Key result
Volume overload-induced heart failure in rats caused marked contractile dysfunction and less efficient energy utilization in Ca2+ handling processes compared to sham operation (P<0.05).
Why the study?
Does volume overload via aortocaval shunt alter LV mechanical work and energetics in rats?
Population
14 male Wistar rats weighing 300-350 g
Comparison
Volume overload induced via abdominal aortocaval… vs Sham operation without functional shunt
Design
Preclinical, randomized into two groups
Follow-up
3 months
Authors
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May support Ca2+ handling as a target in rodent volume-overload models; leaves open translation to human HF.
Does volume overload via aortocaval shunt alter LV mechanical work and energetics in rats?
p-value: p=<0.05
Volume overload-induced heart failure in rats is characterized by marked contractile dysfunction and less efficient energy utilization in Ca2+ handling, suggesting that restoring Ca2+ handling may improve contractility.
Takewa et al. (2009) studied Volume overload heart failure (n=14). Abdominal aortic-inferior vena caval shunt (volume overload) vs. Sham operation was evaluated on Left ventricular mechanical work and energetics (including LV internal dimensions, LV pressure, and myocardial O2 consumption) (p=<0.05). Volume overload-induced heart failure in rats caused marked contractile dysfunction and less efficient energy utilization in Ca2+ handling processes compared to sham operation (P<0.05).
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