老年房间隔缺损患者经导管封堵治疗的可行性及疗效

目的　探讨经导管封堵治疗老年房间隔缺损患者的可行性及疗效。方法　 19例年龄≥ 6 0岁的老年房间隔缺损患者 ,术前经胸超声测量房间隔缺损直径为 10～ 34(2 4 .4± 8.2 )mm ,其中 3例患者为双孔型房间隔缺损。 11例患者合并心房颤动或阵发性心房颤动。X线胸片示心胸比例均 >0 .5 (0 .5 2～ 0 .70 )。术前心功能 (NYHA分级 )Ⅱ级8例 ,Ⅲ级 9例 ,Ⅳ级 2例。所有患者均在局麻下 ,应用X线透视和经胸心脏超声引导行房间隔缺损封堵术。结果术中测肺动脉平均压力 2 1～ 4 7mmHg(1mmHg=0 .133kPa) ,其中肺动脉平均压力 >2 5mmHg者 16例。所有患者均用Amplatzer房间隔缺损封堵器或国产双盘状封堵器一次封堵治疗成功。所用封堵器直径为 14～ 38mm。 3例双孔型缺损 ,2例用 2 8mm和 32mm封堵器一并封堵 ,另 1例用直径 14mm和直径 2 6mm的封堵器封堵成功。所有患者于术后 5～ 7d行经胸心脏超声检查 ,无残余分流。术后患者心功能明显改善 ,随访 1～ 30个月 ,无封堵器相关的并发症。结论　经导管封堵治疗老年房间隔缺损患者是一种安全有效的方法。     

Spontaneous embolization of an atrial septal defect occluder device into the left ventricular outflow tract in a patient with pulmonary stenosis

A 24‐year‐old man was admitted to our outpatient clinic for his routine checkup of consecutively percutaneously treated atrial septal defect (ASD) and pulmonary valvular stenosis 45 days ago. A 24 mm ASD occluder device was implanted under transthoracic echocardiographic guidance and 80 mm Hg peak‐to‐peak pulmonary valvular gradient decreased to 20 mm Hg gradient after pulmonary valve dilatation with 23 mm NUMED II transluminal valvuloplasty catheter balloon. Atrial septal defect (ASD) closure is now routinely performed using a percutaneous approach under echocardiographic guidance especially transthoracic echocardiography (TEE). Centrally located, ostium secundum type and less than 3.5 cm in size are considered ideal for device closure. Although there is considerable variation in size and location of the defects, TEE guidance is quite important for this proportion of ASDs. The selection of patients for percutaneous transcatheter closure of a secundum ASD requires accurate information regarding the anatomy of the defect such as its maximal diameter and the amount of circumferential tissue rims.     

经胸超声心动图监测下用Amplatzer封堵器治疗房间隔缺损

目的：评价在经胸超声心动图(TTE)监测下用Amplatzer封堵器介入治疗房间隔缺损(ASD)的可行性及实用价值。方法：全组共18例继发孔型ASD患者，均在常规C型臂X线机透视和TTE指导下经导管置入Amplatzer封堵器。结果：18例患者中有2例未放置成功而改为开胸手术；16例均成功置入Amplatzer封堵器，即刻完全堵闭，术后随访3个月至2年，TTE示ASD仍被完全封闭，未见残余分流。随访期间无任何并发症。结论：在TTE和X线透视指导下用Amplatzer封堵器治疗继发孔型ASD安全可行，具有一定实用价值。     

Clinical results of percutaneous closure of large secundum atrial septal defects in children using the Amplatzer septal occluder

