Main aorto-pulmonary collateral arteries (MAPCA) are congenital malformations of main vessels when there is a direct communication between the aorta and the pulmonary artery system. As a rule, it is combined with other malformations of the heart and main vessels.

With the direct communication of the aorta and the pulmonary artery, the pressure in the pulmonary artery increases significantly, which leads to an overload of the right heart, pulmonary vascular sclerosis, and the development of severe heart failure.

With severe symptoms, the treatment of the defect is only surgical. Most often, a complex radical operation is performed. Transcatheter closure of the aorto-pulmonary collaterals can be performed as part of hybrid procedures to minimize surgical trauma, shorten the time of cardiopulmonary bypass and the overall time of surgery.

The use of a new generation of occlusive devices makes the closure of the aorto-pulmonary collaterals a low-traumatic operation that is easily tolerated by patients.