A long-term follow-up study of percutaneous stent implantation for residual pulmonary artery stenosis after complicated congenital heart disease
10.3760/cma.j.cn112434-20231119-00120
- VernacularTitle:经皮支架置入治疗复杂先天性心脏病术后残余肺动脉狭窄的远期随访
- Author:
Xu HUANG
1
;
Yifan LI
;
Bingyu MA
;
Ling SUN
;
Junjie LI
;
Jijun SHI
;
Shushui WANG
;
Zhiwei ZHANG
;
Yumei XIE
Author Information
1. 广东省心血管病研究所 广东省人民医院心儿科，广州 510080
- Keywords:
Children;
Congenital heart disease;
Pulmonary stenosis in children;
Stent implantation;
Long-term follow-up
- From:
Chinese Journal of Thoracic and Cardiovascular Surgery
2024;40(6):355-361
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the long-term safety and effectiveness of stent implantation for residual pulmonary artery stenosis after complicated congenital heart disease.Methods:The symptoms, signs, echocardiography, cardiac CT, cardiac catheterization, six-minute walking distance, and BNP of 41 patients diagnosed from January 1996 to January 2020. In this group, 41 patients, 30 males and 11 females, aged 1.3-14.5 years old, mean (6.1±3.6) years old, and weighed 8-43 kg, mean (18.9±9.4)kg, compared the diameter of the target vessel, pressure difference across stenosis, cardiac function before and postoperative follow-up, and evaluated the long-term effect of stent implantation in the treatment of pulmonary artery stenosis.Results:All 41 patients were not lost to follow-up, no death, and there were no serious adverse events such as stent fracture, artery dissection and pulmonary embolism during follow-up. The median follow-up time was 7.1 years (3.1 to 13.8 years). As of January 2023, the echocardiographic results showed that the diameter of the target vessels in 41 patients increased from preoperative (3.9±1.5) mm to (6.0±1.5) mm ( P<0.05), the pressure difference across the stenosis decreased from preoperative (51.4±19.1) mmHg to (33.1±19.7) mmHg (1 mmHg=0.133 kPa, P<0.05); Heart spiral CT showed that the ratio of target vessel diameter to distal vessel diameter increased from preoperative 0.4±0.2 to 0.9±0.3( P<0.05). All patients had no slow growth and development, no recurrent lung infection, 39 patients (95.1%) had gradeⅠcardiac function, and 2 patients (4.9%) had gradeⅡcardiac function.As children in school age, the walking distance of 6 min was 462 to 633 m, mean( 529.9±57.1)m, the respiratory score was 0.5-1, and the lower limb force score was 6-12. There were 5 long-term adverse events, including 4 cases of target vessel restenosis (9.7%), and 1 case (2.4%), two of the patients with restenosis with repeated target vessel stenosis and lateral pulmonary hypertension were surgically intervention: stent removing and pumonary expanding, after 4, 13 years of stent implantation.And the others were still in follow-up, and no further intervention was made. The Cox multivariate survival analysis suggested that right ventricular systolic blood pressure was a risk factor for endpoint events before stent implantation ( P<0.05). Conclusion:The treatment of residual pulmonary artery stenosis after complicated congenital heart disease after percutaneous stent implantation can effectively relieve the right heart pressure overload, improve pulmonary blood flow, stabilize cardiac function, improve the long-term prognosis of patients with complicated congenital heart disease, reduce the chest opening rate of reoperation, and have stable long-term curative effect.
