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In vivo and in vitro performance of a China-made hemodialysis machine: a multi-center prospective controlled study.

Abstract：

OBJECTIVE:To evaluate the in vivo and in vitro performance of a China-made dialysis machine (SWS-4000). METHODS:This was a multi-center prospective controlled study consisting of both long-term in vitro evaluations and cross-over in vivo tests in 132 patients. The China-made SWS-4000 dialysis machine was compared with a German-made dialysis machine (Fresenius 4008) with regard to Kt/V values, URR values, and dialysis-related adverse reactions in patients on maintenance hemodialysis, as well as the ultrafiltration rate, the concentration of electrolytes in the proportioned dialysate, the rate of heparin injection, the flow rate of the blood pump, and the rate of malfunction. RESULTS:The Kt/V and URR values at the 1st and 4th weeks of dialysis as well as the incidence of adverse effects did not differ between the two groups in cross-over in vivo tests (P > 0.05). There were no significant differences between the two groups in the error values of the ultrafiltration rate, the rate of heparin injection or the concentrations of electrolytes in the proportioned dialysate at different time points under different parameter settings. At weeks 2 and 24, with the flow rate of the blood pump set at 300 mL/min, the actual error of the SWS-4000 dialysis machine was significantly higher than that of the Fresenius 4008 dialysis machine (P < 0.05), but there was no significant difference at other time points or under other settings (P > 0.05). The malfunction rate was higher in the SWS-4000 group than in the Fresenius 4008 group (P < 0.05). CONCLUSIONS:The in vivo performance of the SWS-4000 dialysis machine is roughly comparable to that of the Fresenius 4008 dialysis machine; however, the malfunction rate of the former is higher than that of the latter in in vitro tests. The stability and long-term accuracy of the SWS-4000 dialysis machine remain to be improved.

journal_name

Biomed Eng Online

journal_title

Biomedical engineering online

authors

Wang Y,Chen XM,Cai GY,Li WG,Zhang AH,Hao LR,Shi M,Wang R,Jiang HL,Luo HM,Zhang D,Sun XF

doi

10.1186/s12938-017-0387-y

subject

Has Abstract

pub_date

2017-08-02 00:00:00

pages

issue

issn

1475-925X

pii

10.1186/s12938-017-0387-y

journal_volume

pub_type

临床试验,杂志文章,多中心研究

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In vivo and in vitro performance of a China-made hemodialysis machine: a multi-center prospective controlled study.