Stent angioplasty to relieve left pulmonary artery obstruction caused by patent ductus arteriosus device occlusion

A 7‐month‐old patient in congestive heart failure due to a moderate sized patent ductus arteriosus (PDA) underwent uncomplicated implantation of an Amplatzer Ductal Occluder (ADO1). Two months after percutaneous device PDA closure, left pulmonary artery (LPA) stenosis was discovered. Rather than spontaneous improvement as reported in previous cases, our patient's LPA stenosis progressed in severity 7 months after ADO1 placement. A catheterization demonstrated a 32 mm Hg peak gradient from her main pulmonary artery to her LPA. She underwent successful stent angioplasty of her LPA with an excellent result and preserved PDA closure. This case demonstrates that stent angioplasty is a feasible an effective method of relieving LPA obstruction caused by a PDA occluder device. Additionally, despite slight deflection by the stent, the ADO1 device continued to provide complete ductal closure. Stent angioplasty should be considered in patients who have LPA stenosis caused by ADO1 occluder device that does not improve over time. © 2013 Wiley Periodicals, Inc.     

Fermeture percutanée des communications interventriculaires congénitales par la prothèse Amplatzer Duct OccluderII: données préliminaire d’une étude Tunisienne monocentrique

Introduction . Percutaneous closure of congenital ventricular septal defects (VSDs) represents a promising alternative to surgery with lower rate of complications and shorter hospital stay. Its main limitation is the choice of the appropriate device for each type of defect. Aim. To report the experience of the service of cardiology (Sahloul hospital, Sousse, Tunisia) in percutaneous closure of congenital VSDs with Amplatzer Duct Occluder II (ADOII). Methods. This was a retrospective, monocentric study, conducted from January 2013 to December 2017. The study included patients treated by percutaneous closure of congenital VSDs with the ADOII device. Results. Twelve patients (6 boys; 6 girls) were included. The mean±SD of patients’ age and weight were 65±41 months and 23±10 kg, respectively. VSDs were peri-membranous (n=9) and muscular (n=3), and defects were restrictive (n=11) and non-restrictive (n=1). The mean (minimum-maximum) size of VSDs was 4.72 (3-6) mm. Eleven ADOII prostheses were successfully implanted. One failure procedure was noted with migration of the device into the pulmonary artery. A second child with perimembranous defect developed transient atrioventricular block. No deaths occurred. Conclusion. The present early experience shows that percutaneous closure with ADOII device of perimembranous and trabecular VSDs is safe and effective.     

Operating microscope light-induced retinal injury: Mechanisms,clinical manifestations,and preventive measures

Experimental and clinical evidence of light-induced retinal injuryassociated with the operating microscope is reviewed. The mechanism of photochemical injury is discussed, as well as the concept of reversible phototoxic insults. Factors that influence retinal recovery and measures that can be taken by the surgeon to reduce light exposure to the retina are also discussed.     

蘑菇伞封堵器介入治疗婴幼儿动脉导管未闭的临床研究

目的 评价3岁以内婴幼儿动脉导管未闭应用蘑菇伞封堵器介入治疗的临床效果.方法 全组21例,年龄9个月～3岁,平均(2.2±0.8)岁,体重6.0～13.2 kg,平均(12.6±2.5)kg.主动脉侧位造影确定动脉导管的形态和导管最窄处直径,选择合适封堵器.经静脉途径置入封堵器.术后24 h、1个月、3个月、1年、2年及3年复查胸部X线平片及超声心动图和心电图观察封堵器的位置、残余分流情况、肺动脉压及心脏大小.结果 21例患儿植入封堵器均获成功,技术成功率为100%.造影测定PDA最窄处直径2.5～10.9(5.8±2.6)mm.应用直径4～18 mm大小的PDA封堵器进行封堵.随访无严重并发症.结论 应用蘑菇伞封堵器治疗婴幼儿期动脉导管未闭具有操作简便、安全有效、技术成功率高及封堵效果好等优点.     

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.     

应用Amplatzer封堵器经皮导管堵闭房间隔缺损(ASD)疗效评价(附16例报告)

目的　评价应用Amplatzer封堵器经皮导管堵闭房间隔缺损 (ASD)治疗效果。方法　全组 1 6例 ,年龄 8- 58(31± 1 6)岁 ,体重 2 3 - 67(49.1 9± 1 0 .2 1 )kg ,术前经胸超声心动图 (TTE)或经食管超声心动图 (TEE)检查示ASD直径为 1 2 - 36(1 8.64± 6 .2 8)mm。所有病例均在透视及TTE或TEE指导下经导管置入Amplatzer封堵器堵闭ASD。 1例存在大小紧邻的两个房间隔缺损 ,采用较大封堵器一并封堵两个缺损。术后 2 4小时、1月、3月及 6月分别行TTE、心电图及X线检查评价治疗效果。结果　 1 6例ASD球囊测量伸展径为 1 4 - 38(2 1 .46± 6 .1 9)mm选择的封堵器直径为 1 6 - 4 0 (2 6 .1 2± 5 .83)mm。 1 6例封堵器置入均获得成功。手术成功率为 1 0 0 % ,术中未发生任何重要并发症。术后即刻TTE或TEE显示 2例存在微量至少量残余分流。术后 2 4小时行TTE检查示仅 1例合并两个房缺的患者存在残余少量左向右分流。术后 3月TTE示该例残余分流消失。 1 1例完成术后 6月随访 ,未见残余分流及再通。结论　经导管置入Amplatzer封堵器治疗ASD是一种有效的非手术方法 ,具有操作简便、安全、技术成功率高及封堵效果好等优点 ,适合于各年龄组选择性的继发孔型ASD的介入治疗。其临床应用的远期疗效尚需继续观察