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Dana Johnson

@danacjohnson.medsky.social
430 followers 731 following 106 posts

Assistant Professor of Medicine Cardiac Electrophysiology. EP lab Director University of Illinois Chicago, Jesse Brown VA Medical Center. All posts are my own.

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Dana Johnson @danacjohnson.medsky.social · 16/05/2025
Do you really need that IV?
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Allison Gill @muellershewrote.com · 11/05/2025
"There's a reason you separate military and the police. One fights the enemies of the state, the other serves and protects the people. When the military becomes both, then the enemies of the state tend to become the people." - Commander William Adama, Battlestar Galactica
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Dr. Glaucomflecken @glaucomflecken.bsky.social · 09/05/2025
Amazing. UHC shareholders are suing because after the CEO shooting, the company was “no longer willing” to use “aggressive, anti-consumer tactics” to generate the profits they were promised. A gift from the content gods.
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Anna Pfenniger @apfenniger.bsky.social · 02/04/2025
Isolated HF atrial cardiomyocytes are definitely rock ‘n’ roll #basicscience #EPeeps @nmcardiovasc.bsky.social
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Dana Johnson @danacjohnson.medsky.social · 29/03/2025
@narrowqrs.bsky.social is making outstanding EP content for fellows, allied EP professionals and #Epeeps! Take a look at his channel!
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J.M. Cooper @narrowqrs.bsky.social · 17/03/2025
I get so stressed out when I post a new video, wondering if it will be effective or a huge flop. I hope this one is as helpful as I pray it will be 🙏 youtu.be/XykkZNLm9bc?...
youtu.be
VT Entrainment Mapping of Scar/Reentry VT
YouTube video by Dr. Joshua Cooper - Arrhythmia Education
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Heart Rhythm Society @heartrhythmsociety.bsky.social · 16/03/2025
The world of EP is coming together in San Diego for #HRS2025! Register now for cutting-edge science, world-renowned speakers, interactive sessions, and unrivaled networking, all in the beautiful #SanDiego sunshine. 🗓️ April 24-27, 2025 📍 San Diego Convention Center 🔗 Secure your spot: bit.ly/428A1wx
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J.M. Cooper @narrowqrs.bsky.social · 16/03/2025
🚨🚨🚨 New video alert! VT entrainment mapping (finally!!) Go nuts! (Get those Twitter stragglers over here to BlueSky!) youtu.be/XykkZNLm9bc?...
youtu.be
VT Entrainment Mapping of Scar/Reentry VT
YouTube video by Dr. Joshua Cooper - Arrhythmia Education
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Alex Turin @alexturinmd.bsky.social · 07/03/2025
SVT or VT? More to come... #EPeeps @danacjohnson.medsky.social @willyhfrick.bsky.social @amrish.bsky.social @rachelkaplanmd.bsky.social @narrowqrs.bsky.social @jeffreyvinocur.bsky.social
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Dana Johnson @danacjohnson.medsky.social · 07/03/2025
That’s a good one. I mean my gut was initially SVT given the similar axis and morphology but the onset I don’t see any p wave unless it’s like a double fire. I’d say put some catheters in. I suck at EKGs
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Dana Johnson @danacjohnson.medsky.social · 06/03/2025
Great question. I left it out, but history of radiation therapy to throat. Pretty astounding!
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Dana Johnson @danacjohnson.medsky.social · 05/03/2025
Next step is definitely pace ablate, he already has a CRT. Came in in sinus 🤯
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Dana Johnson @danacjohnson.medsky.social · 05/03/2025
So we paced at 20 all over. No capture anywhere. That scale is 0.05mV to 1.5 btw. He had an atypical flutter in the RA that we terminated and initially had some conduction over the CTI, so we blocked that. Wouldn’t recommend other targeted ablation in the future!
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Dana Johnson @danacjohnson.medsky.social · 05/03/2025
Those were my words exactly
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Dana Johnson @danacjohnson.medsky.social · 05/03/2025
I’m not sure even PFAing everything would replicate this! Patient with hx of Afib/AFL presented for De Novo ablation. #epeeps @uiccardsfellows.bsky.social @twing2.bsky.social @alexturinmd.bsky.social @davidjchang7.bsky.social @willyhfrick.bsky.social @shah.md
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Dana Johnson @danacjohnson.medsky.social · 01/03/2025
Nice suturing!
