经皮腔内冠状动脉室间隔化学消融术治疗梗阻性肥厚型心肌病的近期疗效观察

目的评价经皮腔内冠状动脉室间隔化学消融术治疗梗阻性肥厚型心肌病的近期疗效。方法选择梗阻性肥厚型心肌病患者29例,利用Sigwart法行经皮腔内冠状动脉室间隔化学消融术,99%无水酒精注入间隔支,并记录注入前后即刻左心室流出道压力阶差和心电图的变化。在消融术前及术后30天通过超声心动图测量室间隔厚度及左心室舒张末直径。结果间隔支内平均酒精注射量为2.97 mL;术后即刻左心室流出道压力阶差平均下降到36.0±9.3 mmHg;术后30天室间隔厚度降低3.2±0.3 mm;2例需要再次另外一支间隔支消蚀;3例患者术中出现一过性完全性房室传导阻滞;所有患者临床症状都有不同程度的缓解。结论经皮腔内冠状动脉室间隔化学消融术能显著降低左心室流出道压力阶差,治疗梗阻性肥厚型心肌病的近期疗效可靠,但应该严格控制适应症,以减少严重并发症发生。     

肥厚梗阻型心肌病化学消融术中、术后严重并发症及防治

目的 :报告经皮室间隔心肌化学消融术治疗肥厚梗阻型心肌病术中、术后出现的严重并发症 ,探讨其原因和机制 ,总结经验、教训 ,以期减少其发生。方法 :2 0例肥厚梗阻型心肌病患者用Sigwart法行化学消融术 ,观察术中、术后出现的严重并发症。结果 :2 0例患者中合并下壁急性心肌梗死 2例 ,前壁心肌梗死 1例 ;术后心室颤动 1例 ;永久性Ⅲ度房室传导阻滞 1例 ;术后严重血流动力学障碍 1例 ;术中左冠状动脉回旋支栓塞 1例。结论 :肥厚梗阻型心肌病化学消融术中及术后可发生多种严重并发症 ,明确靶血管与消融心肌之间的关系、选择恰当的一支或多支间隔支动脉行化学消融 ,是减少并发症的关键     

经皮导管室间隔心肌化学消融术治疗肥厚型梗阻性心肌病的近期疗效

目的:探讨经皮导管室间隔心肌化学消融术(PTSMA)治疗肥厚型梗阻性心肌病(HOCM)方法及近期疗效。方法:11例HOCM患者,经心脏超声及导管测压证实存在左室流出道压力阶差(LVOTG),选择靶间隔支注入无水乙醇消融后记录LVOTG变化,出院时及出院后1个月复查超声心动图。结果:11例患者中消融第1间隔支者9例,消融第2间隔支者1例,同时消融第1、第2间隔支者1例;术后即刻导管测量LVOTG较术前明显下降[(90.40±41.95)∶(52.90±34.12)mmHg(1 mmHg=0.133 kPa),P<0.01]。11例中1例术后4 h死亡,1例术后第5天置入永久双腔起搏器,其余9例度过围术期并出院随访。10例存活者出院时与术前相比,LVOTG和二尖瓣收缩期前移(SAM)幅度较术前明显改善[(44.56±28.87)∶(82.98±36.46)mmHg,(2.3±1.06)∶(4.1±1.37)mm,P<0.01)];术后1个月超声测量LVOTG、室间隔厚度、左室流出道内径和SAM幅度分别为:(40.43±19.27)mmHg、(18.6.1±1.17)mm、(15.5±1.08)mm和(0.5±0....     

经皮室间隔化学消融治疗肥厚型梗阻性心肌病疗效观察

<正>肥厚型梗阻性心肌病(hypertrophic obstructive car-diomyopathy,HOCM)是原发性心肌病的一种特殊类型,约占肥厚型心肌病患者的25%[1]。临床治疗的目的是使流出道变宽,狭窄减轻,从而达到缓解流出道梗阻,减轻症状,降低猝死率。目前治疗的方法有     

Successful coronary stenting of the left anterior descending artery at the branching site of the targeted septal perforator immediately after percutaneous transluminal septal myocardial ablation in hypertrophic obstructive cardiomyopathy

We report a case of simultaneous percutaneous treatment of hypertrophic obstructive cardiomyopathy (HOCM) and coronary artery disease. Cardiac catheterization revealed a left ventricular outflow tract pressure gradient (LVOTPG) of 130 mmHg and a significant left anterior descending artery (LAD) stenosis at the site of the 1st major septal branch. The LVOTPG was eliminated by injection of ethanol into the branch. Subsequently, a coronary stent was implanted in the LAD. A coil stent was selected due to possibility of repeat septal ablation in the future. Simultaneous treatment of HOCM and LAD stenosis is considered safe and effective using a coil stent.     

