Hepatopulmonary syndrome laboratory findings
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Soroush Seifirad, M.D.[2]
Overview
Atrial blood gas analysis (ABG) is used both for diagnosis and evaluating the severity (grade) of hepatopulmonary syndrome.
A variety of laburatory tests might be used for the management and followup of patients with cirrhosis among them are, serum bilirubin levels, aminotransferase levels, alkaline phosphatase, gamma-glutamyl transpeptidase , prothrombin time/INR, complete blood count (CBC), electrolytes, blood urea nitrogen (BUN) and creatinine.
Laboratory Findings
Atrial blood gas analysis (ABG) is used both for diagnosis and evaluating the degree (severity) of the HPS as follows:[1][2]
- Alveolar-arterial oxygen gradient >/= 15 mmHg in room air : The most sensitive measurement of ABG for HPS diagnosis
- Partial pressure of oxygen < 80 mmHg : generally present in sever HPS, late diagnostic finding
- Degree of severity:
- HPS can be classified in term of severity based on atrial blood gas analysis, as follows:
- Mild: Alveolar-arterial oxygen gradient above, or equal to 15mmHg, partial pressure of oxygen 80mmHg.
- Moderate: Alveolar-arterial oxygen gradient 15mmHg, partial pressure of oxygen 60 up to 80mmHg.
- Severe: Alveolar-arterial oxygen gradient 15mmHg, partial pressure of oxygen 50 up to 60mmHg.
- Very severe: Alveolar-arterial oxygen gradient 15mmHg, partial pressure of oxygen below 50 mmHg (< 300mmHg while the patient is breathing 100% oxygen).
Common cirrhosis abnormal laboratory findings are as follows:[3][4][5][6][7]
- Increased serum bilirubin levels[8]
- Abnormal aminotransferase levels [9][5][10][11][12][13][14][15][16][17][18]
- Elevated alkaline phosphatase
- Elevated gamma-glutamyl transpeptidase
- Prolonged prothrombin time/INR
- Thrombocytopenia
- Hyponatremia
References
- ↑ Schenk P, Fuhrmann V, Madl C, Funk G, Lehr S, Kandel O et al. (2002) Hepatopulmonary syndrome: prevalence and predictive value of various cut offs for arterial oxygenation and their clinical consequences. Gut 51 (6):853-9. DOI:10.1136/gut.51.6.853 PMID: 12427789
- ↑ Lima BL, França AV, Pazin-Filho A, Araújo WM, Martinez JA, Maciel BC et al. (2004) Frequency, clinical characteristics, and respiratory parameters of hepatopulmonary syndrome. Mayo Clin Proc 79 (1):42-8. DOI:10.4065/79.1.42 PMID: 14708947
- ↑ Chalasani N, Younossi Z, Lavine JE, Diehl AM, Brunt EM, Cusi K, Charlton M, Sanyal AJ (2012). "The diagnosis and management of non-alcoholic fatty liver disease: practice guideline by the American Gastroenterological Association, American Association for the Study of Liver Diseases, and American College of Gastroenterology". Gastroenterology. 142 (7): 1592–609. doi:10.1053/j.gastro.2012.04.001. PMID 22656328.
- ↑ Udell JA, Wang CS, Tinmouth J, FitzGerald JM, Ayas NT, Simel DL, Schulzer M, Mak E, Yoshida EM (2012). "Does this patient with liver disease have cirrhosis?". JAMA. 307 (8): 832–42. doi:10.1001/jama.2012.186. PMID 22357834.
- ↑ 5.0 5.1 Kwo PY, Cohen SM, Lim JK (2017). "ACG Clinical Guideline: Evaluation of Abnormal Liver Chemistries". Am. J. Gastroenterol. 112 (1): 18–35. doi:10.1038/ajg.2016.517. PMID 27995906.
- ↑ Cabrera-Abreu JC, Green A (2002). "Gamma-glutamyltransferase: value of its measurement in paediatrics". Ann. Clin. Biochem. 39 (Pt 1): 22–5. doi:10.1258/0004563021901685. PMID 11853185.
- ↑ Moussavian SN, Becker RC, Piepmeyer JL, Mezey E, Bozian RC (1985). "Serum gamma-glutamyl transpeptidase and chronic alcoholism. Influence of alcohol ingestion and liver disease". Dig. Dis. Sci. 30 (3): 211–4. PMID 2857631.
- ↑ Krzeski P, Zych W, Kraszewska E, Milewski B, Butruk E, Habior A (1999). "Is serum bilirubin concentration the only valid prognostic marker in primary biliary cirrhosis?". Hepatology. 30 (4): 865–9. doi:10.1002/hep.510300415. PMID 10498635.
- ↑ Pratt DS, Kaplan MM (2000). "Evaluation of abnormal liver-enzyme results in asymptomatic patients". N. Engl. J. Med. 342 (17): 1266–71. doi:10.1056/NEJM200004273421707. PMID 10781624.
- ↑ Ruhl CE, Everhart JE (2010). "Trunk fat is associated with increased serum levels of alanine aminotransferase in the United States". Gastroenterology. 138 (4): 1346–56, 1356.e1–3. doi:10.1053/j.gastro.2009.12.053. PMC 2847039. PMID 20060831.
- ↑ Prati D, Taioli E, Zanella A, Della Torre E, Butelli S, Del Vecchio E, Vianello L, Zanuso F, Mozzi F, Milani S, Conte D, Colombo M, Sirchia G (2002). "Updated definitions of healthy ranges for serum alanine aminotransferase levels". Ann. Intern. Med. 137 (1): 1–10. PMID 12093239.
- ↑ Piton A, Poynard T, Imbert-Bismut F, Khalil L, Delattre J, Pelissier E, Sansonetti N, Opolon P (1998). "Factors associated with serum alanine transaminase activity in healthy subjects: consequences for the definition of normal values, for selection of blood donors, and for patients with chronic hepatitis C. MULTIVIRC Group". Hepatology. 27 (5): 1213–9. doi:10.1002/hep.510270505. PMID 9581673.
- ↑ Kaplan MM (2002). "Alanine aminotransferase levels: what's normal?". Ann. Intern. Med. 137 (1): 49–51. PMID 12093245.
- ↑ Nannipieri M, Gonzales C, Baldi S, Posadas R, Williams K, Haffner SM, Stern MP, Ferrannini E (2005). "Liver enzymes, the metabolic syndrome, and incident diabetes: the Mexico City diabetes study". Diabetes Care. 28 (7): 1757–62. PMID 15983331.
- ↑ Liangpunsakul S, Chalasani N (2012). "What should we recommend to our patients with NAFLD regarding alcohol use?". Am. J. Gastroenterol. 107 (7): 976–8. doi:10.1038/ajg.2012.20. PMC 3766378. PMID 22764020.
- ↑ Cohen JA, Kaplan MM (1979). "The SGOT/SGPT ratio--an indicator of alcoholic liver disease". Dig. Dis. Sci. 24 (11): 835–8. PMID 520102.
- ↑ Schuppan D, Afdhal NH (2008). "Liver cirrhosis". Lancet. 371 (9615): 838–51. doi:10.1016/S0140-6736(08)60383-9. PMC 2271178. PMID 18328931.
- ↑ "EASL Clinical Practice Guidelines: management of cholestatic liver diseases". J. Hepatol. 51 (2): 237–67. 2009. doi:10.1016/j.jhep.2009.04.009. PMID 19501929.