Letter from the Editor in Chief

DOI: 10.19102/icrm.2025.16072

Dr. DEVI NAIR, MD, FACC, FHRS

Functional Substrate Mapping of the Right Atrium: A Novel Method to Identify Critical Isthmus of Re-entry in Atrial Tachycardia

DOI: 10.19102/icrm.2025.16073

HIKMET YORGUN, MD,^1,2 CEM ÇÖTELI, MD,¹ GÜL SINEM KILIÇ, MD,¹ SAMURAY ZEKERIYEYEV, MD,¹ MUHAMMET DURAL, MD,³ and KUDRET AYTEMIR, MD¹

¹Department of Cardiology, Faculty of Medicine, Hacettepe University, Ankara, Turkey

²Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, The Netherlands

³Department of Cardiology, Faculty of Medicine, Eskişehir Osmangazi University, Eskişehir, Turkey

Direct Oral Anticoagulants Versus Vitamin K Antagonists in Patients with Atrial Fibrillation and Bioprosthetic Valve Replacement: An Umbrella Review

DOI: 10.19102/icrm.2025.16075

ALINA SAMI KHAN, MBBS,¹ ABDULLAH LNU, BSc, MBBS,² ZAIN UL ABIDEEN, MD,³ MUHAMMAD USMAN BAIG, MBBS,³ MUHAMMAD HUDAIB, MBBS,⁴ HAMMAD UR REHMAN, MBBS,⁵ NOREEN HAIDER, MBBS,⁶ SHAHZAIB KHALIQ, MBBS,⁶ SHIFA BATOOL,⁷ RIMSHA BINT-E-HINA, MBBS,⁸ NOOR MAHAL AZAM, MBBS,² SAHR SYED ASIF, DO,⁹ MAHIMA KHATRI, MD,¹⁰ and SATESH KUMAR, MD¹¹

¹Medical College, Liaquat National Hospital and Medical College, Karachi, Pakistan

²Rawalpindi Medical University, Rawalpindi, Pakistan

³Quaid-e-Azam Medical College, Bahawalpur, Pakistan

⁴Fazaia Ruth Pfau Medical College, Karachi, Pakistan

⁵Dow Medical College, Karachi, Pakistan

⁶King Edward Medical University, Lahore, Pakistan

⁷Hamdard College of Medicine and Dentistry, Karachi, Pakistan

⁸Dow University of Health Sciences, Karachi, Pakistan

⁹Kentucky College of Osteopathic Medicine, Pikeville, KY, USA

¹⁰Department of Medicine, Dow University of Health Sciences, Karachi, Pakistan

¹¹Department of Medicine, Shaheed Mohtarma Benazir Bhutto Medical College, Karachi, Pakistan

Electrogram Dynamics at the Site of Ventricular Tachycardia Termination During Radiofrequency Ablation

DOI: 10.19102/icrm.2025.16071

WISSAM HARMOUCH, MD,¹ ALI SAAD AL-SHAMMARI, MBChB,² MUHIE DEAN SABAYON, MD,³ ARUN NARAYANAN, MD,³ and HAIDER AL TAII, MD³

¹Department of Internal Medicine, University of Texas Medical Branch, Galveston, TX, USA

²Department of Internal Medicine, College of Medicine, University of Baghdad, Baghdad, Iraq

³Department of Cardiovascular Medicine, University of Texas Medical Branch, Galveston, TX, USA

Preserved Subcutaneous Implantable Cardioverter-defibrillator Function Following Septal Myectomy and Coronary Artery Unroofing in a Pediatric Patient with Severe Hypertrophic Cardiomyopathy

DOI: 10.19102/icrm.2025.16074

LEON PRZYBYLOWSKI, DO,¹ JOHN J. PARENT, MD, MSCR,² JEREMY L. HERRMANN, MD,³ and ADAM C. KEAN, MD, MPH²

¹Department of Pediatrics, Division of Pediatric Cardiology, The Ohio State University School of Medicine, Columbus, OH, USA

²Department of Pediatrics, Division of Pediatric Cardiology, Indiana University School of Medicine, Indianapolis, IN, USA

³Department of Surgery, Section of Cardiothoracic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA