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Patch Aortoplasty for Infant Coarctation of the Aorta with Hypoplastic Aortic Arch

Abstract: Objective To summarize the clinical experiences of resection with patch aortoplasty for infant coarctation of the aorta combined with aortic arch hypoplasia. Methods Between May 2007 and December 2009, 49 patients including 30 males and 19 females with coarctation with hypoplastic aortic arch underwent coarctation resection and patch aortoplasty in Shanghai Children’s Medical Center, School of Medicine, Shanghai Jiaotong University. The age of the patients ranged from 23 days to 3 years and 1 month with thirtyfour patients under 6 months, ten between 6 months and 1 year old, and five more than 1 year old. The surgery under deep hypothermia cardiopulmonary bypass with selective cerebral perfusion were performed in 31 cases and circulation arrest in 15 cases; under moderate hypothermia cardiopulmonary bypass in 3 cases. Pericardia patch was used in 31 cases, pulmonary autograft patch in 14 cases and xenograft pericardia patch in 4 cases. The associated intracardiac anomalies were repaired in the same stage. Results One case died from circulation failure during the perioperative period. The operative mortality was 204% (1/49). Low cardiac output syndrome and renal failure respectively occurred in 5 cases and 1 case who were cured afterwards by correspondent treatments. No residual obstruction was detected by echocardiography after the operation. Followup was carried out in fortyeight cases for a minimum of 4 months and a maximum of 3 years. Echocardiographic examination showed that the gradient through the aortic arch was more than 40 mm Hg and computed tomography showed recoarctation in 1 case who underwent reoperation eight months after the operation; the gradient was more than 20 mm Hg in 2 cases who were under continuous observation; all the rest cases had a fine aortic arch morphology and for these patients, the blood velocity at descending aortic arch was not obviously changed during the followup period compared with that right after operation, the computed tomography showed a normal aortic arch geometry. Left bronchus compression was relieved obviously or totally disappeared in patients who suffered from left bronchus stenosis before the operation without any aortic aneurysm detected. Conclusion Coarctation resection with patch aortoplasty is considered as an optimal surgical method for management of infant coarctation with hypoplastic aortic arch.

成人主动脉缩窄的临床特点和外科矫正

目的探讨成人主动脉缩窄的临床特点和外科治疗方法。方法40例成人主动脉缩窄患者行手术矫治，其中心脏不停跳手术28例，常规体外循环下手术12例。行主动脉狭窄段切开、人工血管补片扩大术12例，人工血管置换术15例，锁骨下动脉降主动脉旁路移植术1例，采用人工血管行胸一腹主动脉旁路移植术9例，经心包后径路行升主动脉一降主动脉旁路移植术3例。结果全组无手术死亡，几种术式术后均无脑部和脊髓等神经系统并发症。术后36例得到随访，平均随访12个月。36例患者上、下肢血压差均小于10mmHg（1kPa－7．5mmHg）。超声心动图和超高速CT检查提示人工血管血流通畅，无假性动脉瘤形成。结论成人主动脉缩窄的外科术式有多种选择，掌握好手术适应证，根据患者的具体病理生理状况选择合适的手术方式可获得满意的治疗效果。

主动脉-股动脉分流用于合并心力衰竭的主动脉缩窄矫正术一例

Surgical Managemen t for Coarctation of Aorta Associated with Heart Anomalies in Infan ts