We reviewed our experience using the Amplatzer septal occluder (AGA Medical, Golden Valley, MN, USA) to close large, secundum-type atrial septal defects (ASDs) in children. Between June 2002 and December 2005, 52 patients (mean age 13.5 +/- 8.7 years) underwent transcatheter closure of large (>/=25 mm), secundum ASDs with the use of the Amplatzer septal occluder (ASO). Groups 1 and 2 included patients with a retroaortic rim of <5 mm (n = 39) or >/=5 mm (n = 13), respectively. All procedures were performed with general anesthesia and transesophageal echocardiographic guidance except for 10 patients, which involved local anesthesia and three-dimensional transthoracic echocardiography. Successful device implantations, device sizes, approaches, complications, and closure rates were assessed. Device implantation was successful in 50 patients (96.1%), with no difference between groups (95% vs 100%, P>0.05). In 2 patients, implantation failed because of embolism or deployment failure. Device were larger in group 1 than in group 2 (29.7 +/- 4.2 vs 26.7 +/- 3.8 mm, P = 0.04). The right upper pulmonary-vein approach was more common in group 1 than in group 2 (P = 0.0001). Complications and closure rates did not differ between the groups (P > 0.05). Transcatheter closure of large, secundum ASD by using the ASO device was feasible, and complication rates were low. A deficient retroaortic rim did not preclude successful device implantation; however, a large device may be needed to close large ASD. Close long-term follow-up is necessary to determine the safety of transcatheter closure of large ASDs in children.     

Simultaneous Transcatheter Closure of Two Secundum Atrial Septal Defects Using the Amplatzer™ Septal Occluder

Transcatheter closure of a single secundum atrial septal defect (ASD) is performed routinely using various investigational devices. A 37-year-old patient with two large secundum ASDs underwent successful simultaneous transcatheter closure using an 18-mm and 20-mm Amplatzer™ septal occluder device. At 3-month follow-up, transesophageal color Doppler echocardiography revealed one defect to be completely closed, and the other had trivial residual shunt with significant improvement in symptoms.     

经胸彩色多普勒超声心动图在房间隔缺损经导管封堵术中的应用价值

目的探讨经胸彩色多普勒超声心动图(TTE)在房间隔缺损(ASD)经心导管封堵治疗中的应用价值。方法应用TTE选择适于行Amplatzer式封堵术的继发孔型ASD患者27例，在TTE监测引导下经右心导管应用房间隔封堵器关闭ASD。结果26例ASD获成功封堵，术后即刻、1天、1个月和3个月TTE检查显示封堵器位置稳定良好，无残余分流。结论在TTE引导下行ASD封堵术是一种简便、可靠和安全的方法。     

The role of transesophageal echocardiography in transcatheter closure of secundum atrial septal defects by the Amplatzer septal occluder

BACKGROUND: Our purpose was to determine the role of transesophageal echocardiography (TEE) in the closure of atrial septal defects by the Amplatzer septal occluder (ASO) (AGA Medical, Golden Valley, Minn). METHODS: A total of 240 patients with atrial septal defect (ASD) secundum were examined by transthoracic 2-dimensional echocardiography (TTE) and TEE to determine the ASD morphologic features, diameter, and rims. During transcatheter closure TEE was used for determination of the ASD diameter and guidance of the ASO implantation. RESULTS: Sixteen (6%) patients were found not suitable for transcatheter closure with TTE, 35 (14%) with TEE, and 2 during catheterization. Twenty-eight patients (18%) had partial or total deficiency of the posterior, inferoanterior, or inferoposterior rim, 54 (27%) had a centrally positioned ASD, 92 (46%) had insufficient superoanterior rim, and 9 had multiple ASDs, whereas 8 had a septal aneurysm associated with a single defect and 4 a multiperforated aneurysm. A total of 170 patients underwent implantation of ASO. The ASO was correctly positioned in 144 at the first attempt. In the remainder TEE revealed unstable position of the left atrial disk (12), opening of both atrial disks in the left atrium (5), deployment of the device through the smaller defect in patients with multiple ASDs (3), and, in 1 patient, the device was too small and had to be replaced by a larger one. CONCLUSIONS: Morphologic variations of the ASD are common. TEE is crucial for the determination of the ASD morphologic features, diameter, and rims, which are crucial for proper patient selection. TEE allows precise guiding and positioning of the ASO, which is essential for safe and effective transcatheter ASD closure.     

