Key result
Heptanol preferentially slowed conduction velocity in the transverse direction (from 0.24 to 0.17 M/sec, p=0.002) compared to the longitudinal direction (from 0.56 to 0.46 M/sec, p=0.005).
Why the study?
Does heptanol alter conduction velocity in canine ventricular myocardium?
Population
Canine superfused ventricular epicardial tissue slices
Comparison
1.0-2.0 mM heptanol vs Baseline (before the addition of heptanol)
Design
Preclinical
Follow-up
30 minutes
Authors
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No immediate clinical implications; leaves open mechanistic insights into anisotropic conduction.
Does heptanol alter conduction velocity in canine ventricular myocardium?
Absolute Event Rate: 0.46% vs 0.56%
p-value: p=0.005
Heptanol preferentially slows conduction in the transverse direction of canine ventricular myocardium by selectively increasing junctional resistivity.
Balke et al. (1988) studied Cellular uncoupling in ventricular myocardium. Heptanol vs. Control (before heptanol administration) was evaluated on Conduction velocity in the longitudinal direction (M/sec) (p=0.005). Heptanol preferentially slowed conduction velocity in the transverse direction (from 0.24 to 0.17 M/sec, p=0.002) compared to the longitudinal direction (from 0.56 to 0.46 M/sec, p=0.005).
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