Transverse arch stenting and its effect on systemic hypertension.

Background: This study aimed to investigate the safety and efficacy of transverse aortic arch stenting and evaluate the course of hypertension and the act of arch stenting on systemic hypertension. Methods: The transverse aortic arch stenting procedures between January 2007 and May 2023 were retrospectively analyzed. Detailed procedure information, technical aspects, pressure measurements, angiographic data, balloons and stents used, complications, and immediate results were examined. Early and mid-term results were assessed. Results: Eighteen patients (10 males and 8 females; mean age: 14.5±5.3 years; range, 4 to 23 years) were included in the study, all of whom were hypertensive before the procedure. The mean weight was 56.8±19.6 kg. In seven patients, the stent struts had to be dilated due to the stent causing jailing at the entrance of nearby arch vessels. After stenting, there was a significant increase in arch diameter and a decrease in ascending aorta pressure and the pressure gradient across the aorta. There were no early mortality or major complications. Late migration of the stent was observed in one patient. Three patients became normotensive immediately after the intervention, and five became drug-free during the follow-up. The requirement for dual antihypertensive therapy was significantly reduced. Conclusion: Residual transverse arch lesions may contribute to the persistence of systemic hypertension after coarctation treatment. Transverse arch stent implantation can be performed safely with favorable outcomes, facilitating better blood pressure control. However, it should be noted that these patients remain at risk for lifelong hypertension and should be closely monitored in this regard.