Choice of device size and results of transcatheter closure of atrial septal defect using the amplatzer septal occluder

The impact of device size choice on closure results was analyzed in 138 (101 females, 37 males; age 0.5-84.0 years) consecutive patients who underwent transcatheter closure of the secundum atrial septal defect (ASD) using the Amplatzer septal occluder (ASO). The balloon stretched diameter (SD) of ASD was 19.5 +/- 7.2 mm in 123 patients with single defects, and 20.4 +/- 6.6 mm for the largest defects in 15 patients with multiple ASDs. The difference (delta) between ASO size chosen for closure and the stretched diameter of the defect was calculated and divided into groups: A (delta < -2 mm); B (delta -2.0 to -0.1 mm); C (delta = 0); D (delta 0.1-2.0 mm) and E (delta > 2 mm). The results demonstrated that immediate and 24-hour complete closure rates were significantly higher in patients in groups C and D (P < 0.001). However, at 6-month follow-up, the complete closure rates were similar in patients of groups A-D, while patients of group E had a lower closure rate of 75%. The complication rates were similar in all groups. In conclusion, a choice of a device size identical to or within 2 mm larger than the SD of the defect should be used to maximize the closure rates of ASD using the ASO.     

Strategy of treating secundum atrial septal defect not referred to percutaneous closure

Objective: To evaluate safety and effectiveness of intraoperative device closure for secundum atrial septal defect (ASD) not referred to percutaneous closure.
Design and Patients: From April 2010 to December 2018, 231 secundum ASD children (≤14 years) directly recommended to surgical repair were enrolled in this study. These patients were divided into two groups according to the parents’ choice based on surgeons’ recommendation. Follow-up evaluations were adopted at 2 weeks, 3 months, 6 months, and 12 months after the procedure and yearly thereafter. In Group A, 127 patients underwent an initial attempt at device closure. In Group B, 104 patients underwent a repair procedure under cardiopulmonary bypass.
Results: All patients survived. Group A had lower values of operation time, mechanical ventilation time, cardiac intensive care unit duration and amount of blood transfusion. Nevertheless, postoperative hospitalization time between two groups showed no statistical difference. In group A, 109 (85.83%) patients were successfully occluded, whereas 18 (14.17%) patients were converted to open-heart surgery. No severe complications occurred in the follow-up period.
Conclusion: Intraoperative device closure is safe, effective procedure for selected cases with secundum ASDs which were not referred to percutaneous closure because of more suitable occluder selection, no “unbutton effect” and stitching enhancement.     

经胸超声心动图在继发孔房间隔缺损封堵术围手术期中的应用价值

目的评价经胸超声心动图（VrE）在继发孔房间隔缺损（ASD）围手术期中的应用价值。方法术前筛选86例有外科手术适应证的继发孔ASD患者,TTE测量各切面ASD大小及残边情况,指导选择封堵器（ASO）型号,术中监测ASO置放及释放过程,术后随访观察。结果86例患者术前TTE测得ASD最大直径5～34（24．4±5．63）mm,所用ASO直径为8—40（27．5±7．12）mm。TTE成功引导81例ASO置人,总成功率为94．2％,其中双孔ASD2例,均置入单个ASO成功。5例术后即刻有微量或少量残余分流,术后3个月复查TTE分流完全消失。结论经导管ASD封堵术是安全可行的方法,T珏对ASD封堵术前病例选择、残边评估、ASO型号选择、术中监测ASO的置放全过程和术后疗效评价有重要临床价值。     

New technique for device closure of large atrial septal defects.

The objective of this study was to describe a new technique for transcatheter device closure of large atrial septal defects (ASDs) using the Amplatzer septal occluder and our experience with this technique in 14 patients. Transcatheter closure of large (> 25 mm) ASDs is challenging. We have developed a balloon-assisted technique (BAT) to facilitate device closure of large ASDs. The BAT consists of using a balloon catheter to support the left atrial (LA) disk of the Amplatzer septal occluder during device deployment. The balloon support prevents prolapse of the LA disk into the right atrium. Between April 2003 and February 2004, 14 patients with large ASDs (mean age, 25.71 +/- 15.71 years; mean weight, 51.21 +/- 23.78 kg) underwent device closure with the Amplatzer septal occluder using the BAT. The median balloon-stretched diameter of the ASD was 32 (range, 26-40) mm. The median device size used was 33 mm (range, 26-40 mm). All 14 patients had successful deployment of the device using the BAT. The mean follow-up period was 16.5 +/- 11.95 weeks. No major complications were noted during the procedure or on short-term follow-up. The BAT enables predictably successful closure of large ASDs using the Amplatzer septal occluder.     

