Procedural results and 30-day clinical events analysis following Edwards transcatheter aortic valve implantation in 48 consecutive patients: initial experience

Background  Transcatheter aortic valve implantation (TAVI) is a rapidly evolving strategy for therapy of aortic stenosis. We presented the procedural results and analyzed the death causes of 30-day mortality and clinical events in patients who underwent TAVI with Edwards prosthetic valves in University Hospital of Caen, France.

Methods  The patients with severe aortic stenosis but at high surgical risk or inoperable were considered as candidates for TAVI. Forty-eight patients undergoing TAVI from July 2010 to September 2011 were enrolled in this registry. The Edwards prosthetic valves were solely used in this clinical trial.

Results  Overall 48 patients underwent TAVI, 28 of which accepted TAVI by trans-femoral (TF) approaches, 20 by trans-apical approaches (TA). The aortic valve area (AVA) was (0.70±0.23) cm², left ventricular ejection fraction (LVEF) was (57.4±17.6)%, Log EuroSCORE was (19.2±15.8)%, mean gradient was (47.0±16.6) mmHg. There were no significant differences between TF and TA groups in all these baseline parameters. Device success rate was 95.8%, and procedural success rate was 93.7% in total. Procedural mortality was 6.7% (3/48): two deaths in TA group (10%), and one death in TF group (3.6%). Forty-six Edwards valves were implanted: 10 Edwards Sapien and 36 Edwards XT. Procedure-related complications included cardiac tamponade in 2 cases (4.2%), acute myocardial infarction (AMI) in 1 case (2.1%), permanent pacemaker implantation in 1 case (2.1%), life-threatening and major bleeding in 3 cases; access site related major complication in 1 case, AKI stage 3 in 3 cases (6.3%), minor stroke in 1 case (2.1%). Thirty-day survival rate was 89.6%. There were 5 deaths in total (10.4%): 4 in TA group (20%) and 1 in TF group (3.6%).

Conclusion  The procedural success rate and 30-day mortality were acceptable in these high risk patients with Edwards prosthetic valves in the first 48 TAVI.

     

二维超声心动图评价经导管主动脉瓣置入术后早期左心形态及收缩功能

目的 利用二维超声心动图监测并分析经导管主动脉瓣置入术（TAVI）术后早期患者心脏形态及功能状态。方法 选择2017年12月至2019年12月在我院心血管外科就诊并行TAVI的33例患者,收集患者年龄、性别、NYHA心功能分级、既往心脏外科手术史、美国胸外科医师学会（STS）评分、手术入路、并发疾病等基本资料,以及术前和术后早期（0~2个月）超声心动图检查数据。结果 33例患者中重度主动脉瓣狭窄（SAS）组20例,重度主动脉瓣反流（SAR）组8例,SAS合并SAR组（合并组）5例。术后早期SAS组1例患者2次因心律失常加重心力衰竭再次住院治疗,4例患者出现微量瓣周漏,1例患者出现大量瓣周漏;SAR组1例患者出现中度瓣周漏;合并组1例患者出现轻度瓣周漏。与术前相比,术后早期33例患者总体左心室舒张末期容积（LVEDV）、左心房容积（LAV）、最大主动脉瓣跨瓣压差（AVPG_max）均下降（P均<0.01）,主动脉瓣有效瓣口面积（AVA）增加（P<0.01）,左心室射血分数（LVEF）、室间隔厚度（IVST）、后壁厚度（PWT）均未发生明显变化（P均>0.05）;SAS组LVEF升高（P<0.05）,LAV、AVPG_max均下降（P<0.05,P<0.01）,AVA增加（P<0.01）;SAR组LVEDV、LAV均下降（P均<0.01）,IVST增加（P<0.05）;合并组LVEDV、LAV、AVPG_max均下降（P均<0.05）,AVA增加（P<0.01）。结论 对于SAS、SAR和SAS合并SAR患者,TAVI术后早期心脏逆重构、收缩功能均有不同程度改善。单纯SAR及合并SAS的高危患者可从TAVI获益。     

Transcatheter aortic valve replacement in the developing world: Lessons learnt and its implications for practice

