Table 5.

Serum electrolytes, urea and creatinine levels during different period of time (N = 238).

Electrolytes	Period 1	Period 2	Period 3
Chloride serum levels (normal range 98–107 mmol/L)
Low (<98 mmol/L)	32 (13.4%)	17 (7.1%)	16 (6.7%)
High (>107 mmol/L)	19 (8.0%)	35 (14.7%)	18 (7.6%)
Potassium serum levels (normal range 3.5–5.1 mmol/L)
Low (<3.5 mmol/L)	41 (17.2%)	46 (19.3%)	19 (8.0%)
High (>5.1 mmol/L)	2 (0.8%)	5 (2.1%)	–
Sodium serum levels (normal range 136–145 mmol/L)
Low (<136 mmol/L)	103 (43.3%)	38 (16.0%)	22 (9.2%)
High (>145 mmol/L)	–	5 (2.1%)	1 (0.4%)
Urea serum levels (normal range 2.5–6.4 mmol/L)
Low (<2.5 mmol/L)	53 (22.3%)	71 (29.8%)	64 (26.9%)
High (>6.4 mmol/L)	20 (8.4%)	12 (5.0%)	7 (2.9%)
Creatinine serum levels (normal range 53–115 umol/L)
Low (<53 umol/L)	61 (25.6%)	59 (24.8%)	58 (24.4%)
High (>115 umol/L)	13 (5.5%)	5 (2.1%)	–

Data were expressed as number (%).