Surgical Repair of Ventricular Septal Defect in Neonates: Indications and Outcomes

Background:The optimal surgical timing and clinical outcomes of ventricular septal defect(VSD)closure in neo-nates remain unclear.We aimed to evaluate the clinical outcomes of VSD closure in neonates(age≤30 days).Methods:We retrospectively reviewed 50 consecutive neonates who underwent VSD closure for isolated VSDs between August 2003 and June 2021.Indications for the procedure included congestive heart failure/failure to thrive and pulmonary hypertension.Major adverse events(MAEs)were defined as the composite of all-cause mortality,reoperation,persistent atrioventricular block,and significant(≥grade 2)valvular dysfunction.Results:The median age and body weight at operation were 26.0 days(interquartile range[IQR],18.8–28.3)and 3.7 kg(IQR,3.3–4.2),respectively.The median follow-up duration was 110.4 months(IQR,56.8–165.0).Seven patients required preoperative respiratory support,andfive had significant(≥grade 2)preoperative valvular dysfunction.One early mortality occurred due to irreversible cardiogenic shock;no late mortality was observed.One reopera-tion was due to hemodynamically significant residual VSD at 103.8 months postoperatively.The overall survival,freedom from reoperation,and freedom from MAE at 15-years were 98.0%,96.3%,and 94.4%,respectively.Pre-operative mechanical ventilation was associated with a longer duration of postoperative mechanical ventilation(p<0.001)and a longer length of intensive care unit stay(p<0.001).Conclusions:VSD closure with favorable outcomes without morbidities is feasible even in neonates.However,neonates requiring preoperative respiratory support may require careful postoperative management considering the long-term postoperative risks.Overall,surgical VSD closure might be indicated earlier in neonates with respiratory compromise.

Isolated Ventricular Septal Defect: Ultrasound, Therapeutic and Evolutionary Aspects of 85 Cases in the Cardiology Department of the Ignace Deen National Hospital in Conakry

Introduction: Ventricular septal defect (VSD) is the most common congenital heart disease of all congenital heart defects. The aim of this study was to investigate the echographic, therapeutic and evolutionary aspects of ventricular septal defects (VSD) in the general cardiology department of the Hôpital National Ignace Deen. Methods: A retrospective data collection was carried out from January 2018 to December 2023 including 85 cases of isolated IVC was performed. The variables studied were epidemiological, clinical, paraclinical, therapeutic and evolutionary. Results: Of the 320 patients seen during the study period for congenital heart disease, 85 (26.556%) were isolated IVCs. Age at diagnosis ranged from 3 months to 16 years, with an average age of 3.59 years. The most represented ethnic group was the Fulani (50.58%). The 8.24% came from consanguineous marriage versus 22.35%. 91.76% of children had a history of bronchitis. The most common clinical signs found were systolic murmur (90.58%), growth retardation (51.76%). Only 4 cases (4.70%) had a malformation associated with IVC represented by DiGeorges disease (2.35%) and trisomy 21 (2.35%). Nearly half the patients had type IIb VIC (44.71%). The other half were represented by type 1 (18.82%), type IIa (20%), type III (10.59%) and type IV (5.88%). According to site more than two-thirds of VICs (71.64%) were perimembranous in location, followed by infundibular (16.47%) and muscular (11.76%) VICs. In our study 55.29% presented an indication for both surgical intervention and medical treatment, while 16.47% required only medical treatment. In contrast, 28.23% were placed under exclusive surveillance. Of the 47 patients for whom surgery was indicated, 29 (61.17%) underwent surgical repair, while 18 (38.83%) were awaiting confirmation for surgery. Conclusion: VIC is the most common congenital heart disease. An early detection strategy and the establishment of specialized centers could improve the outcome of these children.

