Konstantinos Letsas

Consultant Cardiologist-Electrophysiologist, Electrician of the heart.

[Konstantinos Letsas @K_Letsas]

@johnsoncardiol thank you !

[Konstantinos Letsas @K_Letsas]

We are delighted to announce the publication of our book, Mastering Supraventricular Tachycardia Diagnostics in the Electrophysiology Lab 
Credits to my co-editor @Kariki_O
My sincere thanks go to my colleagues and contributors!
https://t.co/jvpvIC3yLZ
#Epeeps

[Konstantinos Letsas @K_Letsas]

First combined AF ablation using the Affera™ System and left atrial appendage occlusion using the WATCHMAN FLX™ device at Onassis Hospital. Special thanks to Dr. Matthias Käunicke for proctoring the case!
@ipetemil @Kariki_O @athsaplaouras @MEfraimidis
#Epeeps

[Panagiotis Mililis @ipetemil]

Total venous occlusion → not a dead end.

ICD→CRT-D via venoplasty 🪡
Caravel MC · Pilot50 → ConfianzaPro12 · 4mm OTW ✅

w/ JMalakos @Kariki_O @athsaplaouras @SteliosDragasis @koskinastavrina @K_Letsas @MEfraimidis

#CIED #Venoplasty #CRTupgrade #EPeeps #OnassisHospital

[Konstantinos Letsas @K_Letsas]

Clinical Profile and Mode of Initiation of Spontaneous Ventricular Tachyarrhythmias in Patients With Brugada Syndrome (START-BrS) | JACC: Clinical Electrophysiology https://t.co/tokjJsNUDN

[Konstantinos Letsas @K_Letsas]

Same-day discharge after EP and CIED procedures. A clinical consensus statement of EHRA and ACNAP of the ESC.
Thank you @DanielScherr3 @giuliavogler
It was a pleasure to be part of this document.
#EHRA #ESC
https://t.co/WPmlAYGfsr

[NEJM @NEJM]

Correspondence: Digital Twin–Guided Ablation for Ventricular Tachycardia https://t.co/EyF2pI5pyI

#Cardiology

[Konstantinos Letsas @K_Letsas]

The “peeling back” effect of a PVC: the functional block can be resolved, given that the conduction is facilitated temporarily owing to the peeling back of the refractory period.
#epeeps #ecg

[Konstantinos Letsas @K_Letsas]

@alexdica69_diaz @Kariki_O @athsaplaouras @SteliosDragasis @ipetemil @koskinastavrina @MEfraimidis There is a picture and a video in the article that you can see the technique. It’s open access. Best

[Konstantinos Letsas @K_Letsas]

Modified Transseptal Technique Without Needle Puncture: Insights From a 4100-Procedure Registry.
@Kariki_O @athsaplaouras @SteliosDragasis
@ipetemil @koskinastavrina @MEfraimidis

https://t.co/YWnWlZWRPG

Onassis Hospital

[Konstantinos Letsas @K_Letsas]

@sciqst @Kariki_O @athsaplaouras @SteliosDragasis @ipetemil @koskinastavrina @MEfraimidis No major complications with the modified method. The most important part is stable engagement to the FO. There is a comparison to the traditional needle approach in the article which is free!

[NEJM @NEJM]

Among patients with atrial fibrillation at high risk for stroke and bleeding, left atrial appendage closure was not noninferior to medical therapy in reducing the risk of stroke, embolism, major bleeding, or death at 3 years. Full CLOSURE-AF trial results: https://t.co/qAMC2o36Mi

Editorial: Left Atrial Appendage Closure — Another Overused Method in Cardiology? https://t.co/KyOWdblUR3

[Konstantinos Letsas @K_Letsas]

Our latest study on the feasibility of functional substrate mapping with a novel lattice-tip catheter: implications for ventricular tachycardia ablation
@SteliosDragasis @Kariki_O @petros_skalidis
@athsaplaouras @ipetemil @koskinastavrina
@MEfraimidis
https://t.co/cXg1I1AJdZ

[Michail Efremidis @MEfraimidis]

Scar-related VT. Functional mapping with AFFERA system. Mid-diastolic potential. VT termination. @ipetemil @Kariki_O @athsaplaouras @SteliosDragasis @K_Letsas ⁦@koskinastavrina⁩ @PetrosSkalidis #Onassis Hospital #Affera

[HeartRhythm @hrs_journal]

Occupational hazards in cardiac electrophysiology: Insights from an HRS member survey
@KTamirisaMD, @SanaAlkhatib9, @jczerpa, @KennethEllenbo1, @TaraParham3, @Mel_Gunawardene, @DJ_Lakkireddy, @PrashSanders, @AndreaRussoEP
Free to all!
https://t.co/SfkCexOU5u

[John Mandrola, MD @drjohnm]

Rare are editorials this good. The asymmetry of risk is such an important concept. The topic below is lead extraction but @nntaleb notion of fat tails apply to many things in medicine.

Beware of absolute risk reduction probabilities.

https://t.co/lW3pLBX85W via @rdschaller

[HeartRhythm @hrs_journal]

New Iconic Figure by Douglas Zipes, MD, FHRS:
Concealed Wolff-Parkinson-White and the road not taken: The story behind “the V-on-H”

https://t.co/R7uweaIC1C

[Michail Efremidis @MEfraimidis]

One patient, three atrial tachycardias.
All mapped and treated with precision using Affera system
@ipetemil @Kariki_O @athsaplaouras @SteliosDragasis @K_Letsas @ Vasilis Michopoulos #Onasseio Hospital

[Konstantinos Letsas @K_Letsas]

The Role of Ventricular Arrhythmias Inducibility in Arrhythmic Risk Stratification in Arrhythmogenic Right Ventricular Cardiomyopathy: A Meta‐Analysis of Observational Studies - Bazoukis - 2025 - Journal of Arrhythmia - Wiley Online Library https://t.co/Pmv8DCLMq9

[Konstantinos Letsas @K_Letsas]

Stunning effect following PFA PVI leading to conduction block at the posterior wall of LA. Just stunning or something more?
@SteliosDragasis @Kariki_O @athsaplaouras
@ipetemil @koskinastavrina @Panagiotis_Gkn @MEfraimidis
#Onassis Hospital #Epeeps