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Table 2 Subsequent laboratory investigation

From: Distal renal tubular acidosis presenting with an acute hypokalemic paralysis in an older child with severe vesicoureteral reflux and syringomyelia: a case report

Parameter

Unit

Result

Reference Range

3rd day of hospitalization

After the UTIa resolved

Serum electrolytes

    

  Sodium

mEq/L

138

 

135–145

  Potassium

mEq/L

3.2

 

3.5–4.5

  Chloride

mEq/L

115.9

 

98–107

  Calcium (ionized)

mmol/L

1.1

 

1.01–1.31

  Phosphate

mg/dL

4.6

 

4–7

  Magnesium

mg/dL

1.76

 

1.7–2.1

Venous blood gas analysis

    

  pH

 

7.256

 

7.35–7.45

  pCO2

mmHg

30.2

 

35–45

  pO2

mmHg

22.1

 

75–100

  HCO3

mmol/L

13.6

 

21–25

  Base excess

mmol/L

-11.6

 

-2.5 – +2.5

  O2 saturation

%

49.1

 

60–80

Urinalysis

    

  Color

 

Yellow

Yellow

Clear

  Clarity

 

Clear

Clear

4.5–8

  pH

 

7.5

7.5

1.005–1.030

  Specific gravity

 

< 1.005

< 1.005

Negative

  Glucose

 

Negative

Negative

Negative

  Blood

 

1+

Trace

Negative

  Ketones

 

Negative

Negative

Negative

  Protein

 

Trace

Negative

3.2–16

  Urobilinogen

 

3.2

3.2

Negative

  Bilirubin

 

Negative

Negative

Negative

  Leukocyte esterase

 

Trace

Negative

Negative

  Nitrite

 

Negative

Negative

Clear

Urine electrolytes and metabolites

   

  Sodium

mEq/L

25

31

(> 20)

  Potassium

mEq/L

11.3

9.4

20–80

  Chloride

mEq/L

34

29

46–168

  Urine anion gap

mEq/L

2.3

11.4

0–10

  Urea nitrogen

mmol/L

 

53.6

 N/A

  Glucose

mmol/L

 

0

0–0.8

  Calculated urine osmolality

mOsmol/kg

 

134.4

 

  Measured urine osmolality

mOsmol/kg

 

136.3

400–800

  Urine osmolal gap

mOsmol/kg

 

1.9

10–100

  Calcium creatinine urine ratio

mg/g

0.19

 

< 0.2

Thyroid function

    

  fT4

ng/dL

1.04

 

0.89–1.37

  TSHs

µIU/mL

4.18

 

0.35–4.94

  1. aUTI urinary tract infection