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A 10-years-old boy presented with a history of effort intolerance and palpitations for 4 months. His electrocardiogram showed wide complex tachycardia suggestive of fascicular ventricular tachycardia (VT). The echocardiogram showed moderate-to-severe left ventricular systolic dysfunction without any structural lesion. The tachycardia was unresponsive to adenosine and direct current cardioversion. It responded to oral verapamil. The electrophysiology study confirmed the tachycardia as left posterior fascicular VT. The tachycardia was successfully ablated guided by Purkinje potential on three-dimensional mappings. He showed improvement in ventricular functions before discharge. He is doing well on short-term follow-up.

Aim & objective To report mid-term follow-up result of transcatheter closure of perimembranous Ventricular septal defect (VSD) in children weighing less than 10 kg using Amplatzer Duct Occlude-I (ADO-I) by left ventricular (LV) mid-cavity approach. Material & method This is retrospective review of 35 children weighing less than 10 kg with moderate to large perimembranous VSD who were selected for transcatheter closure of VSD using ADO-I in between October 2016 to September 2018. Mean age was 2.08 ± 0.67 years (mean ± SD) and mean weight was 7.2 ± 1.2 kg (mean ± SD). Procedure was done by crossing the VSD from right ventricular side instead of using the standard approach by forming arterio-venous loop. Average fluoroscopic time was 9.2 ± 2.9 min (mean ± SD) and mean procedure time was 34.1 ± 13.1 min (mean ± SD). Mean follow-up period was 8.7 months (3–12 months) Result Device closure was successfully done in 32 patients. There was device induced aortic regurgitation (AR) in one case who was sent for surgery. One child was found to have complete heart block on first post-procedure day requiring permanent pace-maker implantation. During follow up none of them had any residual VSD, rhythm disturbance, AR and left or right ventricular outflow obstruction. Conclusion Device closure can be successfully done in moderate to large perimembranous VSD using left ventricular mid cavity approach in small children. LV mid-cavity approach has advantages in terms of lesser hemodynamic instability, lesser fluoroscopy and lesser chance of device induced AR than standard technique particularly in smaller children.

Background: The standard first stage palliation for univentricular heart with unrestricted pulmonary blood flow (PBF) is surgical pulmonary artery (PA) banding for which the ideal age is within the first 8 weeks of life. This study aimed to look for the utility of PA band done beyond 3 months of age for patients presenting beyond the stipulated period. Materials and Methods: This is a retrospective analysis of the outcome of twenty patients with single ventricle (SV) physiology with unrestricted PBF who presented late and were selected on the basis of clinical, radiological, and echocardiographic parameters for PA banding. Results: The median age of the patients was 5.5 months (3.5–96 months), and the median body weight was 4.7 kg (3.2–22.0 kg). The patients were divided into three groups as follows: ten patients between 3 and 6 months of age (Group A), seven patients between 6 months to 1 year of age (Group B), and three patients > 1 year of age with additional features of pulmonary venous hypertension (Group C). The mean reduction of PA pressures following PA band was 60.9%, 48.8%, and 58.3% and the mean fall in oxygen saturation was 10.4%, 8.0%, and 6.6% in the three groups, respectively. The postoperative mortality rate was 10%. The mean follow up duration was 13.5 months (7–23 months). There was a statistically significant improvement in weight for age Z scores following PA band (P = 0.0001). On follow up cardiac catheterization, the mean PA pressures were 16.6 (±3.6), 22.7 (±5.7), and 33.3 (±12.4) mmHg, respectively, in the three groups, and the mean pulmonary vascular resistance index was 1.86 (±0.5), 2.45 (±0.7), and 3.5 (±1.6) WU.m2, respectively. Subsequently, seven patients in Group A, three patients in Group B, and one patient from Group C underwent successful bidirectional Glenn (BDG) surgery. Conclusions: Late PA band in selected patients with SV physiology can have definite benefit in terms of correction of heart failure symptoms and subsequent conversion to BDG and can potentially change the natural history of disease both in terms of survival and quality of life.

