Key result
Experimental CHF in dogs selectively decreased atrial Ito, ICa, and IKs, increased NCX current, and prolonged mean AF duration from 8 to 535 seconds (P<0.01).
Why the study?
Does experimental congestive heart failure alter action potential properties and ionic currents in atrial myocytes?
Does experimental congestive heart failure alter action potential properties and ionic currents in atrial myocytes?
Absolute Event Rate: 535% vs 8%
p-value: p=<0.01
Experimental heart failure induces distinct cellular electrophysiological remodeling in atrial myocytes, creating a substrate for atrial fibrillation.
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Hypothesis-generating for HF-AF ionic mechanisms in animals; leaves open human translation and clinical relevance.
Li et al. (2000) studied Congestive heart failure. Experimental congestive heart failure vs. Control was evaluated on Mean AF duration (seconds) (p=<0.01). Experimental CHF in dogs selectively decreased atrial Ito, ICa, and IKs, increased NCX current, and prolonged mean AF duration from 8 to 535 seconds (P<0.01).
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