Transcatheter Ventricular Septal Defect Closure with Nit-Occlud LêVSD Device—Five Years’Experience and Literature Review

Introduction:Transcatheter closure is an alternative to ventricular septal defect(VSD)occlusion surgery.Nit-Occlud LêVSD coil is a new device yet to be evaluated.The study aimed to evaluate immediate and midterm results after transcatheter closure with the Nit-Occlud LêVSD device.Methods:The retrospective analysis included 30 patients with VSD referred for closure during the period from October 2015 to December 2020.Results:At the time of intervention,the patients’mean age and body weights were 7.5±5.6 years and 29.3±19.1 kg.The majority of the defects had perimembranous location(24/30),four defects had muscular and two outlet subaortic position.The mean effective right-side diameter of the VSDs was 3.6±1.3 mm.Single ventricular fibrillation,device embolization,and hemolysis developed in different patients and were successfully treated.None of the patients had a complete atrioventricular block.The coil was successfully placed in 25/30(83.3%)patients.The majority of the devices were 10 mm×6 mm(11/25)and 12 mm×8 mm(8/25)in size.Two patients required the implantation of a second device.The follow-up period was 2.1±1.4 years.Complete VSD closure was achieved in 48%of cases immediately after the intervention,74%during 2.1±1.6 months after the procedure,and 81%over follow-up.The remaining patients had a trivial residual defect.During the follow-up,approximately one-third of patients developed trivial aortic and mitral valve regurgitation,and half of the patients acquired trace/mild tricuspid regurgitation.Standardized(z-score)left ventricular end-diastolic diameter(0.15±0.37 vs.0.92±0.82,p=0.005)and left atrium dimension(0.47±0.58 vs.1.89±1.11,p=0.005),as well as the left atrium to aortic root ratio(1.2±0.1 vs.1.4±0.2,p=0.005)showed a significant decrease over follow-up related to the period before intervention.Conclusion:Intervention with Nit-Occlud
LêVSD coil showed appropriate results regarding VSD closure rate,complications,and chamber remodeling.The introduction of this device into clinical practice is a significant step forward in transcatheter perimembranous VSD occlusion.

Mortality Rates of Ventricular Septal Defect for Children in Kazakhstan: Spatio-Temporal Epidemiological Appraisal

Objective: The aim is to study the trends in ventricular septal defect (VSD) mortality in children in Kazakhstan.Methods: The retrospective study was done for the period 2011–2020. Descriptive and analytical methods of epidemiologywere applied. The universally acknowledged methodology used in sanitary statistics is used to calculatethe extensive, crude, and age-specific mortality rates. Results: Kazakhstan is thought to be seeing an increase inmortality from VSDs in children. As a result, this study for the years 2011 to 2020 was conducted to retrospectivelyassess data from the central registration of the Bureau of National Statistics that was available throughoutthe nation. Age-standardized mortality data were obtained and compared between age categories. It was shownthat 507 children died from this condition throughout the time period under study. The average annual standardizedmortality rate was 1.88 per 100,000 population and tended to decrease over time. The peak of mortality wasnoted at the age of up to 1 year, namely the neonatal period. Cartogram mortality rates were calculated usingstandardized indicators. Additionally, age-sex variations were taken into account when performing all calculations.Conclusion: In recent years, the death rate from VSD has declined from 1.5 to 0.6 per 100,000 people, withthe trend remaining constant (T = 1.4%, R^(2) = 0.5825). The analysis of mortality trends related to VSD is crucial inboth theoretical and practical aspects, as it enables early detection and treatment of VSDs. The findings of thisstudy will be valuable to public health authorities in developing a strategy to treat VSDs effectively.

