Electrophysiologist, Post-op CV Surgical MD @STJOESHAMILTON& @HamHealthSci, PhD @HEI_mcmaster, Investigator @PHRIResearch. Husband, Human & Dog Dad

Joined January 2012
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Our work out today in @AnnalsofIM shows the importance of systematic follow up for patients with so-called “secondary” or “peri-operative” #AtrialFibrillation. 1 in 3 will have AF recurrence when assessed with 14 day Holter @McMasterU @PHRIresearch
Patients with new-onset atrial fibrillation during hospitalization face a surprising 1 in 3 risk of AF recurrence within 1 year, according to a new study. Findings highlight importance of vigilant monitoring and care. ow.ly/VGFG50PSwmZ #AtrialFibrillation #HeartHealth
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William F McIntyre retweeted
Annoying hit that causes the infield to lose braincells? Ernie clement is there Go ahead ridiculous HR off a nearly unhittable pitch location? Ernie clement is there Platinum glove, cooperstown plays in the infield? Ernie clement is there Monster playoff performance off every Yankee pitcher? Ernie clement is there Sleep paralysis demons hovering over my chest? It’s Ernie clement Dying in a hospital bed when I’m old and sick? Ernie clement is the nurse Ernie clement today Ernie clement tomorrow Ernie clement forever
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For a patient with new-onset trigger-associated #AF, how long do you need to monitor them in follow-up to find recurrent AF? Check out our open-access paper in @EJIM_journal tinyurl.com/4cbcsscc
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Very proud to have been part of this project. A very practical application of AI that should ultimately make diagnostics ambulatory ECG more accessible to patients.
10 Feb 2025
Everyone with an interest in AI, ECGs, or cardiology should read our paper out in Nature Medicine today! The DRAI MARTINI study tested the performance of DeepRhythmAI from #MEDICALgorithmics for direct-to-physician reporting of ambulatory ECGs. The results overwhelmingly favour the AI, with 14 times fewer missed diagnoses of critical arrhytmias. Read it here: nature.com/articles/s41591-0… Here's the study in brief: 🏥 >200,000 days of ECGs from >14,000 patients 🩺 >50 experts provided 3-cardiologist beat-to-beat consensus panel annotations of >5,000 ECG events 🖥️ Innovative study design provides absolute rates of missed diagnoses of AF or SVT ≥30s, 3rd degree block, 3.5s asystole or >10s VT Results: 🫀Missed diagnoses in 3.2/1000 patients by DeepRhythm and 44.3/1000 patients by techs 🫀Superior sensitivity (98.6% vs 80.3%) 🫀NPV >99.9% for DeepRhythmAI. This study is the result of an awesome collaboration with true leaders in the field who not only gave their scientific expertise but also committed many hours of their own time doing beat-to-beat annotations of >5,300 ECG events, with consensus annotation on every single beat. This resulted in an impressive author list including @EmmaSvennberg @SZDiederichsen @DrJasonAndrade @WFMMD @AlexanderPBenz @EPjeff17 @PlatonovPyotr @StavrosStavrak1 @Cardiaficionado @Dominik_Linz @JuanBenezet @PhilippKrisai @SanjeevBhavnani @AlirezaOraii @ManningerMartin and many more!
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Looking forward to being back at @IWASchool in January.
Dr. William McIntyre from McMaster U. presents at the International Arrhythmia School on combining antiarrhythmics & common cardiac meds for better patient outcomes! 🩺💊 ⚠️ Last week for lower registration—don’t miss out! Register: winterarrhytmia.com #Antiarrhythmics
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William F McIntyre retweeted
🚨 Join us at the 21st Annual International Arrhythmia School! We’ll cover arrhythmia management, advanced cardiology tech, device management, ablation therapy, & more. Thanks for your support—register today: winterarrhythmia.com See you there! Dr. Eugene Crystal, MD, FRCP(C)
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William F McIntyre retweeted
16 Dec 2024
🚨 FLASH SALE ALERT 🚨 Fellows, don’t miss out! Register for Arrhythmia Update 2025 at 50% off when you email AU25@eocihealth.com before Dec 23rd! For more information -> arrhythmiaupdate.ca Act fast to secure your spot! #AU25 #FellowsDiscount #Cardiology #MedicalEducation
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William F McIntyre retweeted
TInternational Arrhythmia School 2025! This is your opportunity to join leading experts and enhance your knowledge in arrhythmia and electrophysiology. 📅 Dates: Feb 7-9, 2025 📍 Location: Collingwood Conference Centre, Ontario Register winterarrhythmia.com @EugeneCrystal2
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William F McIntyre retweeted
In the ARTESiA trial 🔸31% of pts with AHRE progressed to clinical #AFib or AHRE >24h 🔸Outcome predictors: order age, HF, male sex, LA dilation, AHRE >1h @BorianiGiuseppe @WFMMD @PHRIresearch @Artesia_RCT @ESC_Journals @Dominik_Linz @DavidDuncker #ESCCongress
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I’m proud to mentor you @hargun__kaur! I can’t wait to see what you are going to do next!
