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  • Title: Simultaneous measurement of cardiac output and its distribution with microspheres in the rat.
    Author: McDevitt DG, Nies AS.
    Journal: Cardiovasc Res; 1976 Jul; 10(4):494-8. PubMed ID: 947337.
    Abstract:
    The radioactive microsphere method was used to estimate simultaneoulsy the cardiac output and its distribution in the same rat by the use of an arterial reference sample obtained during microsphere distribution. Sufficient microspheres were injected so that all counted samples contained more than 400 spheres. No haemodynamic changes occurred during microsphere injection. The results for cardiac output of 253 +/- 11 ml/min per kg body weight agree with published estimates utilizing other techniques. The distribution of cardiac output also agrees with most published reports. This method should allow the rat to be conveniently used for certain haemodynamic studies when cardiac output and organ blood flow are necessary.
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