Stroop Test Validation to Screen for Minimal Hepatic Encephalopathy in Pediatric Extrahepatic Portal Venous Obstruction

Prevalence of hepatic encephalopathy in patients with non-cirrhotic portal hypertension: A systematic review and meta-analysis

BACKGROUND

Hepatic encephalopathy, (HE) although commonly associated with cirrhosis, has also been reported in non-cirrhotic portal hypertension (NCPH). The importance of identifying and treating HE in NCPH lies in the fact that many patients may be wrongly diagnosed as having psychiatric or neurologic disorders. Hence, we aimed to systematically review the prevalence of HE in NCPH.

METHODS

A comprehensive search of three databases (Medline, Embase and Scopus) was conducted from inception to November 2022 for studies reporting on the prevalence of minimal HE (MHE) and overt HE (OHE) in patients with NCPH. Results were presented as pooled proportions with their 95% confidence intervals (CI).

RESULTS

Total 25 studies (n = 1487) were included after screening 551 records. The pooled prevalence of MHE in NPCH was 32.9% (95% CI: 26.7-39.0) without any difference between adult (32.9%, 95% CI: 23.5-42.3) and pediatric patients (32.6%, 95% CI: 26.1-39.1) (p = 0.941). There was no significant difference in the prevalence between patients with NCPH and compensated cirrhosis with odds ratio of 1.06 (95% CI: 0.77-1.44). The pooled event rate for prior history of OHE in NCPH was 1.2% (95% CI: 0.3-2.1).

CONCLUSION

Around one-third of the patients with NCPH have MHE, irrespective of age group. OHE is extremely rare in NCPH and is usually associated with a precipitating factor.

[Hepatic encephalopathy after portosystemic bypass surgery]

The most effective modern treatment for gastrointestinal bleeding following portal hypertension is portosystemic bypass surgery. Hepatic encephalopathy after these procedures is still an urgent problem in modern pediatric surgery, and radical treatment is unknown. To optimize treatment outcomes in children with hepatic encephalopathy, we should choose adequate treatment considering the risk of hepatic encephalopathy in the future. In this review, the authors discuss modern data on hepatic encephalopathy regarding symptoms, advantages and disadvantages of various treatment methods. Risk of hepatic encephalopathy with and without surgical treatment, as well as methods of diagnosis and treatment are particularly analyzed. Total portosystemic bypass surgery, especially portocaval shunt, is followed by higher risk of hepatic encephalopathy compared to selective shunts and physiological mesoportal bypass. The last two approaches are advisable to improve treatment outcomes in children with hepatic encephalopathy.

Consensus on the management of complications of cirrhosis of the liver in pediatrics

The Asociación Mexicana de Hepatología A.C. carried out the Consensus on the Management of Complications of Cirrhosis of the Liver in Pediatrics to provide physicians with useful information for treating said complications. A group of pediatric gastroenterologists and experts in nutrition, nephrology, and infectious diseases participated and reviewed the medical literature. The Delphi method was applied to obtain the level of agreement on the statements that were formulated. The statements were sent to the participants to be analyzed and voted upon, after which they were discussed in virtual sessions, and the final versions were produced. The aim of the consensus results was to issue indications for the management of pediatric patients with liver cirrhosis, to prevent or control complications.

Splenic stiffness and platelet count to predict varices needing treatment in pediatric extrahepatic portal vein obstruction

BACKGROUND

Surveillance endoscopy to detect varices needing treatment (VNT) is important to prevent bleeding and morbidity in portal hypertension. In adult and pediatric cirrhosis, platelet count and liver stiffness measurement (LSM) are useful in selecting patients for endoscopy. Such recommendations do not exist for extrahepatic portal vein obstruction (EHPVO). Splenic stiffness measurement (SSM) has been studied in adult and pediatric EHPVO with conflicting results and methodological errors. This study evaluates the role of platelet counts and SSM to predict VNT and bleeding in pediatric EHPVO while comparing LSM and SSM between pediatric EHPVO and controls.

METHODS

One hundred and seven children (55 with EHPVO and 52 controls) were recruited. Clinical, biochemical, hematological, and radiographic parameters of all children were noted. All children with EHPVO underwent endoscopy.

RESULTS

Of the 55 children with EHPVO, 48 (87.3%) had VNT. There was no difference in the platelet counts (85,000/mm³ vs. 120,000/mm³, p = 0.58) and SSM (3.62 vs. 3.19, p = 0.05) between EHPVO children with VNT and those without. They had poor sensitivity and specificity to predict VNT. EHPVO children with bleeding had higher SSM that those without. LSM was higher among EHPVO than among controls (1.19 vs. 1.10, p = 0.003). Those with LSM higher than controls had normal liver histology.

CONCLUSION

SSM is higher in EHPVO bleeders but SSM and platelet counts are unreliable to predict VNT in pediatric EHPVO. Surveillance endoscopies may be needed in all pediatric EHPVO until better screening strategies are available.

TRIAL REGISTRATION

Not applicable.

Novel computerized psychometric tests as primary screening tools for the diagnosis of minimal hepatic encephalopathy

Minimal hepatic encephalopathy (MHE) is a critical neurocognitive complication of decompensated liver cirrhosis and portosystemic shunting, which results in a wide range of cognitive deficits including impairments in working attention, psychomotor speed, and executive function. Current guidelines have recommended paper-and-pencil psychometric tests for the diagnosis of MHE. Most high-risk cirrhotic patients are required to be examined; however, paper-and-pencil psychometric tests are neither convenient nor rapid to perform in the clinic. Recently, novel computerized psychometric tests, including the inhibitory control test, EncephalApp Stroop App, and critical flicker frequency, have been proven to be rapid, effective, and convenient methods for screening MHE in clinical practice and for identifying high-risk cirrhotic patients for further validation using rigid neuropsychometric examinations. However, diagnostic accuracy of these tests is influenced by educational background, age, and cultural differences. This review summarizes clinical evidence of the application of novel computerized psychometric tests for screening MHE.

A Pilot Study of a Screening Tool for Pediatric Minimal Hepatic Encephalopathy

OBJECTIVES

Despite the need for monitoring cognition for minimal hepatic encephalopathy (MHE) in children with portal hypertension, few screening methods exist. The Patient-Reported Outcomes Measurement Information System (PROMIS) Pediatric Perceived Cognitive Function (PedsPCF) item bank, a 43-item parent- and self-report questionnaire, could be a useful screening tool. This study aimed to evaluate the PedsPCF item bank as a screening tool and explore its correlation with other neurocognitive measures and clinical indicators of portal hypertension.

METHODS

Pediatric patients with portal hypertension were recruited at Lurie Children's Liver Clinic. A short battery of neuropsychological tests tapping attention, executive functioning, and fine motor speed was administered along with surveys of cognitive functioning (PedsPCF, Behavior Rating Inventory of Executive Function; BRIEF) and quality of life (PROMIS Pediatric-25 Profile).

RESULTS

Eighteen patients participated (ages 8--17). The PedsPCF correlated well with the BRIEF but did not correlate with neurocognitive testing. Qualitative heatmap analysis of the relationship between z-scores and clinical signs of portal hypertension suggests the PedsPCF is less sensitive than the BRIEF. The fine motor task (Grooved Pegboard) appears to offer the highest sensitivity of the tests administered and is also relatively quick and easy to administer.

CONCLUSIONS

Elements of the battery show promise in this small pilot sample. The BRIEF and the Grooved Pegboard may hold the most potential for screening in the clinical setting. Further study is necessary to examine this question in a larger multicenter sample.