经皮经冠状动脉室间隔化学消融术治疗梗阻性肥厚型心肌病的近期疗效观察

目的评价经皮经冠状动脉室间隔化学消融术（PTSMA）治疗梗阻性肥厚型心肌病（HOCM）的近期疗效。方法自1998年8月～1999年11月收治HOCM34例,入选行PTSMA26例。利用Sigwart法行PTSMA,注入96%～99%无水酒精消融间隔支前后记录左室流出道压力阶差变化、心电图变化。在消融前及术后2周通过超声心动图测量室间隔（IVS）厚度及左室流出道宽度。结果术前平均静息左室流出道压力阶差为（72.8±24.6）mmHg（1mmHg=0.133kPa）,术中球囊加压后为（30.6±18.5）mmHg,术后为（24.3±17.6）mmHg,差异有显著性（P<0.001）。术前室间隔平均厚度为（23.00±6.03）mm,术后2周为（20.55±5.38）mm。术前左室流出道宽度为（6.54±2.36）mm,术后2周为（11.36±3.37）mm（P<0.01）。术前心功能（NYHA分级）为3.4±0.6,术后2周为1.6±0.8。术后CPK与CPK-Mb峰值分别为（1050±514）U/L与（131±78）U/L。术中及术后可见短阵室速、结性逸搏心律、三度房室传导阻滞及束支传导阻滞。1例发生永久性三度房室传导阻滞,安装永久性双腔起搏器。出现下壁及前壁心肌梗死心电图表现者各1例。结论PTSMA能显著降低左室流出道压力阶差,治疗HOCM的近期疗效可靠,但尚需进一步完善方法,以减少严重并发症发生,并需继续随访其中、远期疗效。     

Percutaneous transluminal septal myocardial ablation for hypertrophic obstructive cardiomyopathy.

Percutaneous transluminal septal myocardial ablation (PTSMA) is a new therapeutic option for patients with hypertrophic obstructive cardiomyopathy (HOCM). In the present study, the acute and follow-up results of PTSMA were evaluated. From August 1997 to March 2003 27 medically refractory patients (New York Heart Association (NYHA) functional class 2.9+/-0.6) with HOCM underwent PTSMA. The target septal branch was determined by probationary ballooning in 3 and by myocardial contrast echocardiography in 24 patients. The mean resting left ventricular outflow tract pressure gradient (PG) was reduced from 70+/-44 to 24+/-22 mmHg (p<0.0001); the peak concentration of creatine kinase was 1545+/-686 IU/L. Although transient trifascicular block was observed in 14 patients, permanent pacemaker implantation was not required. There were no major adverse cardiac events during the hospital stay; the mean clinical follow-up was 2.2+/-1.7 years. Repeated PTSMA was needed in 1 patient; however, symptomatic improvement had been well preserved in all patients (NYHA class 1.2+/-0.4). Follow-up echocardiographic examination showed sustained improvement in PG, septal and left ventricular posterior wall thicknesses, and the grade of systolic anterior movement and regurgitation of the mitral valve. In conclusion, PTSMA is a safe and effective therapeutic option for medically refractory patients with HOCM.     

70岁以上肥厚性梗阻型心肌病患者化学消融的安全性初探

目的:总结70岁以上肥厚性梗阻型心肌病(HOCM)患者行经皮室间隔心肌化学消融术(PTSMA)治疗的并发症发生情况及近期疗效,探讨70岁以上HOCM患者行PTSMA的利与弊。方法:对1998-07至2010-07我院行PTSMA治疗的9例70岁以上HOCM患者的临床资料和化学消融结果进行回顾性分析,总结其化学消融术中和术后围术期并发症的发生情况及近期疗效。结果:9例70岁以上HOCM患者中共8例接受PTSMA治疗,术后静息及早搏后左心室流出道压力阶差明显降低(13.29±16.60 vs 77.71±45.51,P=0.006;42.25±21.98 vs 113.50±38.46,P=0.04),左心室射血分数较术前略有下降,但差异无统计学意义(0.60±0.05 vs 0.62±0.05,P=0.053)。术中发生完全性右束支传导阻滞3例,Ⅲ度房室传导阻滞1例,急性心包填塞、死亡1例,急性左心衰竭、死亡1例。结论:70岁以上HOCM患者行PTSMA治疗是有效的,但围术期并发症发生率较高,死亡率较高,因此70岁以上HOCM患者行PTSMA弊大于利,应谨慎施行。     