I am humbled to have been recognized by a body that has honoured so many distinguished leaders, innovators, and clinicians. I couldn't be more grateful for the @CdnMedHallFame, my mentors @WFMMD and @MLevitan101, my family, and @McmasterUgme @machealthsci for believing in me!
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From @Artesia_RCT at #HRS2024 and in @JACCJournals: Device-detected subclinical CHA2DS2-VASc score >4: stroke risk 2.2%/yr. Clear benefit to OAC with apixaban No benefit with CHA2DS2-VASc score <4. Grey zone at CHA2DS2-VASc =4. @PHRIresearch @DCRINews
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Important new data from @Artesia_RCT presented by stroke neurologist @Ash_Shoamanesh at #ESOC2024. Pts with prior stroke and device-detected subclinical #AF have high stroke risk and get a large stroke-reduction benefit from apixaban @PHRIresearch
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I am grateful to the @ACCinTouch and the @SCC_CCS for the opportunity to attend the ACC Wael El Mahmeed Global Leadership Institute this week in Washington DC. I learned a lot and met a lot of great people from around the world.
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Look who I got to meet while waiting for the train to #EHRA2024. Great to chat with you in person, @bogdienache
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William F McIntyre retweeted
The results of B-Free are out! What's the bottom line? In ITT restricting intraoperative benzodiazepines did not (by a hair) reduce the incidence of postoperative delirium (aOR 0.92; 95% CI 0.84-1.01; P=0.07). HOWEVER...
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Today I really enjoyed meeting, philosophizing and chatting with the @drjohnm. We’ve done it a few times before digitally but never in person. Thanks to @EHRAPresident #EHRA2024 for providing a great forum for the exchange of ideas.
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William F McIntyre retweeted
🚨4 LBCTs you don't want to miss #EHRA2024! Mon 13.15-14.15 1⃣Novel single shot PFA for PVI @VivekReddyMD 2⃣Cryoablation for monomorphic VT @atulverma_md Tue 10.45-11.45 3⃣Insights form ARTESiA @WFMMD 4⃣Pooled analysis of SMART-AV & SMART-CRT trials
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1 in 3 pts with new-onset post-operative #AF after Cardiac Surgery will have AF recurrence within 1 yr of surgery, if monitored with an implantable loop recorder. What this means for the long-term management of these patients is unclear. New in @IJCardio shorturl.at/fuzC0

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Led by @McmasterUgme‘s @hargun__kaur. Grateful to our collaborators who made this possible. @ebelleycote @elhambidar @sandgren_emma @melchami99 @RichardWhitloc2 @brendantao @PHRIresearch @MaastrichtU @USherbrooke @emory_research @UCPH_Research @sheba_medical @UBC @HamHealthSci
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William F McIntyre retweeted
26 Mar 2024
#ICYMI: DOACs in Patients with Device-Detected AF #AHAJournals @WFMMD @RenatoDLopes1 @PHRIresearch @Artesia_RCT @johncamm @AlexanderPBenz
12 Nov 2023
#JustPublished #AHA23 #CIRCAHA23 In a meta analysis of 2 RCTS, DOAC use for device detected #AF was associated with⬇️risk of the composite of CV death, stroke, PE, arterial embolism and MI but⬆️risk of major bleeding @AlexanderPBenz @WFMMD #AHAJournals ahajrnls.org/49vaE9Y
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