Introduction:Lifetech Konar-multifunctional occluder is a novel device which is primarily used for the closure of ventricular septal defects. Being “multifunctional”, the occluder has the potential to be useful in various structural cardiac defects.Materials and methods:We share our retrospective review from two centres regarding non-conventional usage of multifunctional occluders in CHD. Eight patients who underwent interventions using multifunctional occluders for lesions other than ventricular septal defects between March 2019 to September 2019 were included in the study. The patients were analysed based on demography, the size and type of lesion, procedural success, and development of complications. All patients were followed up in the outpatient department for a minimum period of 6 months.Results:The median age and weight of the cohort were 3.2 years and 9 kg, respectively. Six patients had patent ductus arteriosus, while one patient had aorto-pulmonary window and one had a coronary arterio-venous fistula. The sizing of the occluders and the procedural approach were based on the underlying pathology. The most commonly used occluder was 6 × 4 mm variant. One patient had successful implantation but had significant intra-device residual flow and was thus replaced by a different occluder. There were no major complications, nor any incidences of device embolisation or malposition. On follow-up, all patients had uneventful course.Conclusion:Konar-multifunctional occluder can be safely used in lesions other than ventricular septal defects, when needed under specific circumstances. Its unique characteristics make it a versatile choice in a variety of cardiac lesions.

A 7-month-old infant presented with bilateral blocked cavo-pulmonary anastomosis within 2 months of surgery. Due to extreme haemodynamic instability, surgical options were abandoned and rescue intervention from left jugular line was planned. Acute thrombosis of the left-sided Glenn was noted with significant anastomotic narrowing. Successful rescue thrombolysis was done using recombinant tissue plasminogen activator (Alteplase) along with balloon dilatation of the attenuated segments.

Total anomalous pulmonary venous connection (TAPVC) is a rare anomaly of pulmonary veins draining into the right heart with or without obstruction. Commonly the TAPVC is classified based upon the site of drainage viz. supracardiac, cardiac, infracardiac and mixed. Dual drainage of the common chamber of pulmonary veins communicating separately into the left innominate vein and coronary sinus is an extremely rare anomaly. We report a case of dual draining of the confluent chamber of TAPVC with obstruction at both the levels. The infant underwent successful re-routing of pulmonary venous confluence to the left atrium and is doing well on short term follow up.

Varying degrees of atrioventricular block are not uncommon following transcatheter closure of perimembranous ventricular septal defects. It is however extremely rare following use of Amplatzer duct occluder-II device. The onset of the atrioventricular block and understanding its underlying mechanism are important for successful management. We hereby report a case of delayed onset high-grade atrioventricular block following closure of a perimembranous ventricular septal defect using a duct occluder-II device where the rhythm reverted to sinus following high dose steroid therapy. Such delayed onset atrioventricular block following use of duct a occluder-II device has not yet been reported in literature.

Paravalvular leaks are common following valve replacement surgery. Majority are benign and do not require any active intervention. However, occasionally severe paravalvular regurgitation can produce heart failure and/or hemolysis, needing closure of the defect. It is more commonly associated with aortic and mitral prosthesis, symptomatic tricuspid paravalvular regurgitation being a rare entity. In this report we present the successful percutaneous transcatheter closure of a large paravalvular tricuspid regurgitation in a 59-year old lady with history of multiple previous operations. The elongated crescent-shaped defect was closed using two muscular VSD devices without any residual leak and without hampering the bio-prosthetic tricuspid valve function. Patient had transient complete heart block during the procedure which recovered later. There was marked improvement in the symptomatic status of the patient at discharge (NYHA IV to NYHA II), which was sustained at follow-up.

Anatomically corrected malposition of great arteries constitutes a rare form of congenital cardiac malformation where aorta and pulmonary artery arise from respective ventricles but the alignment of the great vessels does not conform to that of a normal heart. It often poses a diagnostic challenge due to a close resemblance to other great vessel malposition defects. The majority of the patients with this disorder are physiologically corrected and present due to associated lesions, most commonly ventricular septal defects. In this review, we present two children of anatomically corrected malposition who presented with hemodynamically significant ventricular septal defects. The older child had a restrictive defect and was successfully managed by percutaneous closure in-spite of associated septal malalignment. The younger child had a larger defect and underwent surgical closure for the same. None of the children had any associated outflow tract obstructions. Closure of ventricular septal defect with such an anatomy either surgically or by percutaneous route has its own set of challenges. Although the risks of conduction abnormalities are not increased, there is a potential for future development of outflow tract obstruction requiring periodic follow-up. Detailed echocardiography and proper understanding of the unique anatomy forms the basis of successful management of associated lesions in anatomically corrected malposition of great arteries.