Adolescents with severe cardiogenic shock can present to both paediatric and adult centres. We present six adolescent children who had extracorporeal membrane oxygenation consultation fast-tracked with clinical care input from the adult multidisciplinary team, including interhospital transfers on extracorporeal membrane oxygenation. After recovery on conventional cardiogenic shock care or extracorporeal membrane oxygenation, or bridge to transplant, all had favourable neurologic outcome.

Ductal stenting has transformed the care of neonates with ductal-dependent critical CHD, especially in low-income countries. In small infants, a 3.5- or 4-mm stent may lead to too much pulmonary blood flow resulting in pulmonary oedema. We herein presented a novel technique to restrict ductal stent flow in a premature neonate with pulmonary atresia and intact ventricular septum following radiofrequency perforation of the pulmonary valve.

Heritable thoracic aortic aneurysms are complex conditions characterised by the dilation or rupture of the thoracic aorta, often occurring as an autosomal-dominant disorder associated with life-threatening complications. In this case report, we present a de novo variant, MFAP5 c.236_237insA (p.N79Kfs9), which is implicated in the development of inherited thoracic aortic aneurysm. The proband, a 15-year-old male, presented with recurrent cough, dull chest pain, chest distress, vomiting, and reduced activity tolerance, leading to the diagnosis of heritable thoracic aortic aneurysms. Whole-exome sequencing identified a novel heterozygous variant in MFAP5 (NM_003480, c.236_237insA, and p.N79Kfs9). MutationTester and PolyPhen-s predicted this variant to be damaging and disease-causing (probability = 1), while the SFIT score indicated protein damage (0.001). Structural analysis using the AlphaFold Protein structure database revealed that this mutation disrupted the N-linked glycosylation site, resulting in a frameshift, amino acid sequence alteration, and truncation of an essential protein site. To our knowledge, this is the first case report describing a young patient with heritable thoracic aortic aneurysm carrying the novel MFAP5 c.236_237insA (p.N79Kfs*9) variant. This variant represents the third identified mutation site associated with heritable thoracic aortic aneurysm. Given the high mortality and morbidity rates associated with thoracic aortic aneurysms, the prevention of severe and fatal complications is crucial in the clinical management of this condition. Our case highlights the importance of whole-exome sequencing and genetic screening in identifying potential pathogenic or likely pathogenic variants, particularly in early-onset patients with aortic dilation, to inform appropriate management strategies.

Duchenne muscular dystrophy is characterised by fibrofatty replacement of muscle, resulting in dilated cardiomyopathy. Hypertrophic cardiomyopathy affects 1:200–1:500 people and is characterised by asymmetric ventricular septal hypertrophy. To date, there have been two separately reported cases describing the combined pathology of these disorders. Herein, we expand upon these reports with a case series describing longitudinal findings in three patients with Duchenne muscular dystrophy who developed hypertrophic cardiomyopathy.

Malnutrition is common among paediatric heart failure patients, with nutritional rehabilitation critical for survival and optimal health outcomes. Ventricular assist devices have been associated with improved growth, though additional nutritional support may be needed. Here, we report the use of human milk-based fortifiers to avoid severe malnutrition in a neonate supported on a ventricular assist device until transplantation.

Left ventricular tumour is a rare condition in children. The causes include vegetations, thrombus, and fibroma. 2-year-old asymptomatic female presented with an innocent heart murmur at 6 months of age. Subsequent follow-ups at 18 months of age showed left ventricular mass. Surgical pathology revealed “nodular fasciitis.” This type of tumour has never been described in the heart before.

We report a case of an alternative transcatheter use of the modified Medtronic microvascular plug to modify fenestration stent flow in a patient with a rapidly deteriorating clinical condition. This four-year-old boy developed severe cyanosis following fenestration stent insertion, initially placed due to prolonged drainage post-Fontan with extra-cardiac conduit. In April 2023, he underwent urgent cardiac catheterisation and had partial occlusion of fenestration stent with a modified 9Q microvascular plug. His oxygen saturations improved from 50 to 89% in room air with no re-emergence of raised cavopulmonary pressures.

