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Erythrocyte ammonia in liver disease
Scandinavian Journal of Gastroenterology
|January 1, 1983
Summary
Erythrocyte ammonia levels are a more reliable indicator of portal-systemic encephalopathy (PSE) than plasma ammonia in liver disease patients. This finding helps in better diagnosing PSE compared to traditional plasma ammonia tests.
Area of Science:
- Biochemistry
- Hepatology
- Clinical Diagnostics
Background:
- Liver disease can lead to complications like portal-systemic encephalopathy (PSE).
- Accurate biochemical markers are crucial for diagnosing PSE.
- Plasma ammonia is a commonly used but potentially limited marker for PSE.
Purpose of the Study:
- To compare the diagnostic relevance of plasma and erythrocyte ammonia concentrations in patients with liver disease.
- To determine if erythrocyte ammonia is a more sensitive indicator of PSE than plasma ammonia.
Main Methods:
- Studied three groups: normal subjects, liver disease patients, and PSE patients.
- Measured plasma and erythrocyte ammonia concentrations in all subjects.
- Utilized the Mann-Whitney U-test for statistical analysis.
Main Results:
- Erythrocyte ammonia showed a significant difference between normal subjects and liver disease patients (p<0.05).
- Both plasma and erythrocyte ammonia were significantly elevated in PSE patients (p<0.001).
- Erythrocyte ammonia levels in PSE patients were distinct from normal and liver disease groups, unlike plasma ammonia.
Conclusions:
- Erythrocyte ammonia measurement is a superior biochemical index for diagnosing PSE compared to plasma ammonia.
- A cut-off level of 65 mumol/l for erythrocyte ammonia can effectively differentiate PSE from other liver disease states.