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Trends and Outcomes of Atrial Fibrillation-Flutter Hospitalizations Among Heart Transplant Recipients (From the National Inpatient Sample)

Published:October 10, 2019DOI:https://doi.org/10.1016/j.amjcard.2019.09.038
      Atrial fibrillation-flutter (AF) has been described in 10% to 24% of patients after heart transplant (HT). Data on AF hospitalizations after HT are limited to single-center experiences. To bridge this gap, we performed an analysis of admissions for AF in HT patients from the National Inpatient Sample (NIS) years 2000 to 2014. All hospitalizations with a primary diagnosis of 427.31 or 427.32 and V42.1 were used to identify hospitalizations with AF and previous HT respectively. Among a total of 211,961 HT related hospitalizations, 1,304 (0.62%) (955 males, 349 females, mean age 59 years, median CHA