Cephalhematoma and petechial rashes associated with acute parvovirus B19 infection: a case report

BMC Infectious Diseases

Table 1 Laboratory data ^a

Variable	Reference range^b	Days of hospitalization				After discharge
		Day 1	Day 2	Day 3	Day 5	Day 25
White cell count (/mm³)	3500–9200	2900	2400	2600	3400	4900
Differential count (%)
Band			7	3	1	1
Segment			54	32	37	37.5
Lymphocytes^c			28	54	56	54.5
Monocyte			11	8	5	2
Hemoglobin (g/dl)	13.8–16.6	13.1	12.6	13.0	12.2	14.2
Hematocrit (%)	40.2–49.4	38.2	36.0	34.9	35.1	41.4
Reticulocyte (%)	0.8–2.0		0.2	0.1	0.2	1.1
Platelet count (/mm³)	150,000–365,000	141,000	111,000	106,000	106,000	151,000
Erythrocyte sedimentation rate (mm/h)	0–7		14
C-reactive protein (mg/dl)	<0.3	3.26	1.18	0.52	0.12	0.02
Lactate dehydrogenase (U/L)	125–237	214	210	185	202	259
Aspartate aminotransferase (U/L)	9–38	17	18	18	31	18
Alanine aminotransferase (U/L)	4–36	3	3	3	9	3
Total bilirubin (mg/dl)	0.3–1.3	0.8	0.4	0.3	0.4	0.5
Immunoglobulin G (mg/dl)				1130
Antinuclear antibody (Index)	<40		<40
Prothrombin time (s)		14.6	11.6	13.1	12.2	11.1
International normalized ratio		1.25	0.99	1.11	1.04	0.97
Activated partial thromboplastin time (s)	25.5–36.1	30.2	28.8	28.6	28.2	30.5
Protein induced by vitamin K absence-II (mAU/ml)	<40		32
Fibrinogen (mg/dl)	186–355	306	309	266	242	239
D-dimmer (μg/dl)	<2.5		<0.5
Antithrombin (%)	83–128		101
Thrombin–antithrombin complex (ng/ml)	0–2.9		1.6
Protein C (%)	75–154		69
Protein S (%)	74–132		71.2
Platelet aggregation activity				Normal
Bleeding time	<5 min		2 min and 30 s
Parvovirus B19 IgM (Index)	<0.8			10.06
EBV-VCA IgM (Index)⁴	<10		10
EBV-VCA IgG (Index)⁴	<10		160
EBNA	<10		40

^aBecause this patient was admitted during weekend, the available tests were reduced on day 1 (e.g., differential count on smear).
^bReference range at our institution, not adjusted for age. Blank column indicates that reference range was not available.
^cAtypical lymphocytes were not observed.
⁴measured by fluorescent antibody technique.
EB, Epstein–Barr virus; EBNA, Epstein–Barr nuclear antigen; VCA, viral capsid antigen.

ISSN: 1471-2334