Hepatopulmonary syndrome diagnostic study of choice
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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
There is no single diagnostic study of choice for the diagnosis of hepatopulmonary syndrome, but hepatopulmonary syndrome can be diagnosed based on history of liver disease, atrial blood gas analysis (widened alveolar-arterial oxygen gradient measurement); and evidences of intra-pulmonary vascular dilation or arterio-venous communications that result in a right-to-left intrapulmonary shunt.
Diagnostic Study of Choice
Study of choice:
There is no single diagnostic study of choice for the diagnosis of hepatopulmonary syndrome, but hepatopulmonary syndrome can be diagnosed based on history of liver disease, atrial blood gas analysis (widened alveolar-arterial oxygen gradient measurement); and evidences of intra-pulmonary vascular dilation or arterio-venous communications that result in a right-to-left intrapulmonary shunt.[1][2][3]
Investigations:
- Among the patients who present with clinical signs of hepatopulmonary syndrome, the contrast-enhanced transthoracic echocardiography with agitated saline is the most specific test for the diagnosis.[4]
- Among the patients who present with clinical signs of hepatopulmonary syndrome, the atrial blood gas analysis is the most sensitive test for diagnosis.[6]
Diagnostic results
The following findings are confirmatory for hepatopulmonary syndrome: (discussed in details)
- Presence of bubbles on the left heart in contrast-enhanced transthoracic echocardiography with agitated saline [5]
- Presence of radioactivity on the left heart in Technetium 99m-labeled macroaggregated albumin scanning[7]
- Diffusion defect in atrial blood gas analysis particularly studying [8]
- Abnormal liver function studies
- Abnormal pulmonary function test
References
- ↑ Hopkins WE, Waggoner AD, Barzilai B (1992) Frequency and significance of intrapulmonary right-to-left shunting in end-stage hepatic disease. Am J Cardiol 70 (4):516-9. DOI:10.1016/0002-9149(92)91200-n PMID: 1642191
- ↑ Krowka MJ, Fallon MB, Kawut SM, Fuhrmann V, Heimbach JK, Ramsay MA et al. (2016) International Liver Transplant Society Practice Guidelines: Diagnosis and Management of Hepatopulmonary Syndrome and Portopulmonary Hypertension. Transplantation 100 (7):1440-52. DOI:10.1097/TP.0000000000001229 PMID: 27326810
- ↑ 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
- ↑ 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
- ↑ 5.0 5.1 Abrams GA, Jaffe CC, Hoffer PB, Binder HJ, Fallon MB (1995) Diagnostic utility of contrast echocardiography and lung perfusion scan in patients with hepatopulmonary syndrome. Gastroenterology 109 (4):1283-8. PMID: 7557096
- ↑ Castro M, Krowka MJ (1996) Hepatopulmonary syndrome. A pulmonary vascular complication of liver disease. Clin Chest Med 17 (1):35-48. PMID: 8665789
- ↑ Abrams GA, Nanda NC, Dubovsky EV, Krowka MJ, Fallon MB (1998) Use of macroaggregated albumin lung perfusion scan to diagnose hepatopulmonary syndrome: a new approach. Gastroenterology 114 (2):305-10. PMID: 9453490
- ↑ Arguedas MR, Singh H, Faulk DK, Fallon MB (2007) Utility of pulse oximetry screening for hepatopulmonary syndrome. Clin Gastroenterol Hepatol 5 (6):749-54. DOI:10.1016/j.cgh.2006.12.003 PMID: 17392034