BackrgroundTranscatheter aortic valve replacement (TAVR) has become an accepted modality of treatment in intermediate and high surgical risk patients of symptomatic severe calcific aortic stenosis (AS). We herein report Indian data of 84 intermediate and high-risk patients who underwent TAVR at two Armed Forces cardiac centres.MethodsMost of the patients underwent TAVR in cardiac catheterization lab by percutaneous transfemoral approach, under conscious sedation. Patients were followed up and echocardiographic parameters were assessed after six months of procedure.ResultsTotal of 84 intermediate and high-risk patients underwent TAVR between Jan 2017 and June 2021. Mean age of population was 71.5 ± 8.4 years; 28.5% of patients had bicuspid aortic valve and Mean STS score was 6.34 ± 2.08. Majority (92.8%) patients underwent the procedure under conscious sedation. Self-expanding valves were used in 72.6% and balloon expandable in 27.4% of patients. Predilatation was done in 64% patients while 13% cases underwent post dilatation. Procedural mortality was 2.3%. Rate of permanent pacemaker implantation was 4.9%. Ischemic stroke occurred in 1.1% of patents. There was no case of severe paravalvular leak. Emergency surgical aortic valve replacement was done in 2.4% patients. Procedural success in this study was 97.6%. All-cause mortality was 9.5% at 6 months.ConclusionsTAVR is an effective treatment modality in intermediate and high-risk Indian patients with severe aortic stenosis. Patients with bicuspid or previous bio prosthetic aortic valves also have a good outcome post TAVR.     

Transcatheter aortic valve implantation versus surgical aortic valve replacement for severe aortic stenosis: a meta analysis

Background Transcatheter aortic valve implantation (TAVI) has emerged as the treatment choice for non-operable patients with severe symptomatic aortic stenosis (AS) and may be a good alternative to sur...     

First transcatheter aortic valve implantation for severe pure aortic regurgitation in Asia

Transcatheter aortic valve implantation (TAVI) has become the standard of care for inoperable patients with symptomatic severe aortic stenosis (AS), and an alternative to open aortic valve replacement for patients at high surgical risk. TAVI has also been performed in several groups of patients with off-label indications such as severe bicuspid AS, and as a valve-in-valve therapy for a degenerated surgical bioprosthesis. Although TAVI with CoreValve® prosthesis is technically challenging, and global experience in the procedure is limited, the procedure could be a treatment option for well-selected patients with severe pure aortic regurgitation (AR). Herein, we report Asia''s first case of TAVI for severe pure AR in a patient who was at extreme surgical risk, with good clinical outcome at six months.     

Transcatheter aortic valve implantation: preliminary experience in West China Hospital

Transcatheter aortic valve implantation (TAVI) is a promising alternative to surgical aortic valve replacement for patients with symptomatic severe aortic stenosis (AS) who were deemed at a high surgical risk.This novel technique has kept evolving rapidly throughout the world in the past decade,but was not introduced to China until recently.Here we report our clinical experience in TAVI based on the largest cohort of Chinese patients in a single center.     

经导管主动脉瓣置换术的现状与发展趋势

目前,尽管严重主动脉狭窄的治疗指南仍以外科手术置换(surgical aortic valve replacement,SAVR)为治疗标 准,但随着大血管外科技术的不断发展,经导管主动脉瓣置换术(transcatheter aortic valve implantation,TAVI)逐渐成为 高危和禁忌SAVR患者的常规治疗措施。近年来各瓣膜厂商,包括国内医药公司,对瓣膜技术极力地推进,使得TAVI 技术取得了显著成效,加上其并发症也得到了有效控制,TAVI有望在治疗主动脉狭窄乃至关闭不全上取代传统术 式,应用前景可观。     

Improvement in left ventricular function assessed by tissue Doppler imaging after aortic valve replacement for severe aortic stenosis

INTRODUCTION

The effects of reduction of left ventricular (LV) systemic afterload following aortic valve replacement (AVR) for severe aortic valve stenosis (AS) were investigated, using echocardiography and tissue Doppler imaging (TDI).

METHODS

We compared the preoperative and postoperative echocardiographic assessments of 23 patients with severe AS who had undergone isolated AVR (n = 13) or concomitant AVR with coronary artery bypass grafting (CABG) (n = 10). Conventional echocardiographic evaluations and TDI at the lateral mitral annulus were performed.

RESULTS

Echocardiography was performed at a median of 120 (interquartile range: 66–141) days after AVR. There was significant reduction in aortic transvalvular mean pressure gradient after AVR. Although LV dimensions, mass and ejection fraction remained unchanged, LV diastolic and systolic functions improved (as observed on TDI). Early diastolic (E’), late diastolic (A’) and systolic (S’) mitral annular velocities increased significantly (p < 0.05). There was significant improvement in TDI-derived parameters among the patients who had isolated AVR, while among the patients who had concomitant AVR with CABG, only S’ had significant improvement (p = 0.028).

