Key result
Caval obstruction significantly reduced MRPR and end-diastolic fiber length, while MIP was unchanged and contractility remained the same as during the control state.
Caval obstruction reduces MRPR and end-diastolic fiber length without altering myocardial contractility compared to the control state.
Caval obstruction lowers preload-dependent indices without altering contractility; leaves open translation to clinical volume management.
Page 179: M. J. Frank, M. Nadimi, L. J. Lesniak, K. I. Hilmi, and G. E. Levinson. "Effects of cardiac tamponade on myocardial performance, blood flow, and metabolism." Page 183, legend to Fig. 3 should read, "Effect of cardiac tamponade on left ventricular performance." Page 183, legend to Fig. 4 should read, "Effect of caval obstruction on myocardial contractility. Abbreviations as in Fig. 2. MRPR and end-diastolic fiber length are significantly reduced, while MIP is unchanged. Contractility is same as that during control state."
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Frank et al. (1971) studied Cardiac tamponade. Caval obstruction vs. Control state was evaluated on Myocardial contractility, MRPR, end-diastolic fiber length, and MIP. Caval obstruction significantly reduced MRPR and end-diastolic fiber length, while MIP was unchanged and contractility remained the same as during the control state.
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