肥厚型梗阻性心肌病化学消融术后中长期疗效观察

目的评价经皮经腔间隔心肌化学消融术(PTSMA)治疗肥厚型梗阻性心肌病(HOCM)的中-长期疗效。方法选择2000年11月~2004年8月共11例HOCM的患者,成功地接受了PTSMA治疗,术后超声随访12~48个月以上,随访观察患者的室间隔厚度(IVS)、左心室流出道宽度(LVOT)、无创性左心室流出道压力阶差(LVOTPG)、心功能变化。结果11例患者均成功地实施了PTSMA,术后IVS、LVOTPG和NYHA较术前有显著改善,P<0.000 1,术后随访示IVS术后12个月、48个月较术后1周显著改善,P<0.05。结论PTSMA能显著降低室间隔厚度,改善心功能且稳定,中长期疗效肯定,随术后观察时间的延长疗效有进一步增加的趋势。     

经皮室间隔化学消融术对梗阻性肥厚型心肌病二尖瓣反流的影响

目的 评价经皮室间隔化学？肖融术对梗阻性肥厚型心肌病二尖瓣反流的影响。方法选择2007年3月至2012年2月在广东省人民医院诊断为梗阻性肥厚型心肌病的患者41例为研究对象,年龄（51．1±2．2）岁,其中男20例,女21例。利用Sigward法行经皮室间隔化学消融术,浓度99％的无水酒精注入冠状动脉间隔支内,记录术前、术后左心室流出道压力阶差的变化,消融术前及术后第一天通过超声心动图测量左心室流出道压差及二尖瓣反流面积变化。结果导管法术前、术后左心室流出道压力阶差分别为（101．9±33．9）mmHg（1mmHg=0．133kPa）和（54．3±34．7）mmHg,两者比较差异有统计学意义（P〈0．01）。术前、术后二尖瓣反流面积分别为（7．2±2．1）cm。和（4．0±3．0）m2,两者比较差异有统计学意义（P〈0．01）。线性柏关回归分析显示,术前、术后二尖瓣反流面积的变化与左心室流出道压力阶差变化相关（r=0．589,P〈0．01）。结论经皮室间隔化学消融术可以降低梗阻性肥厚型心肌病患者左心室流出道压力阶差,使二尖瓣收缩期前向运动减轻,二尖瓣反流减少：二尖瓣反流的减少可以作为评价经皮冠状动脉室间隔化学消融术疗效的指标之一。     

经皮室间隔心肌化学消融治疗肥厚梗阻性心肌病16例观察

目的探讨经皮室间隔心肌化学消融（胛SMA）方法治疗肥厚性心肌病（HOCM）的疗效。方法16例肥厚型梗阻性心肌病患者,男性12例,女性4例,平均年龄（35．8＋11,O）岁;均在术前接受过13受体阻滞剂和（或）钙拮抗剂治疗效果不佳。确定靶血管后,向球囊导管中心腔内注入无水乙醇,同时密切观察患者的心电图及LVOTG的变化。所有患者术后均复查超声心动图,随访观察6个月。结果16例患者中13例消融第一间隔支,3例消融第二间隔支,2例同时消融第一、二间隔支。无严重并发症（高度房室传导阻滞）发生。术后2例心脏杂音完全消失,9例心脏杂音减轻1～2级。术后超声心动图均提示原先肥厚的室间隔心肌变薄,搏动减弱,LVOTG下降,SAM现象消失。结论PTSMA是通过PTCA技术经导管向供应肥厚室间隔心肌的间隔支动脉内注入无水乙醇引起局灶性心肌梗死以达到缓解左室流出道梗阻的一种新技术,是一种治疗HOCM的有效方法。     

Intracardiac echocardiography guidance during percutaneous transluminal septal myocardial ablation in patients with obstructive hypertrophic cardiomyopathy

BACKGROUND: Percutaneous transluminal septal myocardial ablation (PTSMA) recently emerged as an alternative to myectomy for hypertrophic obstructive cardiomyopathy (HOCM) patients with drug‐refractory symptoms. The target septal branch selection is a main point to achieve the therapeutic result. METHODS AND RESULTS: We report about PTSMA performed using intracardiac echocardiography (ICE) to guide the procedure in 9 symptomatic HOCM patients. The target septal branch was chosen on the basis of the risk‐area visualized using ICE after injection of a contrast agent. During alcohol administration a backscattered signal enhancement of the infarcted area was detected. The procedures were uncomplicated and effective to reduce the gradient from 78.9±20.4?mmHg to 7.8±7.9?mmHg (p<0.0001). CONCLUSIONS: In this initial experience ICE monitoring during PTSMA was safe and provided high quality and continuous imaging of the treated segment of the septum during the whole procedure.     