Percutaneous closure with Amplatzer device is a safe and efficient alternative to surgery in adults with large atrial septal defects

BACKGROUND: In adults with atrial septal defect (ASD) and large right-to-left shunt, closure of the defect is recommended. Percutaneous closure is still rarely used in this population. This study presents the results of transcatheter closure with the Amplatzer occluder in such patients. METHODS AND RESULTS: We studied 44 consecutive adult patients with a secundum ASD and 2 of the 3 following criteria: QP/QS >/=2 by oximetry, echocardiographic right ventricle overload, and ASD size >20 mm. Forty-two patients had a successful implantation. In 1 patient an unstable device was withdrawn; in another one, the device embolized in the pulmonary artery. At 6-month median follow-up, 95% had a complete closure; 2 patients with an additional defect had a small residual shunt. Major complications were the aforementioned embolization and a cerebrovascular accident in a patient with atrial fibrillation treated with aspirin. Others were minor and transitory: premature atrial beats in 3 patients, and paroxysmal atrial fibrillation and pulmonary edema in 1 patient each. CONCLUSIONS: Transcatheter closure of large ASDs with the Amplatzer device is efficient with less morbidity than surgical closure.     

Intracardiac echocardiography to guide closure of atrial septal defects in children less than 15 kilograms.

BACKGROUND: Intracardiac echocardiography (ICE) is increasingly replacing transesophageal echocardiography (TEE) as the primary imaging technique to guide device closure of atrial septal defects (ASD). Owing to the length of the procedure, the use of TEE requires general anesthesia. Investigators have reported the usefulness of ICE in adults and children. However, little is known about the use of ICE in children whose weight is <15 kg. Therefore, this study examines the use of ICE guided secundum ASD closure in children <15 kg. METHODS: Nineteen patients with a median age of 3.1 years (range 1.8-4.8), and median weight of 13.2 kg (range 8.0-14.4) underwent transcatheter occlusion (Amplatzer occluder) of a secundum ASD using ICE guidance. ICE was performed using an Acunav catheter. The ICE catheter (10 F shaft) was introduced into an 11 F sheath in a contralateral femoral vein. Diagnostic as well as periprocedure imaging was obtained. RESULTS: Sixteen patients had single, and three had multiple defects. Median defect size as measured by ICE was 16 mm (range 2.5-25). The median balloon stretched diameter (obtained in eight patients) was 18 mm (range 10-21); the median size of the defect for these eight patients was 15 mm (range of 8-20). Both techniques for measuring the defect correlated well with r = 0.94. The ASD occluder size ranged from 7 to 26 mm with a median of 18 mm. The procedure was successful in 16 patients who had a device implanted and no residual shunt. ASD occlusion was not attempted in two patients due to deficient rims and in one patient, the attempt failed due to left atrial disk prolapse through the ASD. Four patients experienced transient complications during the catheter procedure, including supra ventricular tachycardia, sinus bradycardia, and two with complete heart block (resolving with device removal); all had subsequent successful device placement. No complications were attributed to the use of ICE and specifically, no vascular injury was noted. CONCLUSIONS: Comparable to results with larger patients, ICE provides adequate imaging (preprocedure diagnosis and periprocedure guidance) during device occlusion of secundum ASDs with no significant complications. Thus, ICE can successfully be used in the closure of ASD in smaller patients (<15 kg) and eliminate the need for endotracheal intubation.     

介入治疗房间隔缺损600例临床分析

目的:探讨介入治疗房间隔缺损(ASD)的疗效及并发症。方法:1998年11月至2011年2月应用双盘伞ASD封堵器治疗600例继发孔ASD,其中男性235例,女性365例;年龄1.3~72岁,体质量10~107kg。术前均经体检、心电图、胸X线片及超声心动图确诊,术后行心脏超声及临床检查随访。结果:手术成功率98.8%(593/600),5例因缺损较大或边缘不足试封堵失败,1例术中出现Ⅲ°房室传导阻滞放弃介入治疗,1例释放封堵器后即发现移位,即刻通知外科及时开胸取出封堵器并修补缺损;选择封堵器直径6~40mm,35例多孔ASD,有33例置入1个封堵器,2例应用2个封堵器。手术近期并发症包括:封堵器移位(1例),脑梗死(1例),心律失常(2例),空气栓塞(3例),平均5年随访中没有严重并发症。结论:ASD的介入治疗其技术成功率高,近期和远期疗效均满意,已成为治疗ASD的首选方法。     

