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  • Title: The hemodynamics of cardiac tamponade.
    Author: Nakata Y, Takahashi F.
    Journal: Jpn Circ J; 1978 Feb; 42(2):131-7. PubMed ID: 642185.
    Abstract:
    The changes produced by acute pericardial tamponade were examined. Tamponade produced the expected hemodynamic alteration; namely, depression on cardiac output, left ventricular pressure and LV dp/dt and elevation of right atrial and intrapericardial pressures. The mechanism of the hemodynamic disturbances was that the elevation of the intrapericardial pressure produced a negative atrial transmural pressure and disturbed atrial and ventricle filling producing the vicious cycle: diminished venoatrial gradient leads to decreased cardiac output leads to attenuated effect of ventricular systole on atrial filling, and so forth. The myocardial contractility was not impaired in cardiac tamponade.
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