Published online by Cambridge University Press: 10 April 2024
Over the years, so-called univentricular hearts represented one of the greatest challenges for surgical correction. All this changed with the advent of the Fontan procedure,1 along with the realization that it could become the final stage of the sequence of procedures used to correct lesions such as those included in the hypoplastic left heart syndrome,2 which previously had been beyond surgical repair. The overall group of lesions also posed significant problems in adequate description and categorization. Even these days, many continue to describe patients with a double inlet left ventricle as having a single ventricle, despite the fact that, with the availability of clinical diagnostic techniques producing three-dimensional datasets, patients with this lesion can be seen to have two chambers within their ventricular mass, one being large and the other small (Figure 9.1.1). The semantic problems with description can now be resolved by the simple expedient of describing the patients as having functionally univentricular hearts.3
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