Table 5.

Proportion of patients with abnormal serum electrolyte values at 30 minutes posthemodialysis

Laboratory Parameter	Lower Limit Normal	Frequency of Posthemodialysis Concentrations Below the Lower Limit Normal (%)	Upper Limit Normal	Frequency of Posthemodialysis Concentrations Above the Upper Limit Normal (%)
Sodium (mEq/L)	<135	3/38 (7.9)	>145	0 (0)
Potassium (mEq/L)	<3.5	11/38 (29.0)	>5.0	1 (2.6)
Bicarbonate (mEq/L)	<22	0 (0)	>28	13 (34.2)
Calcium (mg/dl)	<8.5	4/38 (10.5)	>10.4	1 (2.6)
Magnesium (mg/dl)	<1.7	7/38 (18.4)	>2.4	0 (0)
Phosphate (mg/dl)	<2.5	17/38 (44.7)	>4.5	1 (2.6)

A total of 38 sessions from 38 patients had 30-min posthemodialysis measurements.