[Not Available].

During the last decades, the prognosis for patients with congenital heart disease (CHD) has gone through a tremendous development due to improvement in diagnostic tools, treatment, and follow-up. This has resulted in a demographic change of the population with CHD so that the number of adults exceeds that of paediatric patients. The improved survival has led to new challenges including re-interventions addressing residual lesions as well as long-term complications such as arrhythmia and heart failure. This has resulted in the development of novel catheter-based interventions e.g. percutaneous valve implantation, pulsed-field ablation, and lymphatic procedures as summarised in this review. Despite this, further developments are needed since morbidity and mortality are still significantly increased in patients with CHD compared to the background population.