Abstract
A model was developed which allows the dilatation of iliac cadaver arteries under normal blood pressure conditions (mean pressure 100 mmHg). Segments of the iliac artery were put under pressure and dilated with balloons under similar conditions as in clinical practice. Purposely oversized balloons were used because most of the arteries did not contain severely stenotic plaques and consequently the commercially available balloons had no effect because of their comparatively small diameter. In spite of the use of oversized balloons, the cadaver arteries could not be significant dilated. Rupture of the intima and media was almost invariably present. Leakage of distending fluid through the adventitia occurred commonly. The "therapeutic range" between minimal dilation and partial or total rupture in postmortem studies is small.
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