Corresponding author: Y I Ding -hua, E -mail: yidh@fmmu. edu. cnAbstract: 　Objective　To investigate the optimal surgical approaches for coarctation of aorta (CoA ) associated with heart anomalies (CoA -HA ) in infants through analyzing the immediate and long-term outcome post-operation. Methods　From May 1998 to November 2006, 29 patients with CoA -HA were admitted to this institute. Subclavian flap angioplasty was performed in three patients, excision of coarctation and end-to-side anastomoses in six pat ients,and end-to-end anastomoses in the remaining 20 pat ients. Their clinical data were retrospect ively reviewed and the long-term follow -up results obtained through telephone o r letters. 　Results　Three patients died of operations, of whom one died of low cardiac output syndrome, one died of sepsis and one died of multiple organs failure. In two months’to eight years’follow -up , no later death and severe neurological complications were found. Two patients suffered from recurrent coarctation, but had no sense of symptoms and free from re-operation. In all pat ients neither systemic hypertension, nor arterial aneurysm and aortic valve regurgitation were found. 　Conclusions　Mortality of surgical corrections is accepted fo r CoA -HA in infants. Preoperative heart dysfunction and prolonged mechanical ventilation are the high risks of operative death. Recurrent coarctation is the major later comp lication.

小儿主动脉缩窄或主动脉离断合并心内畸形的诊断与外科治疗

目的　探讨主动脉缩窄（CoA）或主动脉离断（IAA）合并心内畸形的诊断及手术方式选择。　方法　2003年1月至2010年3月济宁医学院附属医院手术治疗14例小儿CoA（9例）或IAA（5例）合并心内畸形 ［包括室间隔缺损（VSD）、房间隔缺损（ASD）、房室隔缺损（APSD）等畸形，但不包括单纯合并动脉导管未闭（PDA）］ 患者， 其中男10例，女4例；年龄0.7～12.0 （3.2±4.5）岁；体重5.5～25.5 （10.2±5.5） kg。分期手术3例，经胸骨正中切口径路一期手术矫治11例。　结果　手术死亡2例，其中1例为分期手术，二次手术行VSD修补术后死于急性左心衰竭；1例术前诊断为VSD＋PDA合并重度肺动脉高压，术前未发现IAA，术后死于急性肾功能衰竭。随访12例，随访时间6～84 （32±22）个月，患者恢复良好。复查心脏超声心动图提示：胸主动脉轻度狭窄2例，继续随访观察。　结论　多层螺旋CT和核磁共振成像是目前诊断CoA和IAA的首选检查方法。经胸骨正中切口径路一期手术治疗CoA或IAA合并心内畸形婴幼儿，可获较好的显露及疗效。

EarlyMid Term Results after OneStage Repair for Transposition of the Great Arteries and TaussigBing Anomaly with Aortic Arch Abnormally in Infant

摘要:目的:回顾性研究大动脉转换术同时进行主动脉弓矫治的I期手术治疗完全性大动脉错位或TaussigBing合并主动脉弓畸形的早中期效果。方法:2000年1月至2008年12月,连续对26例存在主动脉弓畸形的完全性大动脉错位或TaussigBing畸形的小婴儿进行了I期手术矫治,其中完全性大动脉错位13例(TGA/VSD 11例,TGA/IVS 2例),TaussigBing 13例;主动脉弓畸形中主动脉弓中断(A型)7例,CoA19例,6例伴有冠状动脉异常类型。平均手术年龄(28±35) d,lt;2个月占62％,手术平均体重为(4.19±1.15) kg。在深低温停循环或深低温低流量下进行主动脉弓畸形矫治,采用自身组织直接吻合扩大或重建弓,伴有弓部发育不良者补片扩大成形。伴有冠状动脉畸形者在大动脉转换手术中冠状动脉移植方法予改良处理。〖HTH〗结果〖HTSS〗:手术住院死亡3例(11.5%),死因与冠脉移植无关。平均插管时间102 h,监护室时间平均8 d。术后早期生存者主动脉瓣上压力阶差gt;30 mm Hg有2例,主动脉瓣反流轻度2例。单因素分析中伴有冠状动脉异常类型者与术后早期死亡或并发症的风险相关,多因素分析示其与手术年龄、肺动脉高压、术前FS、主动脉阻断时间、术后血清乳酸水平相关。随访期3个月~7年,无死亡,术后5年实际生存率为88.5％(95％ 可信度范围CI 76％～96％),术后1年、5年无需介入干预或手术分别为91.4％、87％。结论:TGA和TaussigBing伴有主动脉弓畸形者I 期进行大动脉转换术和主动脉弓畸形矫治早中期效果良好,早期手术并发症和死亡的风险因素为年龄偏大,肺高压严重,把握手术时机是手术成功要则之一。Abstract: Objective: The study was to evaluate earlymid term results after onestage arterial switch operation (ASO) associated with aortic arch repair for D Transposition of the great arteries (DTGA) and TaussigBing Anomaly with arch abnormally in infant. 〖WTHZ〗Methods〖WTBZ〗: Between January 2000 and December 2008, a primary operation including aortic arch repair through a midline sternotomy was performed in 26 patients, 13 patients with DTGA and 13 TaussigBing. Most patients (62%) underwent operation during the first two months. The repair of arch was accomplished under deep hypothermic circulatory arrest or low flow, employing a wide pericardial patch to reconstruction of arch in some patients or direct ananstomosis. Results: There were 3 (11.5%) hospital deaths. The high risk factors for early mortality and morbidity were unsuitable reconstructed arch, higher age, severe pulmonary hypertension and longer aortic crossclamp time. There were no late deaths. Actuarial 5year survival was 88.5% (95% CI 70% to 96%). Actuarial freedom from overall reintervention, reoperation among operative survivors was 91.4% at 1 year and 87% at 5 years, respectively. Conclusion: the singlestage repair for DTGA and TaussigBing with aortic arch abnormally is suitable choice for infant, and followup of operative survivors is favorable. Optimal operative time was as sooner as possible.

