Key result
Catheter ablation using a real-time ultrasound-assisted 3-D electroanatomical mapping system was successfully performed for an atrioventricular accessory pathway in a 1-year-old girl with criss-cross heart.
Case Report (n=1)
Demonstrates the feasibility of using real-time ultrasound-assisted 3-D electroanatomical mapping for catheter ablation in a pediatric patient with a rare congenital criss-cross heart.
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Supports feasibility of advanced mapping in rare pediatric congenital cases; leaves open need for validation in larger cohorts.
Criss-cross heart, defined as crossing of the long axis of the atrioventricular (AV) valves, is an extremely rare congenital heart defect. The unusual arrangement of the cardiac inlets observed in criss-cross heart was first described by Lev and Rowlatt1 in 1961. The term “criss-cross heart” was initially coined by Anderson et al2 in 1972. The reported incidence of criss-cross heart is no greater than 8 per 1,000,000 and accounts for <0.1% of congenital heart defects.3 According to the relationship of the AV connection, criss-cross heart is divided into 2 types: criss-cross heart with AV concordance is known as concordant criss-cross heart, whereas criss-cross heart with AV discordance is termed discordant criss-cross heart.
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Watanabe et al. (2016) conducted a case report in Criss-cross heart with atrioventricular accessory pathway (n=1). Catheter ablation using real-time ultrasound-assisted 3-D electroanatomical mapping system was evaluated on Successful catheter ablation. Catheter ablation using a real-time ultrasound-assisted 3-D electroanatomical mapping system was successfully performed for an atrioventricular accessory pathway in a 1-year-old girl with criss-cross heart.
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