科研之友
微信
新浪微博
Facebook
分享链接
摘要
Purpose: This study describes the preliminary experience of multidetector-row CT (MDCT) assessment of tortuous patent ductus arteriosus (PDA) for stent implantation in neonates with duct-dependent pulmonary circulation.
Methods: Seven neonates with pulmonary atresia and PDA initially diagnosed with echocardiography who were scheduled for MDCT for evaluation for stent implantation were reviewed. The PDA size measured on MDCT and catheter angiography, stent size and outcomes were studied. The patients' ages at stent implantation and hospitalization duration were compared with those in 14 patients with Blalock-Taussig surgical palliation.
Results: After MDCT, three patients were excluded from stent implantation; therefore, 4 neonates (1 girl, 3 boys; mean age, 12.8 days; range, 10-15 days) were included in the study. All four PDA appeared elongated and tortuous originating from the inferior surface of the aortic arch. The length of the tortuous PDA measured on angiography (mean, 13.8 mm; range 10.8 mm-15.8 mm) tended to be shorter than those measured on MDCT (mean, 15.0 mm; range 11.1 mm-17.1 mm). One PDA stent selected based on angiographic measurements was not adequate for total PDA coverage while the other three stents selected based on MDCT led to successful maintenance of pulmonary flow. Compared with patients underwent Blalock-Taussig shunt, patients underwent stent implantation were significantly younger (mean age 34.9 vs. 12.8 days, P = 0.018) and the hospital stay was significantly shorter (mean 63.5 vs. 20.0 days, P = 0.022). Follow-up MDCT clearly demonstrated the stent-related stenoses facilitating subsequent interventional treatment.
Conclusion: MDCT may be a considerable alternative method for assessing tortuous PDA in neonates with duct-dependent pulmonary circulation for stent implantation and is also useful for demonstrating stent-related complications.
- 出版日期2010-6
- 单位长春大学