CONCLUSION

TDI was able to detect improvements in LV systolic and diastolic function after AVR for severe AS. There was less improvement in the TDI-derived diastolic parameters among patients who underwent concomitant AVR with CABG than among patients who underwent isolated AVR.     

Congenital quadricuspid aortic valve: analysis of 11 surgical cases

Background  Congenital quadricuspid aortic valve is rarely seen during aortic valve replacement (AVR). The diagnosis and treatment of the disease were reported in 11 cases.

Methods  Eleven patients (nine men and two women, mean age 33.4 years) with quadricuspid aortic valve were retrospectively evaluated. Medical records, echocardiograms and surgical treatment were reviewed.

Results  In accordance with the Hurwitz and Roberts classification, the patients were classified as type A (n=2), type B (n=7), type F (n=1) and type G (n=1). Three patients were associated with other heart diseases, including infective endocarditis and mitral prolaps, left superior vena cava, aortic aneurysm. All had aortic regurgitation (AR) except two with aortic stenosis (AS), detected by color-flow Doppler echocardiography. The congenital quadricuspid aortic valve deformity in seven patients was diagnosed by echocardiography. All patients underwent successful aortic valve replacement.

Conclusion  Quadricuspid aortic valve is a rare cause of aortic insufficiency, while echocardiography plays an important role in diagnosing the disease. Aortic valve replacement is the major therapy for the disease.

     

超声心动图在主动脉瓣反流患者经心尖主动脉瓣植入术中的应用

目的 探讨超声心动图在主动脉瓣反流患者经心尖主动脉瓣植入(transcatheter aortic valve implantation, TAVI)术前、术中及术后的作用。方法 31例中-重度单纯主动脉瓣反流或以主动脉瓣反流为主的外科开胸手术高风险患者行经心尖TAVI术。术前经胸超声心动图（transthoracic echocardiograghy,TTE）评估主动脉瓣反流程度、测量主动脉根部相关指标、左室收缩功能;术中介入操作前经食管超声心动图 (transesophageal echocardiography,TEE)再次准确评估,瓣膜植入过程中TEE联合X光造影指导人工瓣膜植入、监测并发症,术后即刻评估有无瓣周反流及程度;术后1周、1月TTE随访人工瓣膜血流动力学参数、有无相关并发症、左室收缩功能。结果 31例患者中,29例成功完成经心尖TAVI术。术后微量或无瓣周反流23例,轻度瓣周反流6例。左室舒张期内径、左室质量指数术后1周较术前显著减小,术后1月进一步减小（ P均<0.05),左室大小基本恢复正常;左室射血分数术后1周较术前降低（ P<0.05),术后1月恢复至术前水平。结论 经心尖TAVI术对于外科开胸手术高风险的主动脉瓣反流患者是一种安全有效的治疗方式,超声心动图在TAVI术前筛查及测量、术中监测、引导和术后随访中起着不可或缺的作用。     

第二版欧洲心脏手术风险评估系统模型对主动脉瓣置换手术患者在院死亡风险预测的评价

目的评价第二版欧洲心脏手术风险评估系统(EuroSCOREⅡ)模型对本中心主动脉瓣置换手术患者在院死亡率预测的准确性。方法回顾性收集中国人民解放军总医院心血管外科于2004年至2013年接受主动脉瓣置换术的483例患者的临床资料,其中男性358例,女性125例,平均(53.3±13.8)岁。分别按logistic EuroSCORE,STS score及EuroSCOREⅡ进行评分,并对比患者的实际死亡率与预测死亡率。模型预测的鉴别效度使用ROC曲线下面积进行检验,符合程度使用Hosmer—Lemeshowχ2检验。结果全组483例患者中术后在院死亡3例,实际在院死亡率为0.62%,logistic EuroSCORE,STS Score及EuroSCOREⅡ评估系统预测在院死亡率分别为2.94%,1.04%和1.18%。其中STS Score和EuroSCOREⅡ对全组患者住院死亡的预测具有较好的符合程度(P值分别为0.558和0.872),而logistic EuroSCORE符合程度欠佳(P=0.034)。EuroSCOREⅡ较logistic EuroSCORE,STS Score对全组患者的在院死亡预测的鉴别效度均更佳(ROC下曲线面积分别为0.874、0.814和0.867)。结论 EuroSCOREⅡ模型对本中心主动脉瓣置换手术患者在院死亡率预测的准确性较好,相对适合于本中心主动脉瓣置换手术的风险预测。     

