Contribution of dynamic vascular wall thickening to luminal narrowing during coronary arterial constriction.

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<jats:p>Available estimates of the ratio of wall thickness to luminal radius of human coronary arteries and certain geometrical assumptions were used to calculate the amounts of vascular smooth muscle shortening required to produce specific changes in luminal diameter for hypothetical "normal" and stenotic arteries. The results indicate that even modest mural thickening due to disease may act as a "lever" in translating physiologic degrees of medial smooth muscle shortening into critical luminal obstructions, providing the diseased segment maintains some pliability. The possibility of acute luminal occlusion occurring at stenotic sites as the result of "normal" vasomotion is illustrated. The appropriate use of the term coronary arterial "spasm" is discussed in light of these observations.</jats:p>

収録刊行物

  • Circulation

    Circulation 61 (2), 296-301, 1980-02

    Ovid Technologies (Wolters Kluwer Health)

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