Surgery was discarded due to the patient’s critical condition and low body weight. Emergency cardiac catheterization with stenting was attempted to reduce the risk of early re-coarctation. Ultrasound-guided percutaneous access was used via right carotid artery (4-Fr introducer sheath). The angiography performed confirmed the critical preductal aortic coarctation and the ductus arteriosus (figure 1, video 1 of the supplementary data) with a 3.2 mm underdeveloped transverse arch and a 4.5 mm distal and diaphragmatic aorta. A 4 mm × 16 mm coronary stent was implanted, the distal transverse arch was slightly oversized, and the left subclavian artery was crossed resulting in the uneventful angiographic resolution of the coarctation (figure 2, video 2 of the supplementary data). Gradients were not measured due to the patient’s unstable condition.