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Clinical significance of myocardial squeezing of the coronary artery.
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- HASHIMOTO Akihisa
- the Department of Cardiovascular Medicine, Kanazawa Medical University
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- TAKEKOSHI Noboru
- the Department of Cardiovascular Medicine, Kanazawa Medical University
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- MURAKAMI Eiji
- the Department of Cardiovascular Medicine, Kanazawa Medical University
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Description
We investigated the coronary angiography (CAG) of 1, 022 patients to clarify the clinical significance of myocardial squeezing and obtained the following results. <BR>1) Of 1, 022 patients undergoing CAG, 164 patients (16.0%) had myocardial squeezing of the left anterior descending artery (LAD) and 16 patients (1.6%) had only the first septal perforating branches producing a squeezing of the artery during systole. The association of myocardial squeezing of the LAD with different diagnosis was anterior chest pain syndrome (26.6%), arrhythmia (23.6%), cardiomyopathy (21.7%), angina pectoris (15.8%) and myocardial infarction (6.9%). <BR>2) The degree of narrowing of the LAD was classified into 4 grades; 25-49%: 36 patients (22.0%), 50-74%: 82 patients (50.0%), 75-89%: 35 patients (21.3%) and greater than 90%: 11 patients (6.7%). <BR>3) The morphology of the vessel subjected to myocardial squeezing was classified into 4 patterns on CAG. Type A is localized narrowing. Type B is bead-like narrowing. Type C is diffuse narrowing. Type D is tapering and obstructive narrowing. All type D patients had the septal perforating branches. <BR>4) We investigated whether only myocardial squeezing has ischemic ST-T segment changes in the ECG. Fifty-five of 87 patients (63.2%) with myocardial squeezing of greater than 75% and organic stenosis of less than 50% of the LAD had ischemic changes in the ECG during exercise or pacing-induced tachycardia. <BR>5) There was no special feature between myocardial squeezing and subjective symptoms.
Journal
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- Japanese Heart Journal
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Japanese Heart Journal 25 (6), 913-922, 1984
International Heart Journal Association
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Keywords
Details 詳細情報について
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- CRID
- 1390282680014745088
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- NII Article ID
- 130000764416
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- ISSN
- 1348673X
- 00214868
- http://id.crossref.org/issn/00214868
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- PubMed
- 6530751
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- JaLC
- Crossref
- PubMed
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed