Submitral left ventricular aneurysm compressing the left main coronary artery

This report describes a 43-yr-old black woman who was referred for evaluation of severe mitral regurgitation. Conventional echocardiography revealed a large submitral left ventricular aneurysm. A selective coronary angiography demonstrated compression of the left main coronary artery by submitral aneurysm. Successful surgical repair was performed. Cathet. Cardiovasc. Diagn. 40:173–175, 1997. © 1997 Wiley-Liss, Inc.     

Occlusion of the left main coronary artery secondary to left ventricular angioma.

Our experience with a patient who had an angioma of the anterior wall of the left ventricle that produced complete occlusion of the left main coronary artery is presented. Diagnosis was made before surgery from findings on cineangiographic studies. Successful surgical treatment consisted of a double aortocoronary bypass to the left anterior descending and obtuse marginal coronary arteries. The angioma was left undisturbed.     

An anomalous left main coronary artery with coronary torsion originating from the right sinus Valsalva

A 52-year old woman developed inferior ST elevation myocardial infarction and was found to have both an anomalous left coronary artery originating from the right sinus of Valsalva, and total atherosclerotic occlusion of the proximal right coronary artery. Coronary angiography showed the torsion of left main coronary artery. Multislice computed tomography was used to assess the left main coronary artery.     

An unusual coronary trinity: single left coronary artery with the right coronary artery originating from the left main coronary artery and following a retro-aortic course

All three coronary arteries originating from a single coronary ostium is a rarity. Single coronary artery (CA) arising from the left aortic sinus is far more uncommon than one arising from the right sinus. Usually in such cases, the right coronary artery (RCA) arises as a distal continuation of the left circumflex artery. We describe an extremely uncommon anatomic variant, where the RCA arose from the single undivided CA as a branch of the left main coronary artery and followed a retro-aortic course before reaching its designated anatomic territory.     

Acute occlusion of left main coronary artery without ventricular damage

We report a patient with acute occlusion of left main coronary artery with only a small increase of cardiac enzymes but without electrocardiographic signs of acute myocardial infarction. Normal global and regional left ventricular function could be documented angiographically. Damage of myocardium was prevented by extensive collateral circulation from a large dominant right coronary artery.     

Stenting to reverse left ventricular ischemia due to left main coronary artery compression in primary pulmonary hypertension

Angina is a common symptom of severe pulmonary hypertension. Although many theories for the source of this pain have been proposed, right ventricular ischemia is the one most commonly accepted as the cause. We report on two patients with primary pulmonary hypertension who had angina with normal activity or on provocation. One patient had severe left ventricular dysfunction. Both were found to have severe ostial stenosis of the left main coronary artery as a result of compression from a dilated pulmonary artery. Both patients underwent stenting of the left main coronary artery with excellent angiographic results, and complete resolution of the signs and symptoms of angina and left ventricular ischemia. Left ventricular ischemia due to compression of the left main coronary artery may be a much more common mechanism of angina and left ventricular dysfunction in patients with pulmonary hypertension than previously acknowledged. Stenting of the coronary artery can be done safely with the resolution of these symptoms.     

起源于主动脉左窦室性早搏的射频消融治疗

目的:探讨导管射频消融治疗起源于主动脉左窦室性早搏(室早)的方法和疗效. 方法:对1 8例起源于主动脉左窦的室早患者行射频消融治疗.采用激动顺序标测,靶点Ⅴ波较体表心电图QRS波群提前30～50 ms,温控大头导管温度65℃～70℃·放电240 S. 结果:靶点位于主动脉左窦左冠状动脉开口下方1～2cm,即刻成功率为100%.术中及术后无并发症发生.术后1个月内,18例患者复查动态心电图均仍见室早.由术前(281 57±1360)次/日降低为术后(856±310)次/日.术后1个月后,除4例器质性心脏病者仍见室早(697±263)次/日,其余患者室早消失.随访3～24个月无复发. 结论:射频消融治疗起源于主动脉左窦的室早安全有效,器质性心脏病者也可以尝试射频消融治疗.     

起源于主动脉左窦室性早搏的射频消融治疗

目的：探讨导管射频消融治疗起源于主动脉左窦室性早搏（室早）的方法和疗效。方法：对18例起源于主动脉左窦的室早患者行射频消融治疗。采用激动顺序标测,靶点V波较体表心电图QRS波群提前30～50ms,温控大头导管温度65℃～70C,放电240S。结果：靶点位于主动脉左窦左冠状动脉开口下方1～2cm,即刻成功率为100％。术中及术后无并发症发生。术后1个月内,18例患者复查动态心电图均仍见室旱,由术前（28157±1360）次／日降低为术后（856±310）次／日。术后1个月后,除4例器质性心脏病者仍见室早（697±263）次／日,其余患者室早消失。随访3～24个月无复发。结论：射频消融治疗起源于主动脉左窦的室早安全有效,器质性心脏病者也可以尝试射频消融治疗。     

Mid left anterior descending coronary artery originating from the right coronary artery

Dual connection of the left anterior descending coronary artery to the left and right coronary arteries is a very rare congenital anomaly. In this report we describe two cases in which the mid-position of the left anterior descending coronary artery is connected to the right coronary artery, one directly and the second by way of the infundibular artery. To the best of our knowledge, connection of the mid-position of the left anterior descending to the infundibular artery has not been previously described.     

起源于左冠状动脉窦及右冠状动脉窦的室性早搏心电图特征分析及射频消融治疗

目的:比较左冠状动脉窦及右冠状动脉窦起源的室性早搏(室早)心电图特征。方法:入选成功行主动脉根部室早消融的患者20例,按消融部位分为左冠状动脉窦室早组(LCC组)15例、右冠状动脉窦室早组(RCC组)5例,比较两组心电图特征。结果:RCC组患者Ⅰ导联均为R波;LCC组患者Ⅰ导联4例为QS波,10例为RS或rs波,1例为R波(χ~2=16.80,P0.01)。与RCC组比较,LCC组患者Ⅲ导联R波振幅增高[(2.01±0.45)mV对(1.45±0.33)mV,P0.05]、aVL导联QS波振幅加深[(1.20±0.24)mV对(0.65±0.21)mV,P0.01]、R波振幅Ⅲ/Ⅱ比值及QS波振幅aVL/aVR比值增大(1.09±0.12对0.80±0.12,P0.001;1.31±0.35对0.60±0.24,P0.001)、Ⅰ导联QRS波时限缩短[(78±32)ms对(120±13)ms,P0.05]、aVL导联QRS波时限延长[(128±14)ms对(100±24)ms,P0.05]。除1例患者因起源点临近左冠状动脉开口而放弃消融外,其余均消融成功。平均随访(13±6)个月,无复发病例及并发症。结论:对于体表心电图提示室早起源于左室流出道的患者,Ⅰ导联R波提示RCC室早,Ⅰ导联RS或rs波提示LCC室早;与RCC室早相比,LCC室早Ⅲ导联R波振幅较高、aVL导联QS波振幅较大、R波振幅Ⅲ/Ⅱ比值及QS波振幅aVL/aVR比值增大。