Atelectasis/ BUN & Creatinine ratio?!


Question: I'm 29 yrs old and was recently diagnosed with the above, 6 mm with diffuse borders. The pulmonary doc told me they will do another CT scan in one year.

She said she didn't know what the atelectasis came from, and referred me to another pulm doctor in the future to read the scan.

Then she said my bun/creatinine levels and ratio should get checked as well.

Since she wasn't big on explaining anything and is no longer my specialist, what could this mean?


Answers: I'm 29 yrs old and was recently diagnosed with the above, 6 mm with diffuse borders. The pulmonary doc told me they will do another CT scan in one year.

She said she didn't know what the atelectasis came from, and referred me to another pulm doctor in the future to read the scan.

Then she said my bun/creatinine levels and ratio should get checked as well.

Since she wasn't big on explaining anything and is no longer my specialist, what could this mean?

Atelectasis is defined as a state in which the lung, in whole or in part, is collapsed or without air.[1] It is a condition where the alveoli are deflated, as distinct from pulmonary consolidation. Check link in wikipedia
In medicine, the BUN-to-creatinine ratio, also BUN-creatinine ratio, BUN/creatinine ratio or BUN:Cr, is the ratio of two serum laboratory values, the blood urea nitrogen (BUN) and serum creatinine. This terminology is used in the United States

Oh sorry, I meant to select the other poster as best answer... no offense taken hopefully! Report It

VeeBee's Avatar VeeBee
The reason I sent you to wikipedia for definition is because of statement about atelectasis "diagnosed with the above, 6 mm with diffuse borders. " Atelectasis is not a diagnosis, nor is 6mm with diffuse borders. More information is needed. Report It


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  • Tobias's Avatar by Tobias
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  • My guess would be that your doctor needs the BUN/Creatinine drawn simply to make sure when you have the follow-up CT, if they use an I.V. contrast, they need to be sure that your kidneys can handle the dye- and that is tested via the Creatinine levels in your blood.

    There may be some other reason it was ordered, but we order a Creatinine on all patients with renal insufficiency or anyone older than 35 who are slated to have I.V. contrast. That's protocol in the hospital I work at.

    Have a blessed weekend and a Merry Christmas :-)





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