purposes to understand what is going on.
