The Value of Electroencephalogram (EEG) Findings in the Evaluation and Treatment Management of Pediatric Acute Liver Failure

Background Pediatric acute liver failure (PALF) is still life-threatening and requires urgent care. The presence of encephalopathy is a clinical diagnosis, but it is more difficult to diagnose in children than in adults, and an electroencephalogram (EEG) can be invaluable. The role of EEG in managing the treatment of patients with PALF, other than the identification of encephalopathy, is unknown. This study aimed to investigate patients' EEGs, which may guide in choosing the most appropriate treatment in encephalopathy children. A further aim was to investigate a new score method, based on the laboratory results, which might indicate the presence of encephalopathy in cases with PALF. Methods Medical data of 33 PALF patients followed in our clinic were reviewed retrospectively. This study included 33 patients, whose EEG recording was taken on the first day of supportive treatment due to liver failure in the pediatric intensive care unit (PICU). The EEG findings were categorized into three classes: normal, epileptic and non-epileptic paroxysmal, and background encephalopathic patterns including widespread slowing and voltage suppression. Result This retrospective study included 13 male and 20 female patients with a mean age at presentation of 4.82±4.81 months whose EEG was performed on the first day of supportive therapy for liver failure in the PICU. The EEG findings were categorized into three groups: normal, epileptic and non-epileptic paroxysms, and encephalopathic patterns including diffuse background slowing and voltage suppression. Comparing EEG findings and treatments, we found that the normal EEG group responded well to liver-supporting therapy and the rate of plasmapheresis treatment was significantly higher in the diffuse slowing group. Patients with diffuse slowing of the EEG were 9.6 times more likely to receive plasmapheresis. We found that above a cut-off of ≥7.5 for the TAI (total bilirubin, albumin, and international normalized ratio (INR)) score used in our study, the risk of developing encephalopathy increased 14.4-fold. Conclusions In PALF, EEG findings can provide findings that will help clinicians in determining treatment selection and prognosis, as well as detecting epileptic focus and encephalopathy. The TAI score can be used to assess the risk of encephalopathy in cases of PALF, when it is challenging to identify encephalopathy or when an EEG is not possible.

Ultra-structural and histopathological features of liver biopsy taken during laparotomy to confirm the diagnosis of biliary atresia

BACKGROUND

Neonatal cholestasis is caused by a group of diseases that cause jaundice, which can be encountered in the neonatal period. Biliary atresia (BA) and idiopathic neonatal hepatitis (INH) are among neonatal cholestasis diseases.

AIMS

The aim of this study was to perform histopathological and ultra-structural examinations of liver biopsy tissue samples from BA and INH patients with liver biopsies taken during laparotomy to confirm the diagnosis of biliary atresia.

SETTINGS AND DESIGN

A total of patients undergoing Kasai surgery before the age of 60 days were included in an "early" group (n = 7), whereas patients undergoing surgery after the age of 60 days were included in a "late" group (n = 11). The control group (n = 11) included INH patients.

MATERIALS AND METHODS

For histopathological examinations, liver tissue samples obtained intra-operatively were subjected to routine histopathological procedures after being stained with caspase-3 and cytokeratin-7 antibodies. Ultra-structural evaluations were also performed. Statistical analysis used: For comparisons between the groups, a one-way analysis of variance (ANOVA) test and the Mann-Whitney U test were used for continuous variables.

RESULTS

Histopathological findings reflected the specific liver pathologic findings seen in biliary atresia. Although there was no significant difference between the BA groups, these parameters were not detected in the control group. The histopathological evaluations revealed no significant differences in the findings of liver parenchyma damage between the early, late, and control groups. Electron microscopic examinations showed that the patients in the late group had more severe signs of intra-cellular damage to the liver.

CONCLUSIONS

Although the histopathological examination revealed no significant differences in liver damage between the three groups, in ultra-structural evaluation, intra-cellular damage was found to be less in groups with better prognosis. Electron microscopy evaluations of intra-cellular damage may be more useful in this respect.

Is it possible to diagnose fulminant Wilson's disease with simple laboratory tests?

BACKGROUND

Wilson's disease is a rare cause of acute liver failure and is highly fatal without liver transplantation. Fast and accurate diagnostic methods are needed for fulminant Wilson's disease (FWD). In this study, we aimed to develop an early, simple and accurate diagnostic method to differentiate FWD from nonwilsonian acute liver failure (NWALF) causes using routine biochemical data.

METHODS

The medical records of 24 paediatric FWD and 120 paediatric NWALF cases diagnosed at the Department of Pediatric Gastroenterology, Hepatology, and Nutrition between January 2007 and February 2017 were retrospectively reviewed.

RESULTS

Using receiver operator characteristics curve (ROC) analysis, we have determined the best cut-off point for laboratory findings in FWD. Patients meeting these cut-off points were assigned one point and others were assigned zero point. We then formed a new variable consisting of the combination of 14 variables and performed a new ROC analysis. We obtained a cut-off point of ≥4.5 for FWD. The diagnostic performance of the score was characterized by a sensitivity of 0.889, a specificity of 0.879 (P < .001). A scoring system based only on aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase, AST/ALT ratio, uric acid and haemoglobin had a best cut-off point of ≥2.5 for FWD, which had a sensitivity of 0.875, a specificity of 0.867 (P < .001).

CONCLUSIONS

Our study demonstrated that biochemical markers offer almost as reliable, fast and accurate diagnosis of FWD as offered by ceruloplasmin and 24-hour urinary copper.