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  • Abstract
  • Look Inside

Primary coronary artery dissection occuring as a spontaneous event and not associated with trauma due to catheter manipulation is rare. We recently experienced (a case of) a 52-year-old man with pri-mary artery dissection. He was admitted to our hospital with severe chest pain as his chief com-plaint on September 6, 1988. Electrocardiography and laboratory data showed acute inferior myo-cardial infarction. He was treated with medication and underwent coronary angiograms on October 3, 1988. Right coronary angiogram revealed an intimal flap and false lumen. But right coronary angio-grams 6 months after the onset of myocardial in-farction revealed progression of stenosis but no intimal flap, and coronary spasm was not evoked after acetylcholine administration.

Primary coronary artery dissection has been re-ported since Pretty's first description of it in 1931. The majority of earlier cases were diagnosed at autopsy, but recently reports of survivors have been increasing due to the progress in and popular-ization of coronary angiographic technics. This case is the 46th case of primary coronary dissection found by coronary angiography. So it is not extremely rare.

In our case the involved artery was the right coronary artery. In survivors, right coronary artery dissection is more frequent than left, because the area supplied by the right coronary artery is smal-ler than the area supplied by the left one.

Although in our case coronary artery stenosis progressed, after a long term resolution of dissec-tion may occur. There are a few cases in which resolution of dissection occurred naturally.

There is no established treatment of primary coronary artery dissection, but, as a rule, this also applies to the treatment of other ischemic heart diseases.


Copyright © 1990, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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