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find Author "XIE Lin" 3 results
  • Mid-term follow-up of perventricular device closure of subarterial ventricular septal defect

    ObjectiveTo evaluate the mid-term safety, efficacy and feasibility of perventricular device closure for subarterial ventricular septal defect.MethodsClinical data of 97 patients diagnosed with subarterial ventricular septal defect through echocardiography in West China Hospital from September 2013 to December 2015 were retrospectively analyzed. There were 66 males and 31 females aged 3 (1.8, 5.9) years. All the patients underwent perventricular device closure under the guidance of transesophageal echocardiography using eccentric occlusion device. Possible complications such as residual shunt, valvular regurgitation, atrioventricular conduction block and arrhythmias were recorded during the 1-year, 3-year and 5-year follow-up.ResultsAll the patients received perventricular device closure successfully except that 1 patient underwent open surgical repair under cardiopulmonary bypass 3 months later because of the migration of device. So the rate of complete closure was 99.0%. No residual shunt, moderate or severe valvular regurgitation, atrioventricular conduction block or arrhythmias were observed 5 years later.ConclusionTreating subarterial ventricular septal defect through perventricular device closure exhibits remarkable mid-term efficacy, safety and feasibility with high success rate.

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  • Short- to mid-term outcomes of aortic valve plasty versus Ross procedure in children with severe aortic valve disease: A retrospective cohort study

    Objective To compare the short- to mid-term outcomes of aortic valve plasty (AVP) and Ross surgery in children with severe aortic valve disease. Methods The patients (aged<18 years) with severe aortic valve disease who underwent AVP (an AVP group) or Ross surgery (a Ross group) at the Department of Cardiovascular Surgery, West China Hospital from January 2019 to September 2023 were retrospective included. We compared perioperative and follow-up data between the groups. Results A total of 48 pediatric patients were included, including 28 males and 20 females, with an average age of (9.3±4.5) years. There were 25 patients in the AVP group, and 23 in the Ross group. Leaflet thinning (15/25, 60.0%) and leaflet extension (10/25, 40.0%) were the most common strategies used in the AVP group, while root replacement technique (12/23, 52.2%) and subcoronary technique (10/23, 43.5%) were the most frequently used strategies in the Ross group. There was no in-hospital death. The median follow-up time was 16.0 (7.0, 30.0) months. Peak flow velocity of the aortic valve was higher in the AVP group [2.0 (1.4, 2.9) m/s vs. 1.2 (1.0, 1.5) m/s, P<0.001], while there was no difference in the postoperative aortic valve regurgitation severity between the two groups (P=0.127). During follow-up, the overall reoperation rate and aortic valve reoperation rate were similar between the AVP group and the Ross group (8.0% vs. 13.0%, P=0.922; 8.0% vs. 0.0%, P=0.266). The rate of recurrent aortic valve disease was higher in the AVP group (52.0% vs. 4.3%, P<0.001), while further analysis failed to recognize any risk factors. Conclusion AVP and Ross procedure show similar perioperative safety, survival and reoperation rate. The rate of recurrent aortic valve disease is higher in the AVP group, but further investigations are needed to confirm the causes.

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  • Mitral valve management in hypertrophic obstructive cardiomyopathy and its controversies

    Hypertrophic obstructive cardiomyopathy (HOCM) is a relatively common hereditary cardiomyopathy, which is featured by asymmetric myocardial hypertrophy and dynamic left ventricular outflow tract (LVOT) obstruction. Other than septal hypertrophy, mitral valve abnormalities are also quite common in HOCM patients, and they also contribute to systolic anterior motion of the mitral leaflets and LVOT obstruction. Septal myectomy is believed as the standard surgical treatment for HOCM, but whether to perform mitral valve procedures at the same time of myectomy is still debatable. In this article, we thoroughly explained the mitral valve abnormalities in HOCM patients and their surgical corrections. Besides, we also explained the controversies over mitral valve procedures based on the current clinical studies.

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