Journal List > Perinatology > v.27(3) > 1071327

Kim, Jo, and Kim: Neonatal Seizures Accompanied by Cerebral White Matter Injury Associated with Rotavirus Infection

Abstract

Purpose

Few studies have investigated the neurological complications of rotavirus infection in newborns. This study reports on clinical characteristics of newborns with seizures during rotavirus infection period and the neurological complications through case reports of infants who experienced seizures during rotavirus infection and demonstrated deep white matter injury on brain magnetic resonance imaging (MRI).

Methods

The study retrospectively investigated the medical records of newborn patients with positive rotavirus results who admitted to the neonatal intensive care unit of Dong-a University Hospital between January 2010 and May 2015. We analyzed the clinical characteristics of patients with seizures compared to without seizures among the patients of positive rotavirus results. The clinical characteristics of seizure patients according to the stool rotavirus antigen test results (positive vs. negative) and MRI results (normal vs. abnormal) were compared and analyzed.

Results

Of the 144 infants with positive rotavirus results, 17 infants (11.8%) had the seizures. These 17 patients showed no other symptom except seizures, positive rotavirus results predominantly at 4-6 days after birth, and more abnormal MRI results compared to without seizures. These results investigated in the seizure infants with positive rotavirus and infants of abnormal MRI results with positive rotavirus in same trend. In 15 newborns who showed positive stool test results and abnormal MRI results, seizure symptoms occurred at 4-6 days after birth, mostly following a pattern of clonic seizures. On MRI, all these newborns showed cerebral deep white matter injury in areas including the corpus callosum (CC) and internal capsule. Six out of 15 newborns underwent follow-up MRI scans, and five of them showed porencephalic white matter disease or periventricular leukomalacia.

Conclusion

In cases when a newborn shows seizures and cerebral deep white matter injury on diffusion-weighted MRI, rotavirus infection should be strongly suspected, and the patient should be subjected to long-term follow-up for neurological development.

Figures and Tables

Fig. 1

Diffusion-weighted images of the patients. Diffusion-weighted images of the 3 patients (A; patient 8, B; patient 9, C; patient 10) of the group of positive rotavirus and abnormal MRI. Note the high signals on deep white matter, corpus callosum and internal capsule.

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Fig. 2

Follow-up magnetic resonance image (MRI) after 2 weeks from seizure onset of patients A shows porencephaly and cerebromalacia in both frontal and parietal white matter, periventricular leukomalacia around occipital horn (A-1, A-2; patient 8). Likewise, porencephaly in frontal and parietal white matter is demonstrated in follow-up MRI of patient B (B-1, B-2; patient 9).

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Table 1

Comparison of the Clinical Characteristics between Infants with Seizures and without Seizures in Rotavirus Group

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Rotavirus+Seizure (+) (n=17) Rotavirus+Seizure (−) (n=127) P value
Gestational age (weeks) 37.6±1.0 35.8±4.2 0.09
Male, n (%) 12 (70.6) 67 (52.8) 0.11
Birth weight (kg) 3.1±0.4 2.7±0.9 0.06
Cesarean section, n (%) 7 (41.2) 73 (57.5) 0.42
Apgar score (1'/5') 8.3±0.8/9.1±0.9 7.4±1.9/9.2±0.9 0.12/0.48
Age at positive rotavirus (days) 4.8±0.6 14.3±17.2 0.03
NICU screening, n (%) 0 34 (26.8) 0.01
Vomiting, n (%) 0 14 (11.0) 0.37
Poor feeding, n (%) 0 32 (25.2) 0.02
Diarrhea, n (%) 1 (5.9) 20 (15.7) 0.13
Fever, n (%) 0 19 (15.0) 0.13
Abnormal MRI, n (%) 15/17 (88.2) 1/19 (5.3) <0.01

Values are expressed as number (percent) or mean±standard deviation

Abbreviations: 1', one minute; 5', five minutes; NICU, neonatal intensive care unit; MRI, magnetic resonance imaging

Table 2

Comparison of the Clinical Characteristics between Infants with Positive Rotavirus and Negative Rotavirus in Seizure Group

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Seizure+Rotavirus (+) (n=17) Seizure+Rotavirus (−) (n=14) P value
Gestational age (weeks) 38.2±1.0 39.2±1.2 <0.01
Male, n (%) 13 (76.5) 6 (42.9) 0.08
Birth weight (kg) 3.2±0.5 3.1±0.4 0.54
Cesarean section, n (%) 8 (47.1) 9 (64.3) 0.47
Apgar score(1'/5') 8.3±0.8/9.1±0.9 7.9±1.4/8.9±1.2 0.54/0.59
Age at seizure onset (days) 4.9±0.8 5.0±3.3 0.85
Seizure onset between 4 and 6 days of life, n (%) 16 (94.1) 2 (14.3) <0.01
Abnormal findings in MRI, n (%) 15 (88.2) 9 (64.3) 0.20
Abnormal findings in EEG, n (%) 5 (29.4) 2 (20.0) 0.68

