Elderly persons account for more than half of patients in departments of internal medicine in Lodz. The most frequent reason for hospital admission of the elderly is CVD, particularly CHD.

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For an understanding of the effects of myocardial protection via the coronary sinus and other cardiac veins, study of the angioarchitectonic of these veins in ischemic hearts is of special interest. Venous vessels were filled with radiological contrast material (hearts of decreased patients who died from coronary disease and also normal hearts) and were then studied using the microhistoangiographic technique. It was noted that necrotic zones of the histologic preparations were similar to the corresponding microangiograms. It was found that with myocardial infarction in the process of organization, the venous vessels around the necrotic zone appear and infiltrate from the border toward the "vessel-less" space lying in the necrotic center. This points to a participation and to the importance of venous vessels in the renovation of microcirculation in the necrotic zone after myocardial infarction.