经导管主动脉瓣膜植入术的可选瓣膜植入途径

经导管主动脉瓣膜植入术（TAVI）是介入方法治疗严重主动脉瓣狭窄的一种新技术,经过十余年的发展,TAVI的效果与中期存活率与外科手术治疗效果相当。随着输送装置、支架瓣膜的改进,TAVI的适应证扩大,安全性、有效性进一步提升。本文将TAVI术中瓣膜植入途径的现状作一介绍。     

退行性主动脉瓣病变合并冠心病的外科处理

目的探讨退行性主动脉瓣病变合并冠心病的手术时机及外科处理特点.方法选择退行性主动脉瓣病变合并冠心病患者进行主动脉瓣置换(AVR)及冠状动脉搭桥术(CABG)28例,其中严重主动脉瓣病变[严重狭窄或(和)严重关闭不全]合并不同程度冠心病24例,中度主动脉瓣病变[中度狭窄或(和)中度关闭不全]合并严重冠心病4例.手术均在低温体外循环下进行,置换生物瓣25枚,双叶机械瓣3枚,平均搭桥2.3±1.2支,术中放置主动脉气囊反搏(IABP)4例.结果围手术期死亡者3例,开胸止血者1例,延迟关胸者1例.术后瓣周漏保守治疗1例,其他均无严重并发症.随访6～35个月,心功能明显改善,心肌无缺血表现.术后病理诊断所有主动脉瓣均为退行性改变.结论退行性主动脉瓣病变合并冠心病有特殊的病理改变及手术处理方法,掌握好同时行主动脉瓣置换及冠状动脉搭桥手术时机亦十分重要.     

经导管主动脉瓣置换术后心脏传导阻滞情况分析

目的 探讨应用国产瓣膜的经导管主动脉瓣置换（TAVR）疗效和患者术后心脏传导阻滞发生情况及其对患者预后的影响。方法 选择2017年9月至2018年1月在我科行TAVR术的重度主动脉瓣狭窄或反流患者作为研究对象。应用国产的J-Valve或Venus-A瓣膜进行TAVR术,评估TAVR术后疗效和并发症发生情况,观察TAVR术中和术后新发心脏传导阻滞发生情况及住院期间心律失常恢复情况。根据出院时是否存在心脏传导阻滞,将患者分为心律正常组和传导阻滞组,比较两组患者的基线资料、术后情况和左心室结构与功能。结果 共入组16例患者,心律正常组12例、传导阻滞组4例。TAVR术后脑钠肽[（1 114.87±802.32）pg/mL vs（530.39±276.26）pg/mL,P=0.026]、主动脉瓣跨瓣压差[（83.06±37.76）mmHg vs（24.14±9.73）mmHg,P<0.001;1 mmHg=0.133 kPa]和主动脉瓣最大跨瓣流速[（466.00±82.30）cm/s vs（249.30±43.98）cm/s,P<0.001]降低,左心室舒张末期内径缩小[（5.41±0.83）cm vs（4.93±0.52）cm,P=0.010]。术后无或仅有微量至少量主动脉瓣反流,2例有肾功能不全基础疾病的患者出现肾功能恶化,其中1例予以血液透析治疗。所有患者住院期间均无死亡、急性心肌梗死、脑卒中、严重血管并发症等不良事件发生。共有4例（25.00%）患者出现新发心脏传导阻滞,其中1例为完全性房室传导阻滞,住院期间恢复为完全性左束支传导阻滞;1例为室内传导阻滞,住院期间发展为完全性左束支传导阻滞;另2例为完全性左束支传导阻滞。这4例患者出院时完全性左束支传导阻滞均未恢复。无住院期间需要置入永久性心脏起搏器的患者。心律正常组和传导阻滞患者术后肝肾功能、血红蛋白水平、脑钠肽水平及左心室结构与功能上的差异均无统计学意义（P均>0.05）。结论 应用国产介入瓣膜的TAVR术能有效降低患者主动脉瓣跨瓣压差且并发症少,术后可能发生完全性左束支传导阻滞等心脏传导阻滞,但此类传导阻滞在术后短期对心脏不良事件的发生和心功能无明显影响。     

