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Immediate and Long-Term Results of Transcatheter Closure of Patent Ductus Arteriosus—Comparison of Two Decades before and after Change in Antibiotic Infective Endocarditis Prophylaxis Guidelines

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Congenital Heart Disease 2022年第2期17卷 215-230页

作者： Annina Dietrich Daniel Quandt oliver kretschmar Walter Knirsch Pediatric Cardiology Pediatric Heart CenterDepartment of Surgery and Children’s Research CenterUniversity Children’s Hospital ZurichZurichSwitzerland University of Zurich ZurichSwitzerland

Objectives:To determine immediate and long-term follow-up of transcatheter closure of patent ductus arteriosus(PDA)in children.Background:National antibiotic prophylaxis(AP)guideline for infective endocarditis changed after 2009,the effect on practice of PDA closure is unknown.Methods:Observational single center study analyzing follow-up of PDA closure comparing two time periods before(2002–2009)and after(2010–2019)changes in AP guideline.Results:332 patients(68.1%female),median(interquartile range)age 3.0 years(1.5–5.7)and body weight 14.0 kg(10.0–19.3),were enrolled.PDA morphology was conical type A(50.3%),window type B(1.2%),tubular type C(40.1%),complex type D(2.1%),elongated type E(0.9%)and other(5.4%).Minimal PDA diameter and length were 1.9 mm(1.3–2.5)and 8.0 mm(6.2–10.2).PDA was closed using coils(56.3%),Amplatzer Duct Occluders(41.9%)and others(1.8%).Complete closure rate was 61.1%at catheter intervention,72.3%on day 1,87.7%after 6 months and 98.4%at last follow-up on echocardiography.Moderate complication rate(severity level 3)was 4.2%and major complication rate(severity level 4)0.3%,with no catastrophic complications(severity level 5).Annual PDA closure rate declined in the second time period(22.6/year vs.15.5/year,p=0.018),PDA size increased(1.6 mm vs.2.0 mm,p=0.002)and proportion of coils decreased(72.4%vs.37.1%,p98%)and only a small number of complications leading to reintervention or surgery.Change in AP guidelines changed indication for and practice of PDA closure.

关键词： Patent arterial duct device closure congenital heart disease infective endocarditis

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Medium-Term Results of Balloon Valvuloplasty of Native Pulmonary Valve Stenosis with and without Supravalvular Obstruction in Childhood

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Congenital Heart Disease 2022年第2期17卷 161-172页

作者： Olivia Lenoir Daniel Quandt oliver kretschmar Walter Knirsch Pediatric Cardiology Pediatric Heart CenterChildren’s Research CenterUniversity Children’s Hospital ZurichZurichSwitzerland University of Zurich ZurichSwitzerland

Objectives:Factors influencing results of balloon valvuloplasty(BVP)of pulmonary valve stenosis(PS)in children are investigated.Background:BVP has become the standard of care for PS,medium-term results are not uniform and depend on various preconditions.Methods:We analysed the medium-term results of BVP of PS in children in an observational,single centre study.Need for additional procedure was defined as outcome after initial BVP.Results:We included 143 children(83 female)at a median(IQR)age of 2.6(0.26–9.24)months and body weight of 5(3.4–8)kg at BVP with a follow–up of 5.04(1.6–10.2)years.We used balloon size of 10(9–14)mm and maximal balloon pressure of 4(3.5–10)atm,resulting in balloon–to–pulmonary annulus ratio of 1.28(1.2–1.4).Systolic pressure gradient of PS was reduced with BVP(43.5 mmHg vs.14.0 mmHg,p<0.001)and confirmed by echocardiography(68.0 mmHg vs.25.0 mmHg,p<0.001)day 1 post procedure.Pulmonary BVP with associated supravalvular PS resulted in a relevant reduction of systolic pressure gradient in 23 of 31 patients(74.2%).Early additional procedure was necessary in 14 patients(9.8%)after 0.2(0.1–0.7)years due to residual PS(n=13)and infective endocarditis(n=1).Factors for additional procedures were associated supravalvular PS with a higher residual pressure gradient,but not genetic syndrome.During further follow–up of 5.04(1.6–10.2)years no further additional procedures were needed.Conclusions:Pulmonary BVP of native pulmonary valve stenosis leads to excellent medium-term results,even in 3 of 4 infants with associated supravalvular obstruction sufficient pressure relief can be obtained.

关键词： Pediatric catheter congenital pulmonary balloon valvuloplasty

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Early Cardiac Catheterizations within 30 Days Post Congenital Heart Surgery in Children

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Congenital Heart Disease 2023年第1期18卷 79-95页

作者： Daniel Quandt Alessia Callegari oliver Niesse Martin Christmann Anke Meinhold Hitendu Dave Walter Knirsch oliver kretschmar Pediatric Heart Centre-Division of Pediatric Cardiology University Children’s Hospital ZurichZurichSwitzerland Department Neonatology and Pediatric Intensive Care University Children’s Hospital ZurichZurichSwitzerland Department of Congenital Cardiothoracic Surgery University Children’s Hospital ZurichZurichSwitzerland Children’s Research Centre ZurichSwitzerlandUniversity Children’s Hospital ZurichZurichSwitzerland University of Zurich ZurichSwitzerland

Background:This study set out to assess the indications,feasibility,safety,and outcome of early cardiac catheterizations(CC)within 30 days after congenital heart surgery(CHS)in children.Methods and Results:This is a retrospective,single-center case review study of all CC within 30 days after CHS between 1/2010-12/2020.A total of 317(138 diagnostic,179 interventional)CC were performed in 245 patients at a median of 4 days(IQR 13)after CHS.The median age was 3 months(IQR 6),and body weight was 5 kg(IQR 4).A total of 194(61.2%)CC were performed in patients with univentricular hearts.CC revealed significant pathologies leading to early redo-surgery in 37 patients(12%).The transcatheter interventions primarily were needed in patients after cavo-pulmonary connection(n=69%,21.8%),right ventricle to pulmonary artery conduit(n=39%,12.3%),and Norwood-I surgery(n=34%,10.7%)presenting with hypoxemia,prolonged postoperative course,and suspected arterial stenosis on echocardiography.The clinical impact of an early postoperative transcatheter intervention for the following clinical course was high in most cases.There were nine(2.8%)major and 20(6.3%)minor intra-procedural complications.Risk factor analysis revealed no difference for the occurrence of complications for patients’age,weight,and time from initial CHS,underlying uni-vs.biventricular heart disease,or ECMO.Conclusion:Early CC within 30 days after CHS in children can be performed safely with a high diagnostic and therapeutic value.The rate of complications is low,while the therapeutic consequence is relevant.

关键词： Early postoperative cardiac catheterization congenital heart surgery children

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