Abstract TP584: Higher Prevalence of Congestive Heart Failure (CHF) in Hereditary Hemorrhagic Telangiectasia (HHT) Secondary to Anemia and Artero-venous Malformations (AVMs)

Introduction: Hereditary Hemorrhagic Telangiectasia (HHT) is a genetic disorder with vascular anomalies of various organ systems including the skin, brain, heart, lungs, and liver. While the most commonly recognized disease burden of HHT are epistaxis and mucocutaneous telangiectasia, the development of vascular malformations can result in more severe symptoms such as cerebral hemorrhage, liver cirrhosis, and stroke. Various case reports/series have reported high output cardiac failure, secondary to presence of a single large AVM or multi organ AVMs, as a major cause of morbidity and mortality in HHT population. To the best of our knowledge, this is the first study analyzing the cardiovascular disease burden in HHT patients from a large national database. Methodology: All HHT patients were identified using ICD-9 code 448.0 using the 2014 National Inpatient Sample (NIS) database. Comorbidities - intracerebral hemorrhage (431), cerebrovascular anomaly (747.81), congestive heart failure (428.0), anemia (285.9) were also identified using the ICD-9 coding system. Descriptive and inferential statistical analysis were performed using SAS 2015. Results: A total of 842 HHT patients were identified with relatively older patients having increased prevalence of anemia (29% vs 15%), congestive heart failure (16% vs 8%), intra-cerebral hemorrhage (0.5% vs 0.3%), hypertension (47% vs 42%) compared to general population, respectively. We report HHT to be linked with having higher odds (p < 0.05) of congestive heart failure (1.6 times), chronic pulmonary lung disease (1.7 times), liver disease (3 times), anemia (1.6 times), cerebrovascular anomaly including cerebral AVMs (26 times), and other neurological disorders than patients without HHT, after adjusting for confounders. Conclusion: This is the first database study confirming higher prevalence of CHF in HHT. We infer that chronic anemia and AVM/AVF can cumulatively cause high output congestive heart failure causing increased morbidity and mortality in HHT population especially in advanced ages.