Extraanatomic Aortic Bypass Grafting Through Median Sternotomy for Onestage Treatment of Aortic Coarctation and Associated Cardiac Diseases

Objective To summarize the experience of extraanatomic aortic bypass grafting through median sternotomy for onestage treatment of aortic coarctation and associated cardiac diseases, and to improve surgical effect of the diseases. Methods Between July 1997 and July 2008, 31 consecutive patients(20 male,11 female; age 31.9±11.7 years) with aortic coarctation and associated cardiac anomalies underwent onestage surgical repair through median sternotomy. The associated cardiac anomalies included: aortic valve insufficiency or stenosis(n=22); mitral valve insufficiency or stenosis (n=9); patent ductus arteriosus (n=5); ascending aortic aneurysm (n=4); ventricular septal defect (n=3); coronary artery disease (n=2). Extra-anatomic aortic bypass grafting was used to repair the coarctation. Routing of the grafts was: ascendingto posterior pericardial descending aorta (n=9) and ascendingtoinfrarenal abdominal aorta (n=22). Concomitant cardiac procedures included: aortic valve replacement in 16; Bentall procedures in 6; mitral valve repair or replacement in 9; ascending aortic replacement or aortoplasty in 4; patent ductus arteriosus closure in 5; ventricular septal defect closure in 3 and coronary artery bypass grafting in 2. Results One patient died of septic shock 39 days after operation with an inhospital mortality of 3.2%. Mean systolic blood pressure gradient between upper and lower extremities decreased from 64.2±25.3 mm Hg preoperatively to 13.7±10.2 mm Hg postoperatively (Plt;0.05). Twentyseven patients were followed up from 4 to 73 months, there were no late deaths，reoperations or graftrelated complications. Conclusion Extraanatomic aortic bypass grafting can be performed simultaneously through median approach in patients with aortic coarctation and associated cardiac diseases. It is an effective and safe treatment option for onestage surgical repair in adults and adolescents. Both ascendingto posterior pericardial descending aorta and ascendingtoinfrarenal abdominal aorta bypass have favorable results.

