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- W2321998476 abstract "We evaluated the effect of two different doses of desethylamiodarone (DEA) and amiodarone on the ventricular fibrillation threshold (VFT). We ascertained the VFT in 24 pigs randomized to intravenous DEA, amiodarone, or vehicle. Ventricular fibrillation was induced by pacing the right ventricle by using a primary drive train at a cycle length of 270 ms for eight beats of 2-ms duration each. A secondary train of 20 pulses of 4-ms duration (100 Hz) immediately followed this over a total duration of 200 ms synchronized to the primary drive train. The intensity of the secondary train stimuli current was initially 2 mA and was increased by 2-mA increments until sustained VF with hemodynamic collapse was induced. The minimal current strength needed to induce sustained VF was defined as the VFT measured in mA. DEA (10 mg/kg) increased the VFT significantly over baseline from 13.5+/-4.9 to 23.2+/-8.8 mA (p = 0.0076). Amiodarone, 10 mg/kg, increased the VFT significantly over baseline (mean +/- SD) from 14.4+/-3.6 to 23.8+/-6.1 mA (p = 0.0016). An additional dose of amiodarone (15 mg/kg) increased the VFT to 38.5+/-15.9 mA, which is significantly greater than the VFT derived from lower-dose amiodarone (p = 0.046). We showed that DEA (10 mg/kg) has a similar antifibrillatory effect as 10 mg/kg of amiodarone. We also demonstrated a dose-dependent effect on VFT for amiodarone." @default.
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- W2321998476 date "1999-09-01" @default.
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- W2321998476 title "A Comparison of the Antifibrillatory Effects of Desethylamiodarone to Amiodarone in a Swine Model" @default.
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- W2321998476 doi "https://doi.org/10.1097/00005344-199909000-00019" @default.
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