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The paper proposes a solution to the problem of distributing electricity originating from various sources. In the proposed model, each source has a different cost of acquisition and is characterized by varying energy efficiency factors. Additionally, in the case of renewable sources, the costs of storing energy are taken into consideration as well. This work presents a fair and cost-efficient approach to distributing the demands of energy providers. A model has been developed and verified for the purpose of corroborating the process.

A case is presented of a newborn with tetralogy of Fallot and aortic coarctation. Progressive right ventricular outflow tract (RVOT) obstruction required urgent surgical therapy. Coronary artery crossing the outflow tract made ventriculotomy impossible. Hybrid RVOT stent implantation was performed, providing effective pulmonary flow and enabling postponing of corrective jumping graft implantation.