Introduction: Automated peritoneal dialysis (APD) employs cyclers to control inflow and outflow of the dialysis fluid to the patient's abdomen. To allow more patients to use this modality, cyclers should support the achievement of an adequate dialysis dose and be easy to use, cost-effective, and silent. The new SILENCIA cycler (Fresenius Medical Care, Bad Homburg, Germany), designed to improve these characteristics in comparison to its predecessor device, was evaluated in this respect in a prospective study.

Methods: This cross-over study comprised two 2-week study periods, separated by a 3-week training phase. First, patients underwent APD with their current cycler (PD-NIGHT [Fresenius Medical Care, Bad Homburg, Germany] or HomeChoice Pro [Baxter, Deerfield, IL, USA] as control), followed by training on the SILENCIA cycler. Then, patients were switched to the SILENCIA cycler. During each treatment period, we collected data on total Kt/Vurea, ultrafiltration (UF) volume, patient-reported outcomes (sleep quality, among others), and device handling.

Results: Sixteen patients were enrolled; 2 patients terminated the study prematurely before study intervention, 1 patient due to a protocol violation. In 13 patients, total Kt/Vurea and UF could be evaluated. Neither Kt/Vurea nor UF differed significantly between control and SILENCIA cyclers. Out of 10 patients answering the questionnaire on sleep quality after the 2-week phase with the SILENCIA cycler, sleep quality improved in 5 patients; in the other patients, sleep quality was rated unchanged compared to the previously used cycler. The average reported sleep time was 5.9 ± 1.8 h with the PD-NIGHT, 7.2 ± 2.1 h with HomeChoice Pro, and 8.0 ± 1.6 h with the SILENCIA cycler. All patients were much or very much satisfied with the new cycler.

Conclusion: The SILENCIA cycler delivers adequate urea clearance and UF. Importantly, sleep quality improved, possibly related to less caution messages and alarms.

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http://dx.doi.org/10.1159/000530464DOI Listing

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