梗阻性肥厚型心肌病室间隔心肌消融术后心电图变化

目的 :探讨梗阻性肥厚型心肌病经皮腔内室间隔消融术后心电图变化及临床意义。方法 :5例梗阻性肥厚型心肌病患者完成经皮腔内室间隔消融术 ,观察并比较术后不同时间记录的心电图和动态心电图。结果 :5例患者术中和术后均发生右束支传导阻滞 ;术中 3例出现一过性Ⅲ度房室传导阻滞 ,其中 1例发生心室颤动 ,1例出现频发室性期前收缩 ,1例出现Ⅰ度房室传导阻滞 ;术后未见新发Q波 ,QRS时限、QT和QTc间期明显延长 ,Sv1+Rv5显著降低 ,动态心电图随访未见室性心律失常增加。结论 :经皮腔内室间隔消融术致心律失常的发生率较高 ,但常为一过性。 12导联心电图和动态心电图监测是最为实用的诊断手段     

经皮室间隔化学消融术治疗肥厚梗阻型心肌病

目的评价室间隔化学消融术治疗肥厚梗阻型心肌病在急性期的效果。方法对52例确诊肥厚梗阻型心肌病患者进行经皮室间隔化学消融术治疗,并于术前、术后急性期进行超声心动观察。结果41例患者介入治疗成功,成功率为78.8%。术前超声观察室间隔平均厚度(22.96±5.15)mm,左室流出道压力阶差(LVOTPG)(92.64±38.69)mm Hg(1mm Hg=0.133kPa),术后急性期(4.8±3.2)d,室间隔平均厚度(21.27±4.64)mm,较术前比变薄,P<0.05;LVOTPG(51.79±38.99)mm Hg,较术前明显降低,P<0.001。结论经皮室间隔化学消融术治疗肥厚梗阻型心肌病,在急性期可使室间隔平均厚度降低,收缩期左室流出道压力阶差显著下降。     

超声心动图在肥厚型梗阻性心肌病中的应用

目的评价超声心动图在肥厚型梗阻性心肌病(HOCM)患者经皮室间隔化学消融术(PTSMA)治疗中的应用价值.方法应用超声心动图筛选HOCM患者17例,介入治疗术中引导及监测PTSMA,术后随访.结果术后即刻导管测量左心室流出道(LVOT)压差较术前减低,差异有统计学意义(P＜0.01).术后4周经胸超声心动图检查,LVOT压差、室间隔厚度和左心室射血分数均较术前明显减低,LVOT宽度均较术前明显增加,均差异有统计学意义(均P＜0.01).术前及术后超声心动图与导管测压所得参数具有良好的相关性(r=0.78;r=0.82,均P＜0.01).结论超声心动图技术可用于指导和监测HOCM患者的PTSMA治疗.     

Papillary muscles identified by myocardial contrast echocardiography in preparation for percutaneous transluminal septal myocardial ablation

In patients with hypertrophic obstructive cardiomyopathy (HOCM), percutaneous transluminal septal myocardial ablation (PTSMA) supplemented by myocardial contrast echocardiography (MCE) can provide a therapeutic benefit. We report a 33-year-old woman with HOCM in which MCE revealed a septal branch artery supplying the postero-medial papillary muscles. Thus, PTSMA was aborted because of the risk of acute mitral regurgitation secondary to papillary muscle dysfunction.     

Guiding of Percutaneous Transcoronary Septal Myocardial Ablation in Hypertrophic Obstructive Cardiomyopathy by Myocardial Contrast Echocardiography:

Percutaneous transluminal septal myocardial ablation (PTSMA) by alcohol injection into septal branches (SB) of the left coronary artery has evolved as a promising therapeutic option for selected patients with obstructive hypertrophic cardiomyopathy (HOCM). Originally, probatory balloon occlusion of the target vessel was considered to be predictive for definitive reduction of left ventricular outflow gradients (LVOTG). The need for additional information regarding the exact site and extension of the therapeutic septal infarction is demonstrated by a case report. In this patient, myocardial contrast echocardiography (MCE) was performed prior to alcohol injection and showed that the septal area corresponding to LVOTG formation was supplied by a SB originating atypically from an intermediate branch. PTSMA guided by MCE led to complete LVOTG elimination without sustained rhythm disturbances and with a minimum CK rise.     