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Dana Johnson @danacjohnson.medsky.social · 21/02/2025
Thanks to @wgntv.com I had the opportunity to spread awareness about Atrial Fibrillation today! #epeeps wgntv.com/spotlight-ch...
wgntv.com
Raising Awareness of Atrial Fibrillation
February is Heart Month and UI Health is raising awareness of Atrial Fibrillation. The hospital’s specialized group of cardiologists focuses on helping patients with heart rhythm issues. Dr. …
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Dana Johnson @danacjohnson.medsky.social · 15/02/2025
Yeah. I always tell patients sometime it’s a chicken and egg/ myopathy/pvc question. Hard to know which came first
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Dana Johnson @danacjohnson.medsky.social · 15/02/2025
Interesting read.
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Dana Johnson @danacjohnson.medsky.social · 15/02/2025
I’ll check too, see if anyone will spill the beans early.
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Dana Johnson @danacjohnson.medsky.social · 15/02/2025
Yeah I don’t know if I’ve seen a parahis that I thought caused a myopathy. Have had several where the patient was very symptomatic and had to go after them 😬
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Dana Johnson @danacjohnson.medsky.social · 15/02/2025
Yeah I can’t go back so you hook it up ha ha
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Dana Johnson @danacjohnson.medsky.social · 15/02/2025
Anyone have the updated Instructions for Use? Would be nice to get some insights here @shah.md @davidjchang7.bsky.social @alexturinmd.bsky.social www.jnj.com/media-center...
jnj.com
Johnson & Johnson to Resume U.S. VARIPULSE™ Cases
Investigation found that VARIPULSE™ devices operate as intended Cases being performed in U.S. External Evaluation to resume and Instructions for Use to be updated
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Dana Johnson @danacjohnson.medsky.social · 15/02/2025
There are some studies suggesting the burden itself didn’t necessarily predict decline, I think morphology tended to contribute. Some data that in large numbers of patients, spontaneous regression occurs too. Just hard to know who will need ablation for high burden asymptomatic pvcs with normal EF.
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Nikhil Shah, MD, FACC, FHRS @handle.invalid · 15/02/2025
Great data presented in this study of >23k patients with AF from 2007-2021 regarding AAD use after ablation (46% after 1st), redos after index ablation (16%), RR of repeat ablation with various risk fx's (lsps AF vs pAF 2.26, AAD use 1.42, etc). Worth a read for #EPeeps www.jacc.org/doi/10.1016/...
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Dana Johnson @danacjohnson.medsky.social · 15/02/2025
Love the articles @shah.md Keep em coming. Also great meeting you IRL this week!
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Dana Johnson @danacjohnson.medsky.social · 15/02/2025
Looks retrospective so may be a causation/association issue as opposed to prospective assessment of impact? Good paper! @alexturinmd.bsky.social @davidjchang7.bsky.social
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Alexandre Bodin @bodin-ep.bsky.social · 14/02/2025
TAILORED-AF just published! #cardiosky
nature.com
Artificial intelligence for individualized treatment of persistent atrial fibrillation: a randomized controlled trial - Nature Medicine
In a randomized controlled trial in individuals with persistent atrial fibrillation, an individualized ablation procedure, in which areas with abnormal electrophysiological characteristics—as detected...
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Jason Andrade @drjasonandrade.bsky.social · 10/02/2025
I’m happy to share that DRAI Martini is now available online in Nature Medicine Artificial intelligence #AI out-performed trained technologists for direct-to-physician reporting of AECG - less missed diagnoses, better sensitivity, better NPV. www.nature.com/articles/s41...
nature.com
Artificial intelligence for direct-to-physician reporting of ambulatory electrocardiography - Nature Medicine
In a large-scale analysis of ambulatory electrocardiographic recordings, a deep learning algorithm had a substantially higher sensitivity for the detection of critical arrhythmias as compared to techn...
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Patrick Hickey, MD @pwhickey.bsky.social · 07/02/2025
Annual “insider threat” training is gonna be lit next year www.cnbc.com/2025/02/06/m...
cnbc.com
Staffer at Musk's DOGE resigns after racist social media posts exposed
Elon Musk is running DOGE, or the Department of Government Efficiency, for President Donald Trump, in an effort to slash government spending and staff.
