Analysis of tolerance to physical load and blood lipid composition in 28 patients with the first clinical symptoms of coronary insufficiency and in 93 patients with cardialgia showed that diminished load tolerance with impaired induces of lipid metabolism is encountered more frequently (77.5%) than isolated hyperlipoproteinemia (15.2%) and low load tolerance without hyperlipoproteinemia (7.3%). In patients with low tolerance to load and hyperlipoproteinemia, the decrease of the threshold power and volume of work corresponds to the degree of disturbances in the blood lipid composition. The combination of cardialgia, hyperlipoproteinemia, and low load tolerance, manifested by tachycardia, may indicate that this is a case with ischemic heart disease.
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