Guillermo Velazquez MD MSc

Hemodynamics and Interventional Cardiology. Passionate about complex PCI, intracoronary imaging and phisiology.

[Guillermo Velazquez MD MSc @GuillermoVGtzMD]

@pedro_cepas Pedro muchas gracias por todo! Nada de esto hubiera sido posible de no ser por amigos y profesionales tan grandes como ustedes! Llevo conmigo su recuerdo siempre! Espero verlos pronto. Mi eterno agradecimiento y admiración 🙌🙌🙌

[Pedro Cepas @pedro_cepas]

Un gran cardiólogo intervencionista vuelve a México 🇲🇽, mientras nosotros despedimos a una gran persona ❤️

No tengo ninguna duda que te irá muy bien @GuillermoVGtzMD 👏

[AHA Science @AHAScience]

Left ventricular systolic dysfunction is not uncommon in the ischemic stroke population with some studies showing between 5%- 25% with ischemic stroke in persons with a lower left ventricular ejection fraction (LVEF). https://t.co/Jgu23h0BQV

This scientific statement summarizes the latest evidence regarding the risk of incident and recurrent stroke in patients with LV dysfunction as well as best practice guidance regarding the management of this population after stroke.

✍🏼 @RichaSharmaMD @JimSiegler @LiverpoolCCS @JennaSkowronski

[Eduardo Flores-Umanzor @ejfu0209]

Congratulations to @GuillermoVGtzMD on completing his Advanced Interventional Cardiology Fellowship! It’s been a pleasure watching your growth and dedication. Wishing you all the best in this exciting next chapter. Good luck, my friend—you’ve earned it! 👏@Anthony18694706

[Guillermo Velazquez MD MSc @GuillermoVGtzMD]

@ejfu0209 @Anthony18694706 My friends, I’m truly going to miss you so much! Thank you for helping me achieve this dream. I will carry with me the values of hard work and dedication that you have taught me into every project I take on. I will be forever grateful to all of you!

[Belén Cid Alvarez @belcid7]

🔴 New consensus statement on transseptal puncture just published in @ESC_Journals ! A joint document from EHRA , HFA, EAPCI & EACVI covering indications, technique, imaging guidance, complications & complex scenarios. Essential reading for anyone performing structural heart interventions 🫀
https://t.co/RJv66McwKl

@EAPCIPresident @EACVIPresident @EHRAPresident @HFA_President @shci_sec @secardiologia @VDelgadoGarcia @santiagosergas @crfheart @idis_research @escardio @MPAOSS @OjedaOjeda18 @StructuralBCN @icruzgonzalez @jmmoreiras @JuradoRomanAl @SantiGestal @IreneTori @VictorJimRa6 @ramirotrillo

[AHA Science @AHAScience]

Building on the First Definition of Heart Failure, the Second Definition refines HF staging with sharper stage criteria, emphasizing early detection and individualized risk reduction and introduces the universal classification of HF causes, with explicit acknowledgment of geographic variation in HF risk and outcomes. https://t.co/YDuE4stb5s

This updated document provides a unified, internationally harmonized framework intended to standardize terminology. It addresses changes in disease manifestations, diagnostic strategies, and understanding of pathophysiology.

✍🏼 @MinnowWalsh @KarenSliwa @amibanerjee1 @BiykemB @akshaydesaimd @DukeHFDoc @MKIttlesonMD @lamcardio @WilfriedMullens @NutritionHF

[Giovanni Occhipinti @drgocchipinti]

Thanks to a large collaborative effort from 27 centers worldwide, we built the #LOFTER registry, collecting leaflet modification procedures to better understand procedural dynamics and outcomes of #leaflet #modification techniques to mitigate #coronary #obstruction in #TAVR patients.

We contributed to the dedicated issue on @JACCJournals, and results are available here.

https://t.co/Fm9yxtv8zR

More work ahead.

@AnderRegueiro

[Evandro Martins F. MD @evandrofilhobr]

Despite increasing use in complex PCI, rotational atherectomy through guide extension catheters has never been comprehensively reviewed.

