Key result
Apamin eliminated recurrent spontaneous ventricular fibrillation and increased postshock APD80 in failing rabbit ventricles (from 126±5 to 153±4 ms, P<0.05).
Why the study?
Does apamin prevent postshock APD shortening and recurrent spontaneous ventricular fibrillation in failing rabbit ventricles?
Does apamin prevent postshock APD shortening and recurrent spontaneous ventricular fibrillation in failing rabbit ventricles?
p-value: p=<0.05
In a rabbit model of heart failure, increased calcium sensitivity of SK channels contributes to postshock APD shortening and recurrent ventricular fibrillation, which can be eliminated by SK channel blockade with apamin.
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May warrant SK targeting to curb postshock VF in HF; leaves open human translation.
Chua et al. (2011) studied Tachycardia-induced heart failure and recurrent ventricular fibrillation (n=22). Apamin vs. Baseline / nonfailing ventricles was evaluated on Postshock action potential duration (APD80) and recurrent spontaneous ventricular fibrillation (p=<0.05). Apamin eliminated recurrent spontaneous ventricular fibrillation and increased postshock APD80 in failing rabbit ventricles (from 126±5 to 153±4 ms, P<0.05).
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