21-04-2023 | Macrocytic Anemia | Clinical Quiz
Severe anemia and massive proteinuria in a boy with diabetes mellitus: Questions
Published in: Pediatric Nephrology | Issue 9/2023
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A 7-year-old boy with a diagnosis of type 1 diabetes mellitus (DM) for 2 years was admitted to the emergency department with weakness, pallor, and edema of the hands and feet. There was no change in the amount or color of urine. He denied fever or any finding that could be associated with infectious disease. He was using subcutaneous insulin and daily blood sugar follow-up was done regularly. It was learned that his parents had given three different formulas of ayurvedic medicine from India (Madhumeha Nivarin®, Punarnavasavam®, Jambavasava®) every day for 5 months in order to relieve type 1 DM. He was also taking 45 mg/day of oral zinc for 6 months. There was no kidney disease in the family. On physical examination, height was 124 cm (50–75 p), body weight 18 kg (10 p), blood pressure 100/50 mmHg (95th percentile 130/83 mmHg), and heart rate 114/min. He had pallor on conjunctiva and edema on lower extremities. Systemic examination did not reveal any additional pathology. Laboratory results are presented in Table 1. Peripheral blood smear revealed macrocytic erythrocytes without findings associated with hemolysis (Fig. 1).
Variable
|
Value
|
Normal range
|
---|---|---|
Hemoglobin
|
2.4 gr/dL
|
> 11.5 gr/dL
|
Mean corpuscular volume
|
100 fl
|
70–85 fl
|
Red cell distribution width
|
13.2%
|
11.5–15.5%
|
Leukocyte
|
1700/mm3
|
4300–11000/mm3
|
Neutrophil
|
490/mm3
|
2000–7000/mm3
|
Lymphocyte
|
960/mm3
|
1300–3500/mm3
|
Platelet
|
219,000/mm3
|
150,000–450,000/mm3
|
Blood urea nitrogen
|
14 mg/dL
|
5–18 mg/dL
|
Serum creatinine
|
0.32 mg/dL
|
0.4–0.6 mg/dL
|
Plasma albumin
|
2.7 g/dL
|
3.8–5.4 g/dL
|
Plasma glucose
|
218 mg/dL
|
60–100 mg/dL
|
HbA1c
|
6.1%
|
4–6%
|
Total body iron
|
106 μg/dL
|
33–193 μg/dL
|
Vitamin B12
|
550 ng/L
|
197–771 ng/L
|
Folic acid
|
8.4 μg/L
|
4.5–32.2 μg/L
|
Lactate dehydrogenase
|
153 U/ L
|
120–300 U/L
|
Reticulocyte count
|
0.29 %
|
0.98–1.94%
|
Thyroid-stimulating hormone
|
1.98 mU/L
|
0.6–4.8 mU/L
|
Free thyroxine
|
1.14 ng/dL
|
0.97–1.67 ng/dL
|
Urine analysis
|
||
pH
|
6.5
|
5–8
|
Density
|
1019
|
1005–1030
|
Glucose
|
+ 3
|
Neg
|
Protein
|
+ 3
|
Neg
|
Urine protein/creatinine ratio
|
2.59 mg/mg
|
< 0.2 mg/mg
|
Daily urinary protein excretion
|
4300 mg/day
|
< 150 mg/day
|