[Structural and functional characteristics of myocardial capillaries after resection of the lungs]

In the experiment performed on 107 dogs, after resection of 33-75% of the pulmonary volume, it has been stated that considerable disturbances take place in the myocardial microcirculatory bed. At early stage after the operation the amount of capillaries per 1 mm2 of the section increases, their lumens become wide. With elapse of time after the operation, as a result of myocardial hypertrophy, density in arrangement of the capillaries decreases, and the transversal section area of the cardiomyocyte per one capillary increases. In the capillary walls destructive changes are also noted; they result in myocardiodistrophy and in development of cardiac failure.