[Coronary artery reserve in patients with hyperlipoproteinemias (author's transl)].

The coronary reserve was measured in 119 patients with different types of primary hyperlipoproteinemia. Cardiovascular diseased with clinical manifestation were excluded. 90 patients of same age with normal serum lipids served as controls. The groups did not differ in other risk factors as blood pressure or overweight (the latter excluded in hyperlipoproteinemia type IV). The controls showed decreased coronary reserve in 8%, type IIa patients in 36%, IIb patients in 18% and type IV patients in 23%. The frequency of restriction in coronary flow increased with age: in hyperlipoproteinemic patients of 50 years and more it was found in nearly 40%. Further interesting results were the significantly higher systolic and diastolic blood pressures reached during exercise in our hyperlipoproteinemic patients.