Available now at Journal of Interventional Cardiology, our new open-access review summarizes the evidence, technical principles, indications, limitations, and practical tips for this niche but valuable technique.

Hope you find it useful.

https://t.co/UEqQzMGxri

@tomkaier @DrBIqbal @pmachado_gui @realarainmd @ricosuruagy @GEICC3 @marielle2l

#InterventionalCardiology #Rotablator #ComplexPCI #OpenAccess

[EuroIntervention @EuroInterventio]

How should DAPT be tailored after ACS?
This Clinical Consensus Statement synthesises the available evidence and offers a practical framework for selecting antithrombotic strategies based on bleeding and ischaemic risk after PCI.

https://t.co/EmxXmWACT2

@GianlucaCampo78
@TogeislerMD
@BruGig
@DrErikGrove
@sighalvo
@ElianoNavarese
@vlgmrc
@CVandenbriele
@ingo_ahrens

[EHJ Editor-in-Chief @ehj_ed]

A new definition of MINOCA: from infarction
to injury. https://t.co/bIKCDyXaAG A new @EHJ paper proposes a vital update to #MINOCA: Myocardial Injury (not Infarction) with Non-Obstructive Coronary Arteries. This shift perfectly captures the "working diagnosis" phase, preventing premature diagnostic labels before advanced imaging confirms the actual cause. @ESCardio @ESC_Journals #NonObstructiveCoronaryArteries

[Dr. Gilbert Tang @GilbertTangMD]

FINALLY HERE #JACCINT @JACCJournals in time for simultaneous publication at #NYValves2026! Our international group of #TAVR #TAVI experts convened to produce this Heart & Valve Collaboratory (H&VC) 2-part BEST PRACTICE document on REDO-TAVR, from concepts to planning to procedural execution to troubleshooting / complication mitigation. Hope you'll find the KEY PRACTICAL TAKEAWAYS useful in your daily practice encountering the growing volume of failed #TAVR. We look forward to producing an annual update as we publish more data and evidence on this topic, since no doubt the best practices will evolve with time.

Thank you to ALL THE CO-AUTHORS who collaborated on this monumental effort!

Part 1: Short-in-Short, Short-in-Tall
https://t.co/ho9A97XE3i
Full PDF here
https://t.co/bvcBrSGvBD
Supplement:
https://t.co/cLtsFMDbGw

Part 2: Tall-in-Short, Tall-in-Tall
https://t.co/GEWhbrGKmK
Full PDF here
https://t.co/thyAE3AEFD
Supplement:
https://t.co/Lzxwa1d78p

[Chiara De Biase @kiadeb87]

A unique solution for common dilemma! If you don’t know this page, take a look if you need tips for your daily practice in the cathlab. @pcronline https://t.co/bxPWJEfpHI

[Dr. Gilbert Tang @GilbertTangMD]

Welcome to our JUNE 17 issue of #JACCCaseReports @JACCJournals
https://t.co/HEW4oV2zlw

Full PDF here:
https://t.co/abzEtroMUl

@minnowwalsh
@hmkyale
@Justine_Turco

Coronary, Peripheral and Structural Interventions
Coronary Stent Abscess After Percutaneous Coronary Intervention: Diagnostic and Therapeutic Challenges
https://t.co/Wt9vLxqGne

Supra-Annular Transcatheter Aortic Valve Replacement Using Balloon-Expandable Valves in Bicuspid Anatomy With Extra-Large Annuli
https://t.co/HX5VkmEOEm

Hybrid Percutaneous Intervention for a Giant Saphenous Vein Graft Pseudoaneurysm
https://t.co/CMEmumoYrJ

Percutaneous Aspiration of a Large Pulmonary Valve Vegetation in a Nonsurgical Candidate: A Novel Approach
https://t.co/PBFJJiNpXO

Acute Changes in Coronary Microvascular Physiology After Supersaturated Oxygen Therapy in Anterior STEMI
https://t.co/Z86NohNJFb

