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Heart failure is one of the most frequent reasons for hospitalization due to a cardiac event. In most instances, the main difficulty is how to accurately evaluate left ventricular filling pressure. It can be evaluated clinically, biologically and invasively. Although historically, invasive management has been the reference, it is being used less and less frequently and expertise in the technique is being lost. This paper discusses the strength and weaknesses of the different techniques for evaluating filling pressure in these patients, and the importance of this parameter for their optimal treatment.

The number of recreational scuba divers is steadily increasing. In its latest recommendations, the French Federation of Undersea Studies and Sports listed congenital heart disease as a formal and final contraindication to scuba diving. On the other hand, with the progress made in their management, the prognosis and quality of life of patients with congenital heart diseases have improved considerably, enabling them to engage in physical and sports endeavours, which are known to confer general health and psychological benefits. As a consequence, the ability of these patients to dive has become a regular and recurrent issue. We review the various types of scuba diving, the physical performance required for its practice, its effects on cardiovascular function and the elements that need to be considered before recommending whether it can be practiced safely at various levels of difficulty. Because of the diversity and broad heterogeneity of congenital heart diseases, a detailed evaluation of each patient's performance based on clinical criteria common to all congenital heart diseases is recommended.