Transthoracic echocardiographic guidance of transcatheter atrial septal defect closure

This study examines the safety and efficacy of transthoracic echocardiographic (TTE) guidance of atrial septal defect (ASD) device closure. We evaluated 74 patients for TTE-guided ASD closure. Fifty-six patients had successful device implantation using TTE guidance. Twelve patients were referred for surgical ASD closure on the basis of TTE evaluation. Five patients with multiple ASDs or poor transthoracic acoustic windows had ASD device closure guided by transesophageal echocardiography (TEE).     

Left ventricular conditioning in the elderly patient to prevent congestive heart failure after transcatheter closure of atrial septal defect.

Transcatheter closure of atrial septal defects (ASDs) is a safe and effective treatment. Over the past years, an increasing number of elderly patients (age > 60 years) have been admitted for transcatheter closure to prevent ongoing congestive heart failure from volume overload. However, recent data point to the risk of serious acute left ventricular dysfunction leading to pulmonary edema immediately after surgical or transcatheter ASD closure in some patients. In this study, we used a technique described before to recognize in advance patients at risk of left heart failure after ASD closure. Those patients at risk were then treated with preventive conditioning medication for 48-72 hr before definitive transcatheter ASD closure was performed. Fifty-nine patients aged over 60 years (range, 60-81.8 years; median, 68 years) were admitted to our institution for transcatheter closure of an atrial septal defect. All patients received evaluation of atrial pressures before and during temporary balloon occlusion of the ASD. Patients with left ventricular restriction due to increased mean atrial pressures (> 10 mm Hg) during ASD occlusion received anticongestive conditioning medication with i.v. dopamine, milrinone, and furosemide for 48-72 hr before definitive ASD closure with an Amplatzer septal occluder was performed. In 44 patients without any signs of left ventricular restriction, ASD closure was performed within the first session. Fifteen (25%) out of 59 patients showed left ventricular restriction. In the majority of patients with LV restriction, the mean left atrial pressures with occluded ASD were significantly decreased after 48-72 hr of conditioning medication. Definitive ASD closure was then performed in a second session. Only two patients received a fenestrated 32 mm Amplatzer occluder due to persistent increased atrial pressures > 10 mm Hg even after conditioning medication. There were no significant differences in shunt, device size, or defect size between the two groups. Balloon occlusion of atrial septal defects identifies patients with left ventricular restrictive physiology before ASD closure. Intravenous anticongestive conditioning medication seems to be highly effective in preventing congestive heart failure after interventional closure of an ASD in the elderly patient with a restrictive left ventricle.     

国产房间隔缺损封堵器的实验研究

目的　通过外科手术创建的房间隔缺损动物模型评价国产心健TM 房间隔缺损封堵器介入治疗的可行性、安全性、有效性。方法　体外循环下 ,在幼猪的房间隔剪一个缺损口形成房间隔缺损 (ASD)动物模型 ,7d后行房间隔缺损封堵术。术后进行超声心动图、大体解剖、扫描电镜和透射电镜检查。结果　共 8只猪建立了房间隔缺损模型并进行封堵术 ,封堵器放置的成功率为 10 0 % ,超声心动图随访无残余分流 ,动物生长发育正常 ,无严重并发症出现。 1～ 6个月大体解剖可见封堵器与房间隔组织紧密嵌合 ,表面被一层白色半透明组织覆盖 ,电镜证实为内皮组织。结论　国产心健TM 房间隔缺损封堵器关闭外科手术创建的ASD模型可行、安全、有效     

Is there a role for surgery in the management of isolated secundum atrial septal defect in adults?