Outcomes of Transcatheter Closure in Outlet-Type Ventricular Septal Defect after 1 Year

Background:Ventricular septal defect(VSD)is the most common congenital heart disease.Transcatheter VSD closure is an effective treatment for patients with muscular and perimembranous VSD.However,there is a limit data for outlet VSD,especially impact to the aortic valve leaflet after transcatheter closure.This study aims to assess the outcomes of transcatheter closure of the outlet-type ventricular septal defect(OVSD)after 1 postoperative year.Methods:A retrospective study was performed including 50 patients who underwent transcatheter(n=25)and surgical(n=25)OVSD closure during the exact time frame at two medical centres.Results:The median age and body weight of patients in the transcatheter group were significantly higher than those of patients in the surgical group(7.0 vs.2.8 years;27.0 vs.11.4 kg;p<0.01).The defect size in the surgical group was significantly larger than that in the transcatheter group(5.0 vs.3.0 mm;p<0.01).All OVSD patients have successful transcatheter closure(100%)as effective as surgical closure.Less than small residual shunt was present 20%and 8%immediately after the procedure in the transcatheter and surgical groups(p=0.50),which decreased to 12%and 4%at the 1-year follow-up(p=0.61),respectively.No incidence of complete atrioventricular block and other complications was observed in both groups,and no significant differences were noted in the new onset or worsening of the aortic regurgitation in both groups(p=1.0).Conclusions:Transcatheter treatment could be effectively and safely achieved for OVSD closure at 1-year follow-up.

Effects of General Anesthesia on the Results of Cardiac Catheterization in Pediatric Patients with Ventricular Septal Defect

Background:There is no gold standard sedation method for pediatric cardiac catheterization.In congenital heart diseases with intracardiac shunts,hemodynamic parameters are prone to change depending on the ventilation conditions and anesthetics,although few studies have examined these effects.The purpose of this study was to investigate the effects of two different sedation methods on the hemodynamic parameters.Methods:This study retrospectively evaluated consecutive patients with ventricular septal defect(VSD)below 1 year of age who underwent cardiac catheterization at Aichi Children’s Health and Medical Center,who were divided into age-and VSD diameter-matched general anesthesia(GA)and monitored anesthesia care(MAC)under the natural airway groups(n=40 each),for comparison of hemodynamic parameters.Results:In the GA group,arterial blood pH and arterial partial pressure of oxygen were significantly higher(p<0.01),whereas arterial partial pressure of carbon dioxide was significantly lower than in the MAC group(p<0.01).Mean pulmonary artery pressure(p<0.05)and systemic blood pressure(p<0.01)were lower in the GA group.Pulmonary vascular resistance index(p<0.01)and systemic vascular resistance index(p<0.01)were also significantly lower in the GA group than the MAC group.There were no significant differences in pulmonary blood flow index,systemic blood flow index,and pulmonary/systemic blood flow ratio between the two groups.Conclusions:Cardiac catheterization under GA in VSD patients results in different hemodynamic parameters compared to that under MAC.In particular,when using pulmonary artery pressure and pulmonary vascular resistance measured under GA for judgment regarding the surgical indications or perioperative management,consideration should be given to the fact that these parameters might be lower compared to those measured under MAC.

Effectiveness and Safety of Transcatheter Closure of Various Ventricular Septal Defects Using Second-Generation Amplatzer Duct Occluders

Objective:This study was designed to determine the long-term safety and efficacy of using the Amplatzer Duct Occluder II(ADO II)for the closure of various ventricular septal defects(VSDs).Methods:From January 2011 to December 2019,selected VSD patients were treated through transcatheter intervention using ADO II occluders.The closure results and complications from 188 patients,involving 167 perimembranous ventricular septal defects(pmVSDs),9 intracristal VSDs,11 post surgery residual shunts and 1 post closure residual shunt with the mean outlet diameter3.1±0.8 mm under angiography,were enrolled in this study.Results:The success rate was 98.9%for all procedures.During the median 77-month follow-up period,no cases of complete atrioventricular block(cAVB),infective endocarditis or death occurred.One major adverse event(0.5%)was recorded:cerebrovascular accident occurred 1 day after the procedure in one patient who was transferred to the neurology department.The residual shunt rate was 44.6%,which was the most common minor adverse event.The cardiac conduction block rate was 4.3%.Specifically,one pmVSD patient developed intermittent LBBB during the 28-month follow-up.There were 3 patients(1.6%)with new-onset mild tricuspid insufficiency,and the insufficiency degree was stable during follow-up.There was no new-onset aortic insufficiency that occurred.Conclusions:Transcatheter closure of pmVSDs,some intracristal VSDs,some postsurgery or postclosure residual shunts using ADO II occluders were both safe and effective and yielded excellent long-term results in selected patients.