TAV-in-TAV With Coronary Protection After Premature Valve Failure: The Second Time Is Not the Charm
https://t.co/uTxaSaoTql

A Novel Approach for Catheter Knots and Kinks Using a Grasping Device
https://t.co/kTTgbouiBB

Renal Denervation in Severe Neurogenic Dysautonomia: RANSOM Prospective Experience
https://t.co/SU7foYATgO

Heart Failure and Cardiomyopathies
Reverse Takotsubo Syndrome in Women During High Hormonal States Related to In Vitro Fertilization
https://t.co/s4YmZzoPod

Rapid Onset of Iron Overload Cardiomyopathy in Cirrhosis
https://t.co/OBfi8ptRtM

Catecholamine-Induced Cardiomyopathy Initially Misdiagnosed as Myocarditis in a Patient With Pheochromocytoma
https://t.co/0xMcpCh4rT

Cardiometabolic
When Myocarditis Isn’t Myocarditis: Unmasking Pheochromocytoma in the Cardiology Clinic
https://t.co/9S0IdVwv0a

Heart Failure and Cardiomyopathies
Residual Graft Pathology During CABG as a Minimally Invasive Diagnostic Pathway for Transthyretin Amyloidosis
https://t.co/hK7ydhBXqV

Takotsubo Cardiomyopathy Complicated by Complete Heart Block and LVOTO-Related Dynamic Mitral Regurgitation
https://t.co/6DzsjAEanD

Adrenaline, Takotsubo Cardiomyopathy, Anaphylaxis, and Kounis Syndrome (ATAK) Complex: Clinical Phenotypes, Differential Diagnosis, and Management
https://t.co/EbyHGkbQzi

Rhythm Disorders and Electrophysiology
Pulse-Field Ablation for Incessant Atrial Tachycardia Originating From the Left Atrial Appendage Apex
https://t.co/gAqVkXokgk

Refractory Malignant Arrhythmia in a 4-Year-Old Child With Short QT Syndrome: Persistence for Hope
https://t.co/1hcFSN6Mir

Beyond Quinidine: Clinical Lessons From a Child With Short QT Syndrome and Refractory Electrical Storm
https://t.co/tySrkyg2mu

Iatrogenic Pan-Right Atrial Denervation: Biphasic Autonomic Crash After Complex Scar-Related Flutter Ablation
https://t.co/i0GgnBpiXC

Lyme Carditis in a Transplanted Heart: A Rare Cause of Early Conduction Abnormalities
https://t.co/iuhxRTEJtk

Dual AV Nodal Non-Reentrant Tachycardia as a Suspected Cause of Tachyarrhythmia-Induced Cardiomyopathy
https://t.co/CCpNG4nS7u

Dual Atrioventricular Nodal Non-Re-Entrant Tachycardia: Unmasking the Diagnostic Challenges of an Electrocardiographic Chameleon
https://t.co/AxBFqrZo7w

Cardio-Oncology
Early-Onset Vitreous and Cardiac Amyloidosis With TTR Trp61Leu
https://t.co/3VPQGxwr04

Fluoropyrimidine Cardiotoxicity With Overlapping Vasospastic and Pericardial Features: A Diagnostic Challenge
https://t.co/hm456nXypk

Myopericarditis After Combined Idarubicin and Quizartinib in FLT3-ITD-Positive AML
https://t.co/Wk9g510K8C

Trabectedin-Associated Myocardial Infarction With Nonobstructive Coronary Arteries
https://t.co/TawpJQJdJ0

Critical Care and Resuscitation
Successful Sealing of Steam Pop–Related Left Ventricular Summit Perforation With Partial Impella Support
https://t.co/8gITmOtxFx

Suspected Adrenal Crisis–Associated Cardiogenic Shock Salvaged by VA-ECMO With Rapid Left Ventricular Recovery
https://t.co/5kuuYjGC2N

Pacemaker Lead Perforation Leading to Cardiac Tamponade and Subsequent Anterior STEMI
https://t.co/iUCjwMCMYb