Isolated atrial septal defect (ASD) is the most common form of congenital heart abnormalities in adults and approximately 80% are located in the region of the fossa ovalis (ostium secundum ASD).1 Indications for closure are in cases where the ratio of pulmonary-to-systemic flow (Qp/Qs) is higher than 1.5, without significant elevation of pulmonary vascular resistance.Surgical closure of ASDs has been performed for over 60 years and techniques have steadily improved, using smaller incisions and minimally invasive techniques. On the other hand, in the last 20 years, various transcatheter ASD closure techniques and devices have been developed, among which, percutaneous treatment with a septal occluder device is the most popular.2,3Despite increasing use of occluder devices and the fact that studies have been published internationally pointing out some of the advantages and disadvantages compared with surgery in adults, no formal comparison of efficacy, morbidity and complications has been published.2-4 We present a retrospective comparison of short-term (three months) results for transcatheter and surgical closure of 163 ostium secundum ASD patients in a university hospital.     

Transcatheter Closure of Secundum Atrial Septal Defects Using the Amplatzer Septal Occluder: Initial Experience in Taiwan

We assessed the safety and efficacy of closure of secundum-type atrial septal defects (ASDs) using the Amplatzer septal occluder (ASO) in a sample of Taiwanese patients. Between June 2000 and April 2002, 25 patients underwent transcatheter closure of their secundum-type atrial septal defect/s using the ASO device. The procedures were performed under general anesthesia with access through the femoral vein using guidance provided by transoesophageal echocardiography (TEE) and fluoroscopy. Twenty-two patients had larger defects with right cardiac dilatation and paradoxical interventricular septal motion, while family concerns were the primary indications for closure for the other three. Twenty-five ASO devices were successfully implanted in 24 patients, with a lone individual referred for surgery due to implantation failure. The mean age of the patients was 12.5 years. The male-female ratio was 12:13. The mean pulmonary-systemic blood flow ratio (Qp:Qs) was 2.5:1. The ASD size (mean 20.2 mm; range 8–28.5) was measured using transoesophageal echocardiography, with a balloon-stretched diameter of 8–29.5 mm (mean 20.5). The size of the implanted devices ranged from 9–36 mm (mean 23.1). Fluoroscopy duration ranged from 9.7–41.2 minutes (mean 23.5). A residual shunt, assessed not significant from transoesophageal echocardiography, was detected in one patient who had received two ASO devices for multiple ASDs. Follow-up intervals ranged from 0.1–2 years (median 1.0), with no late complications determined for any patient. Transcatheter closure of secundum ASDs using the Amplatzer septal occluder is a safe and effective alternative to the surgical analog. With careful selection of patients, secundum ASDs can be successfully closed, with minimal procedural morbidity and excellent early results. Long-term follow up is necessary for evaluation, however, if this procedure is to be as effective as surgery.     

Role of intracardiac echocardiographic guidance in transcatheter closure of atrial septal defects and patent foramen ovale using the Amplatzer device

Transesophageal echocardiography (TEE) has been successfully used for guiding transcatheter device closure of secundum atrial septal defect (ASD) and patent foramen ovale (PFO). However, the use of TEE for device closure requires general anesthesia. Experience with intracardiac echocardiographic (ICE) guidance to close ASD and PFO is limited. One hundred eleven patients (76 female/35 male) with secundum ASD (82 patients) and PFO (29 patients) associated with a stroke underwent an attempt of transcatheter closure of their defects under ICE guidance using the new AcuNav catheter. The median age of patients was 40 years (range 2.5-80.7) and the median weight was 66 kg (range 12.7-128 kg). The median two-dimensional size of secundum defects as measured by ICE was 17 mm (range 3-32 mm). The median balloon stretched diameter of the ASDs was 22 mm (range 4-36 mm). Five patients had more than one defect that required placement of two devices to close the defects. The median Qp/QS ratio for patients with secundum ASD was 2.1 (range 1-18). ICE provided adequate views of the defects and surrounding structures and the various stages of device deployment. All patients had successful device placement, including the patients who received simultaneous two devices with immediate complete closure of the defects in 100 patients, whereas four and seven patients had trivial and small residual shunt, respectively. The median fluoroscopy time was 10.2 minutes (range 3.7-38.4 minutes) and the median total procedure time was 60 minutes (range 28-180 minutes). There were no complications related to the use of the AcuNav catheter. We conclude that ICE provided unique images of the atrial communications and facilitated device closure of secundum ASD and PFO in children and adults. We believe ICE should replace TEE as a guiding imaging tool for ASD and PFO device closure, thus eliminating the need for general anesthesia.