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  • Title: Screening of hepatopulmonary syndrome (HPS) with CEUS and pulse-oximetry in liver cirrhosis patients eligible for liver transplant.
    Author: Suceveanu AI, Mazilu L, Tomescu D, Ciufu N, Parepa IR, Suceveanu AP.
    Journal: Chirurgia (Bucur); 2013; 108(5):684-8. PubMed ID: 24157113.
    Abstract:
    BACKGROUND AND AIM: The prevalence of hepatopulmonary syndrome (HPS) in the setting of cirrhosis ranges between 4%-47%. We aimed to detect a correlation between heart and lungs findings on contrast-enhanced ultrasound (CEUS)and pulse-oximetry, in order to early detect HPS and thus to improve patients referral to orthotopic liver transplantation(OLT). METHODS: We considered at risk for HPS all patients with delayed left ventricle (LV) enhancement of the contrast agent,at least 3 systolic beats after it appears in the right ventricle(RV). We correlated CEUS results with pulse-oximetry findings,considering to have a positive HPS diagnosis in all patients with both CEUS findings and SaO2 95%. RESULTS: From 186 patients diagnosed with liver cirrhosis, 56 patients (30.10%) had delayed LV enhancement of the contrast agent. Pulse-oximetry showed alterations, such as SaO2 95%and PaO2 70 mmHg in 62 patients (33.33%). Pearson index showed a good correlation between lung and heart CEUS findings and pulse-oximetry (r=0.99) in HPS diagnosis. CONCLUSIONS. Two non-invasive, simple and rapid methods such as CEUS and pulse-oximetry can easily diagnose HPS, a highly fatal complication of liver cirrhosis, and can also guide the future treatment by speeding up OLT recommendations.
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