The dialysis procedure as a trigger for atrial fibrillation: new insights in the development of atrial fibrillation in dialysis patients
- M S Buiten1,
- M K de Bie1,
- J I Rotmans2,
- B A Gabreëls3,
- W van Dorp4,
- R Wolterbeek5,
- S A Trines1,
- M J Schalij1,
- J W Jukema1,
- T J Rabelink2,
- L van Erven1
- 1Department of Cardiology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
- 2Department of Nephrology, LUMC, Leiden, The Netherlands
- 3Department of Nephrology, Rijnland Hospital, Leiderdorp, The Netherlands
- 4Department of Nephrology, Kennemer Gasthuis, Haarlem, The Netherlands
- 5Department of Medical Statistics, LUMC, Leiden, The Netherlands
- Correspondence to Dr L van Erven, Department of Cardiology, Leiden University Medical Center, P O Box 9600, Leiden 2300 RC, The Netherlands;
- Received 18 December 2013
- Revised 29 January 2014
- Accepted 3 March 2014
- Published Online First 26 March 2014
Aims Atrial fibrillation (AF) is common in dialysis patients and is associated with increased morbidity and mortality. The pathophysiology may be related to common risk factors for both AF and renal disease or to dialysis-specific factors. The purpose of this study was to determine whether and how AF onset relates to the dialysis procedure itself.
Methods All dialysis patients enrolled in the implantable cardioverter defibrillator-2 (ICD-2) trial until January 2012, who were implanted with an ICD, were included in this study. Using the ICD remote monitoring function, the exact time of onset of all AF episodes was registered. Subsequently, this was linked to the timing of dialysis procedures.
Results For the current study, a total of 40 patients were included, follow-up was 28±16 months, 80% male, 70±8 years old. A total of 428 episodes of AF were monitored in 14 patients. AF onset was more frequent on the days of haemodialysis (HD) (p<0.001) and specifically increased during the dialysis procedure itself (p=0.04). Patients with AF had a larger left atrium (p<0.001) and a higher systolic blood pressure before and after HD (p<0.001).
Conclusion This study provides insight in the exact timing of AF onset in relation to the dialysis procedure itself. In HD patients, AF occurred significantly more often on a dialysis day and especially during HD. These findings might help to elucidate some aspects of the pathophysiology of AF in dialysis patients and could facilitate early detection of AF in these high-risk patients.