Atrial fibrillation fluid retention7/10/2023 ![]() AF treatment and prevention can be ameliorated by understanding the underlying mechanisms of positional AF. Because stretch of the atrial myocardium is proarrhythmic for AF ( Ravelli and Allessie, 1997), and a left lateral body position increases atrial dimensions in humans ( Wieslander et al., 2019), we hypothesized that left lateral recumbence is a frequent AF-triggering body position. Our objective was to evaluate the incidence of self-reported “positional” AF in symptomatic paroxysmal AF (episode duration <1 week) patients and the clinical characteristics of these patients to facilitate their identification in clinical practice. It remains however unknown how often AF depends on body position and which body position is most prone to set off AF. However the patient’s body position may also play a part in nocturnal arrhythmogenesis because a change in body position has been mentioned as a trigger for AF ( Groh et al., 2019). Sleeping is a known trigger for atrial fibrillation (AF) and is considered to be caused by a high vagal nervous activity and obstructive sleep apnea ( Rosso et al., 2010 Hohl et al., 2014). Understanding of the underlying mechanisms of positional AF can contribute to AF treatment and prevention. ![]() Moreover, positional AF is associated with overweight. Patients with positional AF had a higher body mass index compared to patients without nocturnal/positional AF, but otherwise resembled these patients.Ĭonclusion: Body position, and the left lateral position, in particular, is a common trigger of AF in symptomatic AF patients. The triggering body position was left lateral position in 57% of cases, supine position in 33%, right lateral position in 10%, and prone position in 5% ( p = 0.003 overall difference in prevalence). Twenty-two percent of patients reported a specific body position as a trigger of their AF symptoms. Results: Ninety-four symptomatic paroxysmal AF patients were included. ![]() Methods: We performed a questionnaire study of symptomatic paroxysmal AF (episodes of AF < 1 week) patients scheduled for a first AF ablation therapy at Catharina Hospital, Eindhoven, the Netherlands and at University Hospital, Bordeaux, France. Background: Because stretch of the atrial myocardium is proarrhythmic for atrial fibrillation (AF) and a left lateral body position increases atrial dimensions in humans, we hypothesized that left lateral recumbence is a frequent AF-triggering body position in AF patients. ![]()
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