先天性主动脉瓣二叶畸形的外科治疗

目的 总结先天性主动脉瓣二叶畸形患者的临床特点及外科治疗经验.方法 回顾性分析2008年1月-2010年12月我科行外科手术治疗的先天性主动脉瓣二叶畸形患者34例,年龄23-78(51.0±12.4)岁,其中男性28例(82.3%),女性6例(17.6%).单纯主动脉瓣狭窄10例(29.4%),主动脉瓣狭窄伴关闭不全19例(55.8%),单纯主动脉瓣关闭不全5例(14.7%).合并主动脉根部扩张30例(88.2%),合并感染性心内膜炎6例(17.6%).行单纯主动脉瓣置换术32例,行Bentall 术1例,主动脉瓣置换+ 升主动脉置换术1例.其中21例植入机械瓣,13例植入生物瓣.结果 无死亡及其他严重并发症.术后超声心动图示升主动脉内径((45.4±5.9)mm vs(40.9±6.5)mm,P<0.05)及左室舒张末内径(LVEDD)((56.9±15.5)mm vs 年44.3±9.0)mm,P<0.05)较术前明显减小.结论 先天性主动脉瓣二叶畸形合并主动脉根部扩张要根据病情行不同方式手术.     

经主动脉途径植入主动脉支架瓣膜一例报道

经导管主动脉瓣植入术（TAVI）是治疗主动脉瓣狭窄患者的新技术,适用于无法外科手术和外科高风险的主动脉瓣狭窄患者,其常规植入途径为股动脉和心尖。该文介绍1例92岁高龄患者,经股动脉途径植入主动脉瓣失败后,改由经主动脉途径植入的成功经验。     

斑点组织追踪对体外膜氧合辅助下经导管主动脉瓣植入术的疗效评价

  目的  探讨二尖瓣环位移斑点组织追踪技术(TMAD)在体外膜氧合(ECMO)辅助下经导管主动脉瓣植入(TAVI)治疗重症主动脉瓣狭窄(AS)患者的应用价值。  方法  对2019年9月—2021年3月在河南省胸科医院ECMO辅助下行TAVI手术的16例左室射血分数(LVEF)＜25%重症AS患者进行回顾分析。统计分析该组患者TAVI治疗前、ECMO撤除后即刻、术后1个月斑点组织追踪参数[二尖瓣环平均位移(TMADmid)、二尖瓣环平均位移率(TMADmid%)、整体纵向收缩期峰值应变(GLS)]及常规超声心动图参数[LVEF、左心室舒张末期内径(LVEDd)、每搏输出量(SV)]的变化,分析斑点组织追踪技术对ECMO辅助下TAVI术后疗效的评价价值。  结果  本组患者TAVI术前、ECMO撤除后即刻、术后1个月斑点组织追踪参数TMADmid[(3.2±1.3)mm,(6.9±1.3)mm, (11.2±2.5)mm]、TMADmid%[(3.5±2.6)%,(7.0±3.8)%, (10.1±2.1)%]和GLS[(5.9±3.5)%,(8.9±2.7)%, (13.2±3.9)%]逐渐增高,组间差异均有统计学意义(均P < 0.05);术后1个月LVEF[(42.2±5.3)%]较术前[(22.2±5.5)%]及ECMO撤除后即刻[(23.8±2.5)%]升高, 差异有统计学意义(均P < 0.05);与术前LVEF相比,ECMO撤除后即刻LVEF升高,差异无统计学意义(P>0.05)。TMADmid、TMADmid%与GLS呈正相关关系(r=0.499、0.586,均P < 0.05)。  结论  二尖瓣斑点组织追踪技术可作为评价AS患者TAVI诊疗效果的敏感参考指标,ECMO辅助下TAVI治疗重症AS患者安全有效。      

