Joel M. Topf, MD FACP Profile picture
Apr 9, 2022 16 tweets 8 min read Read on X
Slipped into the Optimizing antihypertensives medications selection in hemodialysis patients with Jennifer Flythe. #NKFClinicals
Audience response question.

The people chose fosinopril. #NKFClinicals
Treating blood pressure in HD reduces outcomes (just barely) #NKFClinicals
But we have no idea how low to go and we know that treating BP increases dialysis complications (cramps, nausea, hypotension) #NKFClinicals
Here are guidelines from Europe. No data to support these guidelines. Do not use on treatment blood pressures. #NKFClinicals
No evidence that loop diuretics lower blood pressure in dialysis patients but remaining on loop after starting dialysis reduced hospitalizations and nearly reduced death. #ObservationalData #NKFClinicals #NKFClinicals
ARCADIA trial from Italy. ACE/ARB vs non-RASi therapy. No difference in composite CV, Death, MI, stroke. No difference in BP #NKFClinicals
Now HDPAL Trial:
Atenolol more BOP lowering than lisinopril. Improved outcomes in atenolol compared to lisinopril. #NKFClinicals
ARCADIA vs HDPAL
She suggests that race differences may explain differences in outcomes between Italy and Indiana. #NKFClinicals
CCB
She argues, convincingly, that we should be looking at these drugs vs active controls rather than placebos. #NKFClinicals
Interesting and impressive spironolactone data #NKFClinicals
Dialyzability of common anti-hypertensives
She is concerned about the routine holding of blood pressure medications on dialysis days. #NKFClinicals
Interesting: @taraichang did a cluster RCT of holding anti hypertensive meds on dialysis days. Taking BP meds was non-inferior to holding antihypertensives. #NKFClinicals
What she does and recommends
Home blood pressure
Treat if interdialytic hypertension > 150 mmHg and avoids it is interdialytic SBP < 120.

#NKFClinicals
Despite the HDPAL she is a little nervous about beta blockers because of the frequency of Brady arrhythmias. #NKFClinicals
Summary slide #NKFClinicals

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More from @kidney_boy

Sep 21
Next session started by Rovin to talk about IGAN pathophysiology and the selection of therapeutics

4-hit model
1. formation of IGA galactose deficient
2. formation of autoantibodies against these IgA
3. Formation of circulating IgG-IgA1 immune complexes
4. Deposition of the immune complexes in the kidney

#RKDSummit
1st case
Hematuria on U/A
Gross hematuria after covid vaccine
10 RBC/HPF, no casts
Scar 0.9 mg/dl, 24-hr urine 750 mg of protein

#RKDSummit
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A bit “Juicy”
Mesangial expansion (arrows, fig 1)
Mesangial hypercellularity (circle, fig 2)
Biopsy has no chronicity (fig 3)
Lights up with C3 and IgA (fig 4)

#RKDSummit


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Read 35 tweets
Sep 21
Honored to be invited to second annual Rare Kidney Disease Scientific Summit. Amazing cast of physicians in attendance. #RKDSummit
Image
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Brad Rovin and John Barratt (IGAN king) defend the focus on IgAN and FSGS. Update and recap of the last year. #RKDSummit Image
Agenda look interesting.
Rovin says he is going to call out people from the audience. #RKDSummit Image
Read 21 tweets
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

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