The Effects of Systole on Left Ventricular Blood Flow
Coronary artery flow is complex. Flow in this system is divided into systolic and diastolic. However, systolic flow should be divided into two phases, isovolumetric and the ejection phase, since these two components are determined by completely different parameters. Flow through the myocardium is affected by the close mechanical coupling between myocytes and capillaries effected by the array of collagen struts and their disposition. This latter provides the anatomic arrangement that makes possible the integrated “massaging” effect postulated by Wiggers (26).
KeywordsMyocardial Blood Flow Coronary Flow Ventricular Pressure Wall Tension Stereo Pair
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- 3.Abel, F. L., Borg, T. K., and Caulfield, J. B. 1980. The effects of left ventricular systole on coronary blood flow. In: 28th International Congress of Physiological Sciences, Budapest, July, 1980, p. 289. Hungarian Physiological Society, Budapest.Google Scholar
- 4.Abel, F. L., and McCutcheon, E. P. 1979. Cardiovascular Function: Principles and Applications, pp. 396–408. Little, Brown, Boston.Google Scholar
- 5.Anrep, G. V. 1945. Quoted in: C. H. Best and N. B. Taylor (eds.), The Physiological Basis of Medical Practice, 4th ed., p. 278. Williams & Wilkins, Baltimore.Google Scholar
- 8.Charm, S. E., and Kurland, G. S. 1974. Blood Flow and Microcirculation, pp. 138–139. John Wiley & Sons, New York.Google Scholar
- 9.Coulson, R. L., Grayson, J., and Irvin, M. 1970. Observations on the coronary collateral communications and the control of flow in the coronary circulation in dogs. J. Physiol. (Lond.) 208:563–581.Google Scholar
- 12.Feigl, E. O. 1966. I. Mechanical force measurement in biology. In: R. F. Rushmer, (ed.), Methods in Medical Research, Vol. 11, pp. 122–136. Year Book Medical Publishers, Chicago.Google Scholar
- 16.Kittleson, M. D., Hamilin, R. L., Levesque, M. J., and Muir, W. W. III. 1980. Transmural myocardial blood flow and pressure in systole and in diastole in the horse. Fed. Proc. 39:1107.Google Scholar
- 21.Shkhvatsabaya, I. K. 1979. Ischemic Heart Disease. translated by U. N. Bobrov and G. S. Vats, pp. 24–26. C. V. Mosy, St. Louis.Google Scholar
- 24.Tillmans, H., Leinberger, H., Thederon, H., Steinhausen, M., and Kubler, W. 1981. Pressure-velocity-diameter relations in the microvessels of the heart. In: P. Gaehtgens (ed.), Abstracts of XI European Conference for Microcirculation, Bibliotheca Anatomica No. 20, pp. 484–489, S. Karger, Basel.Google Scholar
- 25.Vatner, S., Manders, T., and Baig, H. 1979. Correlation between ischemia induced reductions in regional myocardial blood flow and function in conscious dogs. Circulation 60(Suppl. II):29.Google Scholar