经导管主动脉瓣膜植入与常规主动脉瓣膜置换手术在多风险因素主动脉瓣狭窄患者中的应用

［摘要］ 目的评价经导管主动脉瓣膜植入（transcatheter aortic valve implantation,TAVI）与常规主动脉瓣膜置换在高风险因素患者中应用的安全性及效果。 方法选择主动脉瓣狭窄患者80例,按手术方式分为常规组47例、小切口组18例和TAVI组15例。常规组采用常规开胸主动脉瓣膜置换手术,小切口组采用胸骨上段小切口主动脉瓣膜置换手术,TAVI组采用全身麻醉非体外循环下TAVI。比较3组患者手术效果及并发症发生情况。 结果小切口组24 h引流量明显少于常规组（P＜0.01）。常规组和小切口组阻断时间差异无统计学意义（P＞0.05）。小切口组手术时间、呼吸机辅助通气时间、重症监护室（intensive care unit,ICU）停留时间短于常规组,术中出血量少于常规组（P＜0.01）;TAVI组手术时间、呼吸机辅助通气时间、ICU停留时间短于常规组和小切口组,术中出血量少于常规组和小切口组,平均动脉压（mean artery pressure,MAP)变化值大于常规组和小切口组,住院费用多于常规组和小切口组（P＜0.05或P＜0.01）。3组并发症发生率差异无统计学意义（P＞0.05）。 结论TAVI手术在治疗高风险因素的患者中较常规主动脉瓣膜置换手术安全性高,创伤小,并发症少,恢复快,值得临床推广应用。     

A Clinicopathological Study on Aortic Valves in Children

In order to investigate the clinicopathological characteristics of aortic valve disease in children, all the native surgically excised aortic valves obtained between January 2003 and December 2005 were studied macroscopically and microscopically. The patients’ medical records were reviewed and the clinical information was extracted. According to preoperative echocardiography, intraopera- tive assessment, and postoperative pathology, combined with clinical symptoms and signs, aortic valve diseases were divided into three categories: aortic stenosis (AS), aortic insufficiency (AI), and aortic stenosis with insufficiency (AS-AI). The etiology was determined according to the macro- scopic, microscopic and clinical findings. The results showed that among 70 aortic valves, patient age ranged from 6 to 18 years, with a mean of 15.4 years, and there were 56 boys and 14 girls (male: fe- male=4:1). Forty-four children only had pure aortic valve disease, and the other 26 children had aor- tic valve disease associated with other heart valve diseases. There were 5 cases of AS (7.14%), 60 cases of AI (85.71%) and 5 cases of AS-AI (7.14%). The causes were congenital aortic valve mal- formation (32 cases, 45.71%), rheumatic disease (28 cases, 40%), infective endocarditis (7 cases, 10%), Marfan syndrome (2 cases, 2.86%), and undetermined (1 case, 1.43%). It was concluded that the common causes of aortic valve disease in order of frequency in children were congenital aortic valve malformation, rheumatic disease, infective endocarditis, and Marfan syndrome. AI was more common in children with aortic valve disease. Compared with adult patients, congenital bicuspid aor- tic valve in children was often AI. Histologically, the leaflets of congenital bicuspid aortic valve were mainly myxomatous, fibrosis and calcification less seen. AI was frequently found in rheumatic dis- ease, mostly associated with other heart valve diseases. Macroscopic and microscopic examinations together with clinical information, echocardiographic findings and operative details were important in evaluating the etiology of aortic valve disease.     

2D-STI评价亚临床型重度主动脉瓣狭窄病人 左心室功能及相关性研究

目的应用二维斑点追踪（2D-STI）技术定量评价保留左心室射血分数（LVEF）的重度主动脉瓣狭窄（AS）病人左心室功能及相关性。方法选择35例重度AS并保留LVEF ≥ 50%且无其他心脏疾病的病人,同时入选25名性别年龄相匹配的健康志愿者。常规超声心动图双平面Simpsin法测量LVEF;左心室长轴切面M型超声测量室间隔（IVS）、左心室后壁（LVPW）厚度、左心室舒张末期内径（LVEDD）和收缩末期内径（LVESD）;连续多普勒测量主动脉瓣口射流速度及平均跨瓣压差（MPG）,连续方程法测量主动脉瓣瓣口面积（AVA）;2D-STI技术获取左心室整体纵向应变（LVGLS）、整体环向应变（LVGCS）;同时测量了评价心室损伤的指标能量损失指数（ELI）。结果2组LVEDD、LVESD、LVEF差异均无统计学意义（P>0.05）。AS组病人的IVS和LVPW厚度与对照组相比更厚（P < 0.05和P < 0.01）,主动脉瓣最大MPG及平均MPG显著高于对照组（P < 0.01）;AS组LVGLS和LVGCS均显著低于对照组（P < 0.01）。ELI与LVGLS呈显著正相关关系（P < 0.01）;LVGLS与AVA呈正相关关系（P < 0.01）。结论严重AS的病人尽管保留有正常LVEF,但左心室收缩功能已经受损,2D-STI技术可以早期检测重度AS病人亚临床型左心室功能障碍,为AS病人得到及时干预提供依据。