Honda T, Okayama H, Tamura A, Kodama K, Suetsugu M, Doiuchi J, Hamada N, Nomoto R, Akamatsu A, Joh T
Department of Internal Medicine, Ehime Prefectural Central Hospital, Japan.
Jpn Circ J. 1991 Oct;55(10):966-71. doi: 10.1253/jcj.55.966.
Interventricular septal involvement in myocardial infarction is usually associated with infarction of the left ventricular anterior free wall, as the obstruction is at the major portion of the left anterior descending coronary artery. Acute myocardial infarction with obstruction only of the first septal branch is rare. We describe here a case of pure septal infarction. The case was diagnosed by emergency coronary arteriogram (CAG). Although the patient had a large first septal branch, his global left ventricular function was preserved. Abnormal findings were localized in only septal region as determined by left ventriculography (LVG), two-dimensional echocardiography (2DE), and 99mtechnetium pyrophosphate (99m Tc-PYP) and 201thallium (201Tl) myocardial scintigraphy.
心肌梗死时室间隔受累通常与左心室前游离壁梗死相关，因为梗阻位于左前降支冠状动脉的主要部分。仅第一间隔支发生梗阻的急性心肌梗死很少见。我们在此描述一例单纯性室间隔梗死病例。该病例通过急诊冠状动脉造影（CAG）确诊。尽管患者有粗大的第一间隔支，但其左心室整体功能得以保留。通过左心室造影（LVG）、二维超声心动图（2DE）以及99m锝焦磷酸盐（99m Tc-PYP）和铊201（201Tl）心肌闪烁显像检查发现，异常仅局限于室间隔区域。