Values are expressed as number (percent) or mean±standard deviation

Abbreviations: 1', one minute; 5', five minutes MRI, magnetic resonance imaging; EEG, electroencephalography

Table 3

Comparison of the Clinical Characteristics between Infants with Abnormal MRI and Normal MRI in Seizure Group

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Seizure+Abnormal MRI (n=24) Seizure+Normal MRI (n=7) P value
Gestational age (weeks) 38.6±1.1 39.0±1.5 0.25
Male, n (%) 16 (66.7) 3 (42.9) 0.38
Birth weight (kg) 3.1±0.5 3.0±0.4 0.56
Cesarean section, n (%) 13 (54.2) 4 (57.1) 1.0
Apgar score(1'/5') 8.0±1.2 / 8.9±1.1 8.4±0.8 / 9.3±0.8 0.38/0.53
Age at seizure onset (days) 4.8±2.2 5.3±2.4 0.95
Positive rotavirus antigen, n (%) 15 (62.5) 2 (28.5) 0.20

Values are expressed as number (percent) or mean±standard deviation

Abbreviations: 1', one minute; 5', five minutes MRI, magnetic resonance imaging

Table 4

Comparison of the Clinical Characteristics between Infants with Positive Rotavirus and Negative Rotavirus in Abnormal MRI Group

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Abnormal MRI+Rota (+) (n=15) Abnormal MRI+Rota (−) (n=9) P value
Gestational age (weeks) 38.0±0.9 39.4±0.8 <0.01
Male, n (%) 12 (80) 4 (44.4) 0.10
Birth weight (kg) 3.2±0.5 3.1±0.5 0.73
Cesarean section, n (%) 7 (46.7) 6 (66.7) 0.42
Apgar score(1'/5') 8.2±0.8 / 9.0±1.0 7.5±1.6 / 8..6±1.4 0.34/0.55
Age at seizure onset (days) 5.0±0.7 4.6±3.6 0.68
Seizure onset between 4 and 6 days of life, n (%) 15 (100) 0 (0) <0.01
Abnormal findings in EEG, n (%) 4 (36.3) 0 (0) 0.26

Values are expressed as number (percent) or mean±standard deviation

Abbreviations 1', one minute; 5', five minutes MRI, magnetic resonance imaging; EEG, electroencephalography

Table 5

Clinical Characteristics, Seizure Type, MRI and EEG Findings of the Group of Positive Rotavirus and Abnormal MRI

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Pt. No. GA/Sex Bwt. (g) Del. A/S (1'/5') Onset (days) Seizure type Abnormal brain DWI EEG Stool rotavirus antigen Follow-up brain MRI
1 38+4/M 3,820 NSVD 8/9 5 Clonic, F Deep white matter, CS NS + Porencephalic change in white matter
2 35+5/M 2,420 NSVD 9/10 5 Clonic, M Deep white matter NS +
3 38+3/M 3,220 NSVD 7/8 4 Clonic, M Deep white matter NS +
4 38+2/M 3,700 C/S 9/10 5 Clonic, G Deep white matter, CS, IC Multifocal sharp wave, predominant frontal +
5 37+5/F 2,410 C/S 8/9 6 Clonic, G Deep white matter, T NS +
6 39+3/M 3,270 NSVD 8/9 5 Clonic, M Deep white matter, CS, IC Encephalopathic pattern + Cerebromalacia in white matter
7 38+4/M 3,720 C/S 8/9 5 Clonic, G Deep white matter, CS, IC, T Infrequent multifocal sharp wave +
8 38+0/F 2,520 C/S 9/10 5 Clonic, M Deep white matter, CS, IC, T NS + Cystic PVL, Cerebromalacia in white matter
9 37+3/M 3,100 NSVD 9/10 5 Clonic, M Deep white matter, CS, IC Multifocal sharp wave + Porencephalic change in white matter
0010 36+6/M 3,200 C/S 9/10 5 Clonic, M Deep white matter NS +
0011 38+0/F 2,760 NSVD 8/9 5 Clonic, M Deep white matter, CS NS +
0012 38+1/M 2,970 NSVD 7/7 4 Rigidity BG NS + Normal
0013 37+6/M 2,780 NSVD 9/9 4 Pedaling Deep white matter, CS ,IC, EC NS + Porencephaly in white matter
0014 38+2/M 3,390 C/S 7/8 6 Clonic, M Deep white matter, CS, IC, T NS +
0015 39+3/M 3,120 C/S 9/10 6 Clonic, F Deep white matter, CS, IC NS +

Abbreviations: GA, gestatioanal age; Bwt, birth weight; Del, delivery method; A/S, apgar score; DWI, diffusion-weighted imaging; EEG, electroencephalography; F, focal; M, multifocal; G, generalized; CS, corpus callosum; IC, internal capsule; EC, external capsule; T, thamus; BG, basal ganglia; NS, non-specific

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