Table 1.

Characteristics and main outcome measures of the tested machines

Dialysis machine characteristics	F4008H	F5008S	BB
Number of machines	18	18	31
Number of dialysis treatments	31	53	69
Conductivity (mS/cm)	14.29 ± 0.42	14.05 ± 0.35	14.25 ± 0.42
Programmed DNa (mEq/L)	140.3 ± 3.7	140.3 ± 3.8	139.9 ± 3.8
Measured DNa (mEq/L)
ISE	145.75 ± 4.8	143.5 ± 3.05	146.5 ± 4.6
FP	143.9 ± 4.6	140.7 ± 2.9	146.7 ± 4.3
IC	143.6 ± 4	141.4 ± 3.5	145.4 ± 3.9
Measured minus programmed DNa (mEq/L), median (IQR)
ISE	5.5 (5−7)	4 (2−5)	7 (6−8)
FP	4 (2.25−5.75)	1 (−1−1.75)	7 (6−8)
IC	4 (2−5)	1 (−0.5−2)	6 (5−7)
Measured potassium (mEq/L), median (IQR)	NA	2.2 (2.1–2.3)	1.4 (1.1–3.6)
Measured calcium (mmol/L), median (IQR)	NA	2.7 (1.7–3.7)	0.92 (0.36-1.52)
Measured magnesium (mmol/L), median (IQR)	NA	1.12 (1.06–1.26)	1.05 (0.98–1.14)

Results expressed as mean ± SD unless stated otherwise. 1.0 mEq/L sodium/potassium = 1.0 mmol/L, 2.0 mEq/L calcium/magnesium = 1.0 mmol/L.

NA, not available.