Technical Details of Rechanneling of Obstructive Coronary Sinus Type of Totally Anomalous Pulmonary Venous Connection Using Malm’s Coronary Sinus Cutback Technique and Left Atrial Augmentation: A Video Presentation Ujjwal K. Chowdhury 1 Niwin George 1 Sushamagayatri B. 1 Balaji Chandhirasekar 1 Shikha Goja 1 Nagasai Manjusha 1 Niraj Nirmal Pandey 2 Poonam Malhotra Kapoor 3 1 Department of Cardiothoracic and Vascular Surgery, Cardiothoracic Sciences Centre, All India Institute of Medical Sciences, New Delhi, India 2 Department of Cardiac Radiology, Cardiothoracic Sciences Centre, All India Institute of Medical Sciences, New Delhi, India 3 Department of Cardiac Anaesthesia, Cardiothoracic Sciences Centre, All India Institute of Medical Sciences, New Delhi, India J Card Crit Care 2022;6:219–221. Address for correspondence Ujjwal K. Chowdhury, MCh, Diplomate NB, Department of Cardiothoracic and Vascular Surgery, All India Institute of Medical Sciences, New Delhi 110029, India (e-mail: ujjwalchowdhury@gmail.com). Introduction Totally anomalous pulmonary venous connection accounts for 1.3 to 3% of cases of chronic heart disease. 1,2 Infants born with totally anomalous pulmonary venous connection have a generally unfavorable prognosis, with only 50% surviving beyond 3 months and 20% surviving the first year of life. 3–5 Hazelrig et al analyzed data from 183 autopsied cases of surgically untreated totally anomalous pulmonary venous connection reported in the literature. 6 Median survival was Keywords ► left atrial augmentation ► Malm’s coronary sinus cutback technique ► rechanneling of obstructive coronary sinus ► totally anomalous pulmonary venous connection Abstract Obstructive coronary sinus totally anomalous pulmonary venous connection although rare, is associated with a high mortality. A 2-month-old female child diagnosed with obstructive coronary sinus type of totally anomalous pulmonary venous connection and severe pulmonary arterial hypertension underwent complete unroofing of the coronary sinus by the “coronary sinus cutback technique” of Malm with left atrial augmentation and atrial septal fenestration. DOI https://doi.org/ 10.1055/s-0042-1759806. ISSN 2457-0206. © 2022. Of ficial Publication of The Simulation Society (TSS), accredited by International Society of Cardiovascular Ultrasound (ISCU). All rights reserved. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/ licenses/by-nc-nd/4.0/) Thieme Medical and Scientific Publishers Pvt. Ltd., A-12, 2nd Floor, Sector 2, Noida-201301 UP, India THIEME Technical Note 219 Article published online: 2022-12-03