Minimally Invasive Perventricular Device Closure of Ventricular Septal Defect: a Comparative Study in 80 Patients

Objective To evaluate the efficacy of minimally invasive perventricular device closure of ventricular septal defect(VSD). Methods Between September 2011 and February 2013, we collected 40 patients who underwent perventricular closure via a small lower sternal incision(minimally invasive group), aged 15.5±3.5 years(12 months to 32 years) with a body weight of 24.2±7.5 kg(10.8-58.0 kg). The mean size of VSD was 5.6±0.5 mm(2-14 mm). Another 40 patients were included as the surgical group, receiving the conventional surgical repair of VSD. The device of the minimally invasive group was released under the guidance of transesophageal echocardiography. Success rate, cardiac indicators, and clinical outcomes of the 2 groups were compared. Results The patients in the surgical group and those in the minimally invasive group showed similar results in success rate(both 97.5%). The procedure time, intensive care unit stay, hospital stay, and postoperative recovery time in the minimally invasive group were significantly shorter than those in the surgical group(58±21 minutes versus 145±26 minutes, 2±1 days versus 8±3 days, 5±1 days versus 16±6 days, 3±1 days versus 90±20 days, all P<0.05). The minimally invasive group had a higher incidence of conduction anomalies(17.5% versus 2.5%, P<0.05). In the follow-up period of 3-12 months, there was no new residual shunt, noticeable aortic regurgitation, significant arrhythmias, or device failure except for new complications in the surgical group. Conclusions The success rate of minimally invasive perventricular device closure of VSD under transesophageal echocardiography guidance is similar to that of conventional surgical repair, but the short-term outcomes of the minimally invasive approach is much better. Long-term follow-up is necessary to confirm the effectiveness of this technique.

Cardiac resynchronization therapy for heart failure induced by left bundle branch block after transcatheter closure of ventricular septal defect

A 54-year-old female patient with congenital heart disease had a persistent complete left bundle branch block three months after closure by an Amplatzer ventricular septal defect occluder. Nine months later, the patient suffered from chest distress, palpitation, and sweating at daily activities, and her 6-min walk distance decreased significantly （155 m）. Her echocardiography showed increased left ventricular end-diastolic diameter with left ventricular ejection fraction of 37%. Her symptoms reduced significantly one week after received cardiac resynchronization therapy. She had no symptoms at daily activities, and her echo showed left ventricular ejection fraction of 46%and 53%. Moreover, left ventricular end-diastolic diameter decreased 6 and 10 months after cardiac resynchronization therapy, and 6-min walk dis-tance remarkably increased. This case demonstrated that persistent complete left bundle branch block for nine months after transcatheter closure with ventricular septal defect Amplatzer occluder could lead to left ventricular enlargement and a significant decrease in left ventricular systolic function. Cardiac resynchronization therapy decreased left ventricular end-diastolic diameter and increased left ventricular ejection fraction, thereby improving the patient’s heart functions.

Mutational screening of affected cardiac tissues and peripheral blood cells identified novel somatic mutations in GATA4 in patients with ventricular septal defect

The aim of this study was to examine how somatic mutations of the GATA4 gene contributed to the genesis of ventricular septal defect （VSD）. The coding and intron-exon boundary regions of GATA4 were sequenced of DNA samples from peripheral blood cells and cardiac tissues of twenty surgically treated probands with VSD. Seven novel heterozygous variants were detected in cardiac tissues from VSD patients, but they were not detected in the peripheral blood cells of VSD patients or in 500 healthy control samples. We replicated 14 single nucleotide polymorphisms （SNPs） reported in NCBI. Bioinformatics analysis was performed to analyze the possible mechanism by which mutations were linked to VSD. Among those variants, c. 1004C〉A （p.S335X） occurred in the highly conserved domain of GATA4 and generated a termination codon, which led to the production of truncated GATA4. The seven novel heterozygous GATA4 mutations were only identified in cardiac tissues with VSD, suggesting that they are of somatic origin. A higher mutation rate in cardiac tissues than in peripheral blood cells implies that the genetic contribution to VSD may have been underestimated.

