Joel M. Topf, MD FACP Profile picture
Aug 25, 2020 5 tweets 2 min read Read on X
How do the #NephJC pros follow a twitter chat?

They use Tweetdeck.com
When you launch Tweetdeck for the first time you will need to add a search column. Press the “+” and select the magnifying glass.
Then add “#NephJC” into the search field.
Then move that column all the way to the left by opening the settings panel (equal sign with two circles on it) and then press the “<“ to move the column to the left.
The last step is to make sure the compose window stays open by checking this box Image

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More from @kidney_boy

Apr 13
When we published our study <> of ODS and hyponatremia we were pummeled for including people at low risk of ODS because we included Na levels between 120 and 130. They said it is well known "that ODS is incredibly rare/non-existent at those levels." 1/4evidence.nejm.org/doi/10.1056/EV…
Of course one of the reasons it was thought to be incredibly rare was that no one looked for CPM in patients with Na from 120-130. We found a fair number (≤5 of 12). 2/4 Image
Our findings are replicated in a study from Australia. The authors took a different approach to investigating ODS. Instead of starting w/ hyponatremia and working forward to ODS, they started with a dx of ODS and worked backwards
3/4ncbi.nlm.nih.gov/pubmed/35717664
Read 4 tweets
Sep 17, 2023
Gadolinium in dialysis patients.
What's up with that?
#Tweetorial
1/11
Nephrogenic systemic fibrosis (NSF) is an iatrogenic disease that presents with hardening of the skin and other organs. It is often lethal. I treated 5 people with this condition (including one with AKI). Terrible.
2/11 Image
The etiology of NSF was unknown and there were many theories. In 2006, Thomas Grobner published a small case series showing 5 patients developing NSF within weeks of receiving gadolinium contrast for MRI.
3/11pubmed.ncbi.nlm.nih.gov/16431890/
Read 12 tweets
Aug 12, 2023
I just recently recommended the Renal Physiology book by Bruce Koeppen and Bruce Stanton. I thought it was a good medical student level text book: pbfluids.com/2023/08/ouwb-s…
But I came across this question in Chapter 8 Regulation of Acid Base. It is a straight forward question asking the learner to interpret simple acid-base cases. Image
But the question falls apart when you look at the answer... Image
Read 7 tweets
Apr 14, 2023
Lab guy from Yale up next Joe El Khoury He is on YouTube. Episode 1 was on pseudohyponatemia
209 subscribers. Clinical Chemistry with Joe El-Khoury Image
Here is the YouTube channel: youtube.com/@ClinChemJoe

https://t.co/LWupt0HWN1 #NKFClinicals
Despite calling it “laboratory error”, a lot of the problem happens long before the sample gets to the lab. #NKFClinicals Image
Read 9 tweets
Apr 14, 2023
Pseudohyperkalemia
Serum potassium is higher than plasma potassium. #NKFClinicals ImageImage
Sometimes Fist clenching
Sometimes Tourniquet
in the NEJM 1990 Image
Seasonal temp effects on potassium #NKFClinicals Image
Read 8 tweets
Apr 14, 2023
Michael Emmett on electrolyte artifacts
Pre-analytical and analytical #NKFClinicals Image
Starting with pseudohyponatremia
These are real cases
The osmolality was 294, so there is a huge gap. 44ish
Implies Artifactual decrease in sodium
Her triglycerides were >6000 #NKFClinicals Image
Note the different between HCO3 and tCO2 should be closer than 19 and 9. #NKFClinicals Image
Read 12 tweets

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