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Dr Craig R McClain @drcraigmc.bsky.social · 29/01/2025
Somewhere in the U.S., there’s a scientist staring at their NSF/NIH grant application wondering why they bother. This post is for you. Science and society both need you. Hang in there and know there is a whole community supporting you.
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Dana Johnson @danacjohnson.medsky.social · 25/01/2025
Can’t see his signal but probably his synced terminated tach. Diagnostic for avrt. Delay also diagnoses, advancement shows pathway but doesn’t RO bystander. Strong work
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Dana Johnson @danacjohnson.medsky.social · 25/01/2025
Good stuff! @willyhfrick.bsky.social
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Richard Ferro, MD MSc @richferro.com · 18/01/2025
Attention #Medsky! We’re slowly rolling out the new .medsky.social handle. Like the labeler this is another way to show your colleagues you’re a part of the Medsky network, and what’s great is you don’t have to be subscribed to the labeler for people to see it! DM me to get your invite link!
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Salty AF @saltylungs.medsky.social · 19/01/2025
Thank you for hooking me up @richard.medsky.social! Flagging for all my other medsky friends ☺️
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Dana Johnson @danacjohnson.medsky.social · 18/01/2025
Enjoying my “annual death by mandatory hospital training modules” season.
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Nikhil Shah, MD, FACC, FHRS @handle.invalid · 18/01/2025
Beautiful dissection of an incredibly important anatomic region. This link works: www.jacc.org/doi/10.1016/...
jacc.org
Understanding Cardiac Anatomy and Imaging to Improve Safety of Procedures: The Atrioventricular Node Artery
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Evan Martow @martowmartow.bsky.social · 17/01/2025
Nice review of Farapulse PVI considerations www.heartrhythmjournal.com/article/S154...
heartrhythmjournal.com
How to perform pulmonary vein isolation using a pentaspline pulsed field ablation system for treatment of atrial fibrillation
One of the most significant recent advances in developing new technologies for the interventional treatment of atrial fibrillation (AF) has been the introduction of pulsed field ablation (PFA).1 PFA d...
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Dana Johnson @danacjohnson.medsky.social · 15/01/2025
Nice strip, hope the patient is ok!
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Dana Johnson @danacjohnson.medsky.social · 14/01/2025
I’ve had denials on almost every type of test or procedure in the last week
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Dana Johnson @danacjohnson.medsky.social · 14/01/2025
Is it just me or are health insurers in overdrive with denials, prior auths etc. in delaying access to care to kick off 2025? #Epeeps @alexturinmd.bsky.social @davidjchang7.bsky.social
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B Grrl @bgrrl.bsky.social · 11/01/2025
It's about time doctors had the courage to strike. Good for them. It will be better for everyone in the long run. Thousands of Providence Health Workers Strike in Oregon www.medpagetoday.com/special-repo...
medpagetoday.com
Thousands of Providence Health Workers Strike in Oregon
Largest strike involving healthcare workers in the state, first involving physicians
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Willy Frick @willyhfrick.bsky.social · 05/01/2025
Interesting ECG from the Muse reading queue that I'm unsure about. Heart transplant in 1998. Couldn't find op note, but suspect bicaval technique given date of operation. ECGs dating to 1998, none in this rhythm. 2:1 AV relationship, but the conducted PR changes after R4. What explains this?
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Dana Johnson @danacjohnson.medsky.social · 06/01/2025
Moms lead I?
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Dana Johnson @danacjohnson.medsky.social · 05/01/2025
It’s probably right at the wenkebach length, I don’t have calipers but it does seem to be slowly extending if you look at the short PR, which is a pseudointerval
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Dana Johnson @danacjohnson.medsky.social · 05/01/2025
Cool ekg. My guess is all are going down slow pathway but doubt if there is fast. After r4, you see p inscribed at r5. This p doesn’t conduct and so the conducted marches back with wenckebach. The short PR is not the conducted beat.
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Dana Johnson @danacjohnson.medsky.social · 03/01/2025
Me too
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Dana Johnson @danacjohnson.medsky.social · 03/01/2025
I’ve seen it a few times, one person had a hiatal hernia, not sure if it was related though
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Dana Johnson @danacjohnson.medsky.social · 01/01/2025
Giving me flashbacks.
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Dana Johnson @danacjohnson.medsky.social · 01/01/2025
My spirit animal Lemon on this NYE.
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