Key result
Short-term statin therapy significantly decreased atrial conduction time (PA-TDI) from 121.7 ms to 118.7 ms, as well as P-wave dispersion and amplitude, in patients without atrial tachyarrhythmia.
Why the study?
Does statin therapy improve P-wave characteristics and atrial conduction time in patients with statin indications?
Observational (n=132)
Single-blind (evaluators)
Does statin therapy improve P-wave characteristics and atrial conduction time in patients with statin indications?
Short-term statin therapy significantly reduces P-wave dispersion and atrial conduction time, suggesting a potential mechanism for statin-induced prevention of atrial fibrillation.
Answers are grounded in this paper and cite their sources.
May support statin effects on atrial conduction; hypothesis-generating for AF prevention and requires RCT confirmation.
BACKGROUND AND AIM: The aim of this study was to evaluate the effect of statin treatment on P-wave morphology, dispersion, and tissue Doppler imaging-derived atrial conduction time (PA-TDI), which are known to be predictors of atrial fibrillation (AF). METHODS: A total of 132 patients with guideline-directed statin indications but no clinical atrial tachyarrhythmias were studied. P-wave duration, P-wave dispersion, and P-wave amplitude on surface 12-lead electrocardiogram and PA-TDI were evaluated before and after three months of statin (either atrovastatin 10-40 mg/d or rosuvastatin 10-20 mg/d) treatment. RESULTS: Total and low-density lipoprotein cholesterol were significantly reduced after statin therapy. P-wave dispersion significantly decreased from 39.6 ± 9.4 to 36.9 ± 9.6 ms. Statin treatment significantly decreased both the maximum (from 1.5 ± 0.36 to 1.45 ± 0.33 mV, p = 0.001) and the minimum (from 1.07 ± 0.28 to 1.04 ± 0.27 mV, p = 0.01) P-wave amplitude. The PA-TDI value was found to be significantly shorter after statin treatment (121.7 ± 18.7 vs. 118.7 ± 15.8 ms, p = 0.016) CONCLUSIONS: Short-term statin therapy was shown to significantly affect P-wave amplitude, P-wave dispersion, and atrial conduction time in a broad range of patients without any clinical atrial tachyarrhythmia.
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Taçoy et al. (2015) conducted an observational in Guideline-directed statin indications without clinical atrial tachyarrhythmias (n=132). Statin therapy (atorvastatin or rosuvastatin) vs. Baseline (pre-treatment) was evaluated on Atrial conduction time (PA-TDI) (p=0.016). Short-term statin therapy significantly decreased atrial conduction time (PA-TDI) from 121.7 ms to 118.7 ms, as well as P-wave dispersion and amplitude, in patients without atrial tachyarrhythmia.
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