The present invention relates to an apparatus for carrying out a tidal peritoneal dialysis treatment of a patient, wherein the dialysis treatment comprises a sequence of cycles which each have a filling period, a dwell period and a drain period, wherein the apparatus has at least one cycler which is suitable for filling the abdominal cavity of the patient with a specific inflow volume of fresh dialysis solution up to a reaching of a specific patient volume in the filling period and for emptying consumed dialysis solution from the abdominal cavity of the patient up to a reaching of a specific tidal outflow target in the drain period, wherein the apparatus furthermore has at least one processor which controls the cycler in at least one operating mode such that the drain period is ended before reaching the tidal outflow target so that a permitted residual volume remains in the abdominal cavity and then a switch is made to a filling period and in that the filling period is carried out such that the filling volume of the patient lies at a permitted patient volume above the specific patient volume on the completion of the filling period.本發明涉及一種用於執行一患者之一潮式腹膜透析治療的設備，其中該透析治療包含一系列循環，該等循環各自具有一灌入期、一留置期及一引流期，其中該設備具有至少一個循環器，該循環器適用於在該灌入期中將一特定流入量的新鮮透析液灌入該患者之腹腔一直到達到一特定的患者量，並且適用於在該引流期中將消耗的透析液從該患者之該腹腔清空一直到達到一特定的潮汐流出目標，其中該設備還具有至少一個處理器，該處理器以至少一種操作模式控制該循環器，使得該引流期在達到該潮汐流出目標之前結束，使得一容許的殘餘量停留在該腹腔中，並且然後轉換到一灌入期，並且執行該灌入期，使得該患者之該灌入量在該灌入期完成時處於高於該特定患者量的一容許的患者量。