半身体外循环技术在主动脉缩窄矫治术中的应用

目的 探讨心脏不停跳下半身体外循环（partial cardiopulmonary bypass，PCB）在主动脉缩窄矫治术中的应用。 方法 回顾性分析 2016 年 3 月至 2017 年 8 月我院经左后外侧切口行缩窄主动脉段置换术 5 例男性主动脉缩窄患者的临床资料，平均年龄（22.80±14.22）岁。术中经降主动脉和左肺动脉分别插入动脉灌注管和静脉引流管，连接人工膜肺和滚轴泵，建立 PCB。采用心脏不停跳的方法，避免深低温（鼻咽温度 33℃ 以上），控制灌注流量在 15～50 ml/（kg·min），维持上肢血压 60～100 mm Hg 和下肢血压 50～80 mm Hg。 结果 PCB 平均转流时间为（77.40±17.85）min，均平稳脱离体外循环。术后平均住 ICU 时间（25.00±14.17）h。所有患者无截瘫、肾损害等并发症。短期随访没有主动脉再狭窄现象。 结论 心脏不停跳下经降主动脉和左肺动脉插管建立 PCB 的技术在青少年或成人主动脉缩窄矫治术中安全、可行，能避免深低温及内脏和脊髓损伤。

停循环技术应用于升主动脉-胸降主动脉人工血管旁路移植治疗主动脉缩窄

目的总结经单一胸部正中切口采用低温停循环技术行解剖外升主动脉-胸降主动脉人工血管旁路移植术治疗主动脉缩窄的经验。方法回顾性分析 2009 年 12 月至 2018 年 5 月我院连续 12 例主动脉缩窄患者的临床资料。其中男女各 6 例，年龄 13～42 岁，均有高血压症状，上下肢动脉收缩压差 46～85（57.1±16.8）mm Hg。手术经胸部正中切口，采用体外循环及深低温停循环技术，行升主动脉-心包后胸降主动脉人工血管旁路移植术。结果人工血管平均直径 14～20（17.2±1.8）mm，体外循环时间 69～197（115.9±40.6）min，主动脉阻断时间 41～142（69.8±30.7）min，深低温停循环时间 9～27（16.8±4.1）min。所有患者均未输血，无严重并发症。术后上下肢动脉收缩压差值为 –12～22（14.3±4.8）mm Hg，较术前显著下降（P<0.01）。所有患者均康复出院，平均随访 3～91（41.9±21.5）个月，随访期间仅 1 例患者术后需要服用 1 种降压药物，其余患者均正常。结论深低温停循环下经胸部切口行解剖外人工血管旁路移植术治疗主动脉缩窄安全有效，未来需要更多病例进一步验证。

Offpump Anatomic Surgical Repair for Complex Coarctation in Adults

Abstract： Objective To investigate the clinical results of offpump anatomic surgical repair for complex coarctation in adults. Methods We retrospectively analyzed the clinical data of 7 patients with complex coarctation who underwent onestage anatomic surgical repair between January 2005 and December 2008 in Fu Wai Hospital. There were 5 males and 2 females with the age ranged from 16 to 41 years, average at 24.4 years. Among all the patients, there were 2 patients of coarctation with hypoplastic aortic arch, 1 of coarctation with aortic arch aneurysm, 3 of coarctation with descending thoracic aortic aneurysm, and 1 of coarctation with B type aortic dissection. All patients were diagnosed by color echocardiography, CT or agnetic resonance imaging（MRI）. All off-pump operations were performed under general anesthesia and ambient temperature. Median sternotomy was performed in 1 patient and left thoracotomy in 6 patients. Aortic arch patching enlargement was performed in 4 patients and descending thoracic aorta replacement in 3 patients (including 1 combined with abdominal aorta replacement and 1 case of Stanford B type aortic dissection, trunk stent was transplanted at the same time). Results There was no hospital mortality or severe surgical complications. Seven patients were followed up for a period ranged from 6 to 49 months with an average time of 20.1 months. No late death or recoarctation occurred. Hoarseness occurred in one patient and presented no improvement during the 11 months follow-up. Conclusion Onestage offpump anatomic surgical repair is safe and feasible in treating adult patients with complex coarctation, and it shows a good immediate and longterm result.