According to the modified World Health Organization classification, pregnant women with unrepaired aortic coarctation are at very high risk for both maternal and fetal complications and should, therefore, be counselled against pregnancy. The most frequent maternal complications include systemic hypertension, renal failure, preeclampsia, and aortic dissection. Herein, we describe a successful pregnancy in an adult patient with unrepaired aortic coarctation.

Unilateral absence of intra-pericardial pulmonary artery is a rare congenital malformation. If untreated, it can lead to morbidity and mortality in adulthood. Early intervention and restoration of physiologic pulmonary blood flow is necessary. Transcatheter stenting as initial intervention has been rarely reported. We present transcatheter recanalisation and stenting of the obliterated ductus in two newborns with unilateral absence of intra-pericardial pulmonary artery with cross-sectional imaging, procedural details, angiography, and follow up to surgical repair. We believe that such procedure promotes ipsilateral pulmonary vasculature growth to facilitate unifocalization surgery at a later age.

Majority of coronary artery fistulas are of the congenital origin, and they have been rarely reported after congenital heart surgery. Here, we present echocardiographic images and prognosis of multiple acquired coronary artery fistulas occurring after surgical myectomy in a child diagnosed with double-chamber right ventricle complicated with infective endocarditis involving the right heart valves.

We present a 2-month-old girl with chondrodysplasia punctata in whom bilateral peripheral pulmonary artery stenoses were successfully treated by transcatheter balloon angioplasty. The minimal diameters of the right and left pulmonary arteries of 1.3 mm and 1.1 mm, respectively, which were dilated using a 4-mm balloon catheter. Balloon angioplasty is feasible and effective for relieving peripheral pulmonary artery stenosis in patients with chondrodysplasia punctata.

Transcatheter closure has become a common treatment method for patent ductus arteriosus in premature infants at many centres; however, many remain uncertain about the ability to perform the procedure in the catheterisation laboratory for infants requiring high-frequency ventilation. This study presents our centre’s experience following the implementation of neonatal ventilatory guidelines, which resulted in 100% procedural success without any procedural or respiratory adverse events.

Myocarditis is an inflammatory disease of the heart muscle that most commonly occurs after infectious diseases in childhood. The clinical picture of acute myocarditis ranges from asymptomatic infection to fulminant heart failure and sudden death (1). Most of the patients may present with nonspecific symptoms such as respiratory distress, chest pain, nausea, and vomiting (2). While rhythm abnormalities such as ventricular and supraventricular rhythm disorders can be observed in these patients, various degrees of atrioventricular blocks may rarely develop (3). In this article, we aimed to present a patient who developed second-degree, high-grade atrioventricular block after myocarditis and recovered completely after treatment.

KCNT1 mutations are associated with childhood epilepsy, developmental delay, and vascular malformations. We report a child with a likely pathogenic KCNT1 mutation (c.1885A>C, p.Lys629Glu) with recurrent pulmonary haemorrhage due to aortopulmonary collaterals successfully managed with coil embolisation followed by right upper lobectomy.

Coronary anomalies occur in 0.2% to 1.2% of the population, with the anomalous aortic origin of the coronary arteries accounting for one third of these cases. Clinical presentations can vary from asymptomatic to experiencing cardiac symptoms and sudden death, making diagnosis challenging. In this report, we present a novel artificial intelligence-supervised vectorcardiographic analysis and the subsequent successful surgical treatment of a young patient.

Hypertrophic cardiomyopathy in children has diverse causes. Mitochondrial diseases, a rare aetiology leading to cardiomyopathy in 20–40% of affected children, predominantly present as hypertrophic cardiomyopathy. Diagnosis is challenging due to inconsistent genotype-phenotype correlation, resulting in various clinical presentations. We present a case of a one-month-old infant with severe hypertrophic cardiomyopathy and cardiac tamponade. Genetic diagnosis revealed a Valyl-tRNA synthetase 2 (VARS2) gene mutation, linking it to mitochondrial encephalopathy-cardiomyopathy. This case highlights novel variants and expands the understanding of hypertrophic cardiomyopathy aetiology in infants.