Restrictive perimembranous ventricular septal defect with left to right Shunt post urgent aortic balloon valvuloplasty and transcatheter aortic valve replacement

An 86-year-old male patient was admitted in our cardiology ward with signs of congestive biventricular heart failure. The patient presented with deteriorating dyspnea on mild exertion and at rest the last days, compatible with class NYHA Ⅲ-Ⅳ heart failure, bilateral peripheral oedema, increased NT-proBNP （9198 pg/mL）, mildly elevated Troponin （TnT 64 pg/mL）, interstitial pulmonary oedema and bilateral pleural effusions in chest X ray.

Transcatheter Closure of a Right Pulmonary Artery to Left Atrium Fistula Using a Ventricular Septal Defect Occluder

Background:Communication between the right pulmonary artery(RPA)and left atrium(LA)is a rare cause of central cyanosis in pediatric patients.Case presentation:We describe a 3-year-old female patient with an oxygen saturation of 70%at admission.The echocardiogram indicated an abnormal color flow Doppler in the LA and she underwent standard cardiac catheterization.The angiography of pulmonary artery revealed a 7.4 mm×7.6 mm fistula between the RPA and LA and achieved successful closure using ventricular septal defect occlusion.Conclusion:The fistula between pulmonary artery and left atrium is an extremely rare but treatable congenital defect.It should be considered in differential diagnosis of cyanosis in children.

Transcatheter Closure of Perimembranous Ventricular Septal Defect Using the Amplatzer Duct Occluder II

Objective:To evaluate the efficacy of Amplatzer duct occluder II(ADO II)in the treatment of perimembranous ventricular septal defect(pmVSD)in children.Methods:Between June 2017 and June 2020,13 patients with pmVSD had attempted transcatheter closure using ADO II,seven of patients were used antegrade approach and six of them were used retrograde approach.Results:There were 8 males and 5 females,age from 1 to 7 years,weight from 10.5 to 31.0 kg,and VSD size from 2.0 to 4.0 mm.Procedure was successful in all cases with the outer diameter of the occluders ranging from 4 to 6 mm.No aortic,tricuspid regurgitation or residual shunt was found in the immediate ultrasound assessment.No arrhythmia was observed in the Holter monitoring 3 days after the intervention.Discharge echocardiography indicated complete shunt closure.No evidence of occluder prolapse,malignant arrhythmia,or intensed valve regurgitation was seen on a median follow-up of 18 months(range,6 to 36 months).Conclusions:Based on our experience,ADO II showed good efficacy in the early and middle stages of pediatric pmVSD closures.

Evaluation of Biventricular Volume and Systolic Function in Children with Ventricular Septal Defect and Moderate to Severe Pulmonary Hypertension Using Real-Time Three-Dimensional Echocardiography

