Patients with persistent atrial fibrillation had significantly lower baseline baroreflex sensitivity compared to those with paroxysmal atrial fibrillation (2.97 vs 4.70 ms/mm Hg; P=0.047).
Observational (n=67)
Does baroreflex sensitivity differ between persistent and paroxysmal atrial fibrillation, and how is it affected by catheter ablation?
Patients with persistent AF have more impaired baseline baroreflex sensitivity than those with paroxysmal AF, and catheter ablation further depresses BRS, particularly in paroxysmal AF.
Absolute Event Rate: 2.97% vs 4.7%
p-value: p=0.047
Background It has been reported that atrial fibrillation (AF) may contribute to impairment of baroreflex sensitivity (BRS). However, the difference of BRS between patients with persistent AF (PeAF) and those with paroxysmal AF (PAF) is unknown. We tested the hypothesis that patients with PeAF have a more impaired BRS compared with those with PAF. Methods and Results From October 2015 onwards, a total of 67 patients (14 women 20.9%; mean age 65.2±10.1 years) with PAF (n=46, 68.7%) and PeAF (n=21, 31.3%), who underwent catheter ablation, were prospectively enrolled. The baseline BRS was evaluated during sinus rhythm. The baseline BRS in patients with PeAF was significantly lower than those with PAF (2.97 0.52–6.62 ms/mm Hg versus 4.70 2.36–8.37 ms/mm Hg, P =0.047). The BRS was significantly depressed after catheter ablation in all the patients (4.66 1.80–7.37 ms/mm Hg versus 0.55 −0.15 to 1.22 ms/mm Hg, P <0.001). However, the depression of BRS because of catheter ablation appeared attenuated in patients with PeAF when compared with those with PAF. The number of patients who did not show depression of BRS was significantly greater, that is, patients with PeAF (3/12, 25%) than those with PAF (0/46, 0%, P <0.01). Conclusions Our findings demonstrated that the baseline BRS was more depressed in patients with PeAF compared with PAF. Catheter ablation depressed BRS irrespective of the type of AF, with a greater effect in patients with PAF than PeAF.
Miyoshi et al. (Wed,) conducted a observational in Atrial fibrillation (n=67). Persistent atrial fibrillation vs. Paroxysmal atrial fibrillation was evaluated on Baseline baroreflex sensitivity (BRS) (p=0.047). Patients with persistent atrial fibrillation had significantly lower baseline baroreflex sensitivity compared to those with paroxysmal atrial fibrillation (2.97 vs 4.70 ms/mm Hg; P=0.047).
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