Congenital Heart Disease
Unique Prenatal Diagnosis of a Coronary Sinus Aneurysm
https://t.co/dX0Iqnw4b0

Dilated Coronary Sinus in Fetus: A Marker With Multiple Causes
https://t.co/DZcbvjFtaa

Fetal Intervention Using an Everolimus-Eluting Stent in HLHS With Intact Atrial Septum
https://t.co/YjGjil8oi9

The Challenges of Fetal Atrial Septal Interventions in Hipoplastic Left Heart Syndrome
https://t.co/u0o60bHhTS

Imaging
Recurrent Pericarditis Evolving to Constrictive Pericarditis and Pericardiectomy Over 18 Years
https://t.co/vDbt7N29wJ

Giant Postischemic Left Ventricular Aneurysm Without Q Waves: Multimodality Imaging-Guided Surgery
https://t.co/LqVfQeMcin

When the Electrocardiogram Falls Silent: Rethinking Left Ventricular Aneurysm Detection in the Multimodality Imaging Era
https://t.co/SAYt0yHqPb

Ischemic Heart Disease
Myocardial Infarction With PFO: Distinguishing SCAD From Coronary Embolism
https://t.co/HhvgFcrMNH

@aroniskn
@CraigBasman
@JACabreraCardio
@MiChen__
@aabha_divya
@sarano_maurice
@MarcEngels7
@Miho_Fukui_
@ErikaHuttce
@Nishaki1
@MMarinCuartas
@ChrissyMD2000
@ACHDocTMoe
@PanjrathG
@jsaef1
@Kentso987
@TagliariPaula
@m_taramasso
@SyedZaidMD

Author’s handles:
@sharath618
@sbrugaletta
@anderregueiro
@GuillermoVGtzM
@Borlop89
@Guillermo_henl
@sbrugaletta
@GuillermoVGtzMD
@ibnsky
@davidharmonMD
@AtsushiOkada_12
@fabrizioricci
@kristiangalanti
@fabrizioricci
@athsaplaouras
@GeneticHeartDoc
@nilda_zavaleta
@sato_yanagisaw
@AllanLKleinMD1
@roumi_joseph
@AugustinCoisne
@hsuradi

[RTHahnMD @hahn_rt]

NEW ASE Recommendations for the Intraprocedural Imaging for M-TEER https://t.co/zwUucAIOiP @SLittleMD @ASE360 @JournalASEcho @ACCinTouch @SCAI @purviparwani @iamritu

[د. عبدالله البيروتي @aalbeirutty]

لكل طبيب وطالب طب..

لا تستخدم ChatGPT
لا تستخدم Claude
لا تستخدم Gemini

أخطاؤهم كبيرة ، وهلوستهم كثيرة ..

هنا جبت لك 6 منصات ذكاء اصطناعي طبية تقدر تستخدمها وانت واثق 🩺

[Gregor Leibundgut @swissCTO]

🔊 Proper IVL balloon prep matters!

Even small amounts of residual air can reduce sonic pressure by up to 20%. And remember: non-ionic contrast alone won’t work. IVL requires a saline-contrast mixture to generate shockwaves.

🎥 See the video for the correct technique.

[Carlos Collet MD PhD @ColletCarlos]

This year, we are launching a new program designed specifically for cath lab directors.

Join us for a full day dedicated to the leadership, strategy, and innovation needed to run a modern cath lab.

If you are a cath lab director, this day is for you.

Looking forward to seeing you at #TCT2026.

[Giuseppe Biondi-Zoccai @gbiondizoccai]

Welcome to the Ostial Stenting With Guide Extension Catheter Tip Technique: a novel approach enabling precise ostial and bifurcation stenting using a guide extension catheter https://t.co/Alfop7WzBQ @ccijournal

[FRANCESCO BURZOTTA @BURZOTTA_F]

The ideal puncture site can be identified only by echo!!!!! I think that transesophageal or intracardiac #echofirst guidance should become the only way to perform transeptal puncture!