Background: Real-time three-dimensional echocardiography (RT-3DE) could obtain ventricular volume andejection fraction rapidly and non-invasively without relying on ventricular morphology. This study aims to useRT-3DE to evaluate the changes in biventricular volume and systolic function in children with ventricular septaldefect (VSD) and moderate to severe pulmonary hypertension (PH) before surgery. Methods: In this study18 children with VSD and moderate to severe PH (VSD + PH Group) and 18 healthy children of the sameage (Control Group) were recruited. Biventricular volume and systolic function were evaluated by RT-3DE.The measurements included: left and right ventricular volume indexed to body surface area (BSA), stroke volume(SV) indexed to BSA, and ejection fraction (EF). Results: The results showed left and right ventricular volumeindexed to BSA and SV indexed to BSA were significantly increased in VSD + PH Group (VSD + PH Groupvs. Control Group), LVEDV/BSA (ml/m2): 48.67 ± 21.46 vs. 25.59 ± 6.96, RVEDV/BSA (ml/m2): 55.98 ±15.35 vs. 27.69 ± 4.37, LVSV/BSA (ml/m2): 24.08 ± 9.30 vs. 15.14 ± 4.29, RVSV/BSA (ml/m2): 26.02 ± 8.87 vs.14.11 ± 2.89, (P < 0.05). While for EF in VSD + PH Group decreased (VSD + PH Group vs. Control Group),LVEF: 50.93 ± 7.50% vs. 59.38 ± 7.24%, RVEF: 45.84 ± 7.71% vs. 51.05 ± 6.90% (P < 0.05). Conclusion: Inchildren with VSD and moderate to severe PH, increased biventricular volume and decreased systolic functionwere observed with RT-3DE, but biventricular systolic function remained within acceptable limits. The childrenin this study recovered well after surgery without serious perioperative complications, suggesting that biventricularsystolic function may help facilitate the surgical decision-making process in children with VSD and moderate-toseverePH.

Discharge planning for children with ventricular septal defect and pulmonary arterial hypertension in China

Objective:To evaluate the effectiveness of discharge planning on maternal caring knowledge,maternal caring behavior,maternal discharge readiness and the rehospitalization of children with ventricular septal defect and pulmonary arterial hypertension(VSD-PAH).Background:Children with congenital heart disease(CHD)with pulmonary arterial hypertension(PAH)have more complications after surgery than those without PAH.Discharge planning is an effective strategy to help children leave the hospital safely,and receive appropriate care after discharge.Methods:A quasi-experimental design was used.Sixty children and their mothers were recruited and divided into two groups:the control group received conventional care,the intervention group received both conventional care and additional discharge planning care.Results:(1)After admission,maternal caring knowledge between the two groups was similar.(2)At discharge,maternal discharge readiness,maternal caring knowledge and maternal caring behavior in the intervention group was significantly higher compared to the control group(t=3.35,p=0.001;F=84.74,p<0.001;F=23.82,p<0.001).This difference persisted after discharge,and was evident at one month and three months after discharge.(3)However,no significant difference in the readmission rate of children after discharge was evident between the two groups.Conclusions:Discharge planning improves the maternal discharge readiness,maternal caring knowledge and maternal caring behaviors.However,this planning did not reduce the readmission rate of children with CHD-PAH.

Morphology and Function of the Aortic Valve after Transcatheter Closure of Ventricular Septal Defect with Aortic Valve Prolapse

Objective:This study aims to evaluate the morphology and function of the aortic valve after transcatheter closure of ventricular septal defect(VSD)with aortic valve prolapse(AVP)abased on clinical and radiological outcomes.Methods:From January 2013 to November 2014,164 consecutive patients(97 males,59.1%)with VSD and AVP were treated by transcatheter closure.The patients were divided into the mild AVP group(n=63),moderate AVP group(n=89)and severe AVP group(n=12).The clinical and radiological outcomes of these patients were analyzed retrospectively.Results:In total,146(89.0%)patients were successfully treated with VSD occluders,including 59/63(93.7%)with mild AVP,80/89(89.9%)with moderate AVP and 7/12(58.3%)with severe AVP.The degree of AVP was ameliorated or disappeared in 39(26.7%)patients,and remained unchanged in 103(70.5%)patients after the intervention.In the 35 patients who initially had trivial-to-moderate aortic regurgitation(AR),the degree of AR was ameliorated or disappeared in 25(71.4%)patients,aggravated from trivial to mild AR in 1(2.9%)patient,and remained unchanged in 9(25.7%)patients.In 111 patients without AR,1(0.9%)patient had mild AR and 24(21.6%)patients had trivial AR after intervention.The depth and width of the prolapsed aortic valve decreased after transcatheter closure of VSD in all three groups.During the 70-month(range,54–77)follow-up period,no patients with AVP and AR needed an aortic valve intervention.Conclusions:Transcatheter closure of VSD with AVP is feasible.The morphology and function of the prolapsed aortic valve improved and remained stable for a long period after intervention.

