Aortic stenosis is a heart valve disease that has a long latent phase, and difficulties appear in the advanced stage of the disease. Clinical symptoms manifest as syncope, angina pectoris or heart failure. The disease itself is proven by electrocardiogram, X-ray of the heart and lungs, ultrasound of the heart and characterization of the heart. The degree of severity of aortic stenosis is divided according to the involvement of the heart surface or according to the gradient. Treatment depends on the degree of aortic stenosis and the clinical picture and can be conservative or surgical. As aortic stenosis is a consequence of age-related degenerative diseases, the risk for this method of treatment is also high. Because of all the above, the transcatheter implementation of the aortic valve has found its application as a less invasive method in the treatment of aortic stenosis. The nurse participates in the preparatory actions related to the implementation of the procedure itself. Assists the doctor during the procedure and actively takes care of the patient before, during and after the procedure itself. They invests all their knowledge, experience and skills in preventing possible complications, making sure that if they appear they are minimized. Furthermore they educate the patient and their family on how to adjust to and lead a healthier lifestyle after discharge from the hospital