Early remodelling of left ventricle and improvement of myocardial performance in patients after percutaneous transluminal septal myocardial ablation for hypertrophic obstructive cardiomyopathy

BACKGROUND: Percutaneous transluminal septal myocardial ablation (PTSMA) reduces left ventricular outflow (LVOT) gradient in patients with hypertrophic obstructive cardiomyopathy (HOCM) and leads to symptomatic improvement. Effects of PTSMA on left ventricular performance are currently unknown. The purpose of this study was to evaluate changes in the left ventricular performance using Doppler index of myocardial performance (sum of isovolumic contractile and relaxation times divided by left ventricular ejection time) and left ventricular remodelling after PTSMA for HOCM. METHODS: Twenty-five patients with symptomatic HOCM underwent echocardiography-guided PTSMA procedure. Clinical and echocardiographic data were collected at baseline and 3 months after PTSMA. RESULTS: PTSMA procedures were uneventful, in one patient (4%), pacemaker implantation was needed for sustained complete heart block after the procedure. At 3-month follow-up, the maximal LVOT gradient decreased from 68+/-39 to 18.6+/-12 mmHg (P<0.001), the provoked maximal LVOT gradient decreased from 128.8+/-59 to 25+/-21.4 mmHg (P<0.001), and basal septal thickness decreased from 21.7+/-4 to 15.2+/-3 mm (P<0.001). The improvement of the index of myocardial performance (from 0.65+/-7 to 0.56+/-11; P<0.001) was associated with neither significant change in left ventricular ejection fraction nor left ventricular ejection time. There was no significant difference in the left ventricular dimension at baseline and at follow-up. All patients reported a significant improvement in symptoms at follow-up, the mean NYHA class decreased from 2.6+/-0.7 to 1.4+/-0.7 (P<0.001), and the number of patients suffering from episodes of syncope or attacks of dizziness decreased from 13 to two during the 3-month follow-up. CONCLUSIONS: PTSMA is a safe, effective and reproducible method in the treatment of highly symptomatic patients with HOCM. This procedure results in a significant relief of symptoms associated with decrease in LVOT gradient and thickness of basal interventricular septum. Positive changes in Doppler IMP suggest possible improvement of left ventricular function.     

心肌声学造影指导化学消融治疗肥厚梗阻型心肌病疗效观察

目的 探讨心肌声学造影（MCE）引导乙醇化学消融治疗肥厚梗阻型心肌病（HOCM）的临床疗效和短期预后。方法 22例肥厚梗阻型心肌病患者,术前根据超声确定梗阻相关心肌（靶域）。术中行冠脉造影,根据间隔支发出部位拟定消融血管,进一步行MCE确定消融血管（靶血管）,然后注入无水乙醇行经皮室间隔化学消融术（PTSMA）治疗。术后1个月、3个月及1年监测患者超声指标、脑钠尿肽( BNP)及临床症状。结果 22例患者中,19例(86%)MCE术中心肌显影部位与术前靶域相吻合,直接行PTSMA治疗;2例(9%)MCE显示心肌显影区域小于靶域,更换靶血管后行PTSMA治疗;1例(5%)MCE显示非靶域显影而放弃消融治疗。21例(95%)患者术后即刻静息左室流出道压差(LVOTPG)下降达50%以上。随访发现室间隔厚度(IVST)、LVOTPG显著低于术前（P<0.05）;术后1个月二尖瓣前叶收缩期前向运动(SAM)分级、二尖瓣反流(MR)分级也较术前明显减轻（P<0.05）。BNP由术前的(586±127) ng/L降至(202±113) ng/L（P<0.05）。患者术后1年心功能分级为1.8±0.6,较术前3.5±0.5明显改善（P<0.05 ）。结论 在MCE引导下实施PTSMA,可精确选择靶血管并对靶域进行定位、定量消融,显著降低IVST和LVOTPG,改善患者症状,具有良好疗效。     

Alcohol septal ablation through a bare metal stent after rotative atherectomy: a complex procedure

We report the case of a patient with severe malignant hypertrophic obstructive cardiomyopathy (HOCM) and calcified stenosis of the proximal and middle left anterior descending (LAD) coronary artery. We elected to treat his ischemic heart disease first. We performed angioplasty of the proximal and middle LAD, after rotative atherectomy, and implanted two bare metal stents. Thirty days later we treated his HOCM by alcohol septal ablation with catheterization of the first septal branch through the mesh of the bare metal stent implanted in the LAD. To our knowledge, this is the first documented report of such a procedure.