MORPHOMETRIC ANALYSIS OF LUNG BIOPSY TISSUE IN PATIENTS WITH TETRALOGY OF FALLOT AND VENTRICULAR SEPTAL DEFECT WITH PULMONARY HYPERTENSION

The pulmonary vasculature from 24 children with Tetralapy of Fallot (TOF)and ventricular septal defect with pulmonary hypertension (VSD/PH) war studied morphometrically. The study showed hypoplasis of small arteries in TOF There was a decrease in pulmonary artery size, but in the intra-acinar region small arteries were increased in number with mild intimal change. The pulmonary vascular resistance was normal postoperatively. The pulmonary vasculature in VSD/PH displayed a variable degree of obstructive lesions. The pulmonary arterial pressure remained elevated postoperatively in patients with severe pulmonary obstructive diseases.

Clinical Study of 147 Cases with Ventricular Septal Defect and Aortic Valve Insufficiency in Children

Objectives To introduce ourexperience in treatment of ventricular septal defectswith aortic valve insufficiency. Methods A total of147 cases was involved in a nine-year retrospectivestudy. Age ranged from 5 months to 15 years (mean,7.60± 4.12 years). All had been diagnosed by thor-ough history, physical examinations, chestroentgenogram, two -dimensional echocardiogram.Some 103 patients had taken catheterization and an-giocardiography. 91 (61.9%) cases underwent theprocedure of VSD closure, 31 (21.08%) had aorticvalvuloplasty simultaneously, and 25 (17.02%) wereperformed VSD closure plus aortic valve replacement.Results Among the 147 patients, 137 (93.19%) havefully recovered, 6 (4.08%) improved, and 4 patientsdied (2.73%). Conclusions As soon as being diag-nosed as subarterial VSD, surgical interventionshould be recommended at an early date. The cases ofperimembranous VSD also need close follow-up. OnceAI occurs, operations should be taken in time. Thecases without AI ought to accept treatment duringschool age.

Ventricular Septal Defect Spontaneous Close Induced by Transcatheter: A Case Report

Congenital ventricular septal defect （VSD） spontaneous close induced by transcatheter treatment is rare and has not yet been reported. We report on one case of VSD spontaneous close induced by transcatheter treatment in a 10 years old girl.

Clinical Study on Amplatzer Occluder Device to CloseVentricular Septal Defect

Objectives To evaluate the therapeutic effect of transcatheter Amplatzer device on the closure of ventricular septal defect （VSD）. Methods Among 143 patients with VSD, 135 patients with perimembrane VSD and 2 with muscular VSD aged 2.5 -28 years old, were successfully closed with Amplatzer oeeluder device by the pereutaneous guidwire through femoral artery-VSD-femoral vein route under the guidance of fluoroscopy, ventrieulography and transthoracic echocardiography （TIE）. The diameters of the VSDs were 2.3-15.7 （6.90±2.76）mm by left ventriculography. Results The success rate of transcatheter closure of VSD with Amplatzer devices was 96%（137/143）. Minimal residual amount of shunts were found in one patient, although the shunts was decreased one month after the procedure. There were one patient who had respiratory arrest during the procedure, 7 patients（5%）had conduction disturbance, 3 patients had complete left bundle branch block, 2 patients had complete right bundle branch block, 1 patient had Ⅰ degree atrial-ventricular block and 1 patient had Ⅲ degree atr/al-ventricular block during hospitalization. The diameters of the occluder ranged from 4 to 23 （9.13±3.31）mm and were symmetrical in 122 patients and asymmetrical in 15 patients. Conclusions Transcatheter closure of the perimembranous ventrieular septal defect using Amplatzer VSD occluder device is an efficient method for patients with the perimembranous VSD. The operation is simple with a high success rate and a good effect.