Migrated Avalon-Elite cannula in an infant transcatheter repositioning without interruption of ECMO flow.

Inadvertent migration of Avalon-Elite cannula in patients receiving veno-venous extracorporeal membrane oxygenation (VV-ECMO) support is often difficult to manage. Cannula repositioning conventionally requires temporary discontinuation of the ECMO support which is often poorly tolerated in small infants with poor pulmonary reserve. We reported a case of a small infant weighing 3.

Preoperative Venovenous Extracorporal Membrane Oxygenation for Transposition of Great Arteries With Severe Pulmonary Hypertension in a Newborn.

Severe persistent pulmonary hypertension in a newborn combined with transposition of great arteries increases the risk of early death before the arterial switch operation. We report the case of a newborn with transposition of great arteries and ventricular septal defect associated with severe pulmonary hypertension. Profound hypoxemia, despite successful balloon atrial septostomy and conventional supportive measures with mechanical ventilation, inhaled nitric oxide, and inotropes, led to the use of venovenous extracorporeal membrane oxygenation to rapidly stabilize the child preoperatively.

Duct Stenting Versus Modified Blalock-Taussig Shunt in Neonates With Duct-Dependent Pulmonary Blood Flow: Associations With Clinical Outcomes in a Multicenter National Study.

Background: Infants born with cardiac abnormalities causing dependence on the arterial duct for pulmonary blood flow are often palliated with a shunt usually between the subclavian artery and either pulmonary artery. A so-called modified Blalock-Taussig shunt allows progress through early life to an age and weight at which repair or further more stable palliation can be safely achieved. Modified Blalock-Taussig shunts continue to present concern for postprocedural instability and early mortality such that other alternatives continue to be explored.

Left ventricular contractile reserve in young adults long-term after repair of coarctation of the aorta.

We assessed the left ventricular (LV) contractile reserve in young adults with repaired coarctation of the aorta and interrupted aortic arch by determination of LV force-frequency relation (FFR). Eighteen (7 men) patients aged 24.2 ± 5.

Pseudohyperkalaemia with acute leukaemia: association with pneumatic tube transport of blood specimens.

Falsely elevated serum or plasma potassium level can be the result of mechanical injury to blood cells. We describe pseudohyperkalaemia caused by pneumatic tube transport of blood specimens from a patient with leukaemia. Clinicians should be aware of this possibility when interpreting the clinical significance of hyperkalaemia.

Arterial mechanics at rest and during exercise in adolescents and young adults after arterial switch operation for complete transposition of the great arteries.

We sought to determine the arterial mechanics at rest and during exercise in adolescents and young adults with complete transposition of the great arteries after arterial switch operation and their relations with neoaortic complications. Thirty patients (22 men) aged 16.2 ± 2.

Left ventricular contractile reserve after arterial switch operation for complete transposition of the great arteries: an exercise echocardiographic study.

Aims: This study tested the hypothesis that left ventricular (LV) contractile reserve is altered in patients after arterial switch operation (ASO) for complete transposition of the great arteries (TGA) by non-invasive determination of LV force-frequency relationship (FFR).

Methods And Results: Thirty-two patients aged 16.2 ± 2.

Transcatheter ablation of atrioventricular junctional re-entrant tachycardia in children and adolescents in Hong Kong: comparison of cryothermal with radiofrequency energy.

Objective: To compare the outcome of cryothermal and radiofrequency energy transcatheter ablation of atrioventricular junctional re-entrant tachycardia in children and adolescents.

Design: Case series with internal comparison.

Setting: Two hospitals in Hong Kong.