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Hepatopulmonary syndrome - past to present
Joye Varghese1, Haseeb Ilias-basha, Ravishanker Dhanasekaran
1Medical Gastroenterology, Stanley Medical College Hospital, Chennai, India. joyvargese@gmail.com
Annals of Hepatology
|September 6, 2007
Summary
Hepatopulmonary syndrome (HPS) is a liver cirrhosis complication causing low oxygen levels due to lung blood vessel changes. Liver transplantation offers the best treatment, though medical therapies for HPS are still developing.
Area of Science:
- Hepatology
- Pulmonology
- Internal Medicine
Background:
- Hepatopulmonary syndrome (HPS) is a serious complication of liver cirrhosis and portal hypertension.
- It involves hypoxemia and intrapulmonary vasodilation, impacting gas exchange.
- HPS can also occur in non-cirrhotic portal hypertension and acute liver conditions.
Purpose of the Study:
- To define Hepatopulmonary Syndrome (HPS) and its clinical implications.
- To highlight diagnostic tools and co-existing conditions.
- To discuss current and potential treatment strategies for HPS.
Main Methods:
- Literature review and synthesis of existing knowledge on HPS.
- Identification of diagnostic criteria and clinical signs.
- Evaluation of proposed pathophysiological mechanisms and treatment outcomes.
Main Results:
- HPS is characterized by hypoxemia and intrapulmonary vasodilation in liver disease.
- Contrast echocardiography is a key screening tool for intrapulmonary shunts.
- Digital clubbing, cyanosis, dyspnea, platypnea, and spider nevi are common clinical signs.
- HPS independently worsens the prognosis of liver cirrhosis.
- Nitric oxide and cytokines are implicated in HPS pathogenesis.
Conclusions:
- HPS significantly worsens liver cirrhosis prognosis and requires clinical awareness.
- Liver transplantation is the primary treatment, despite high mortality.
- Effective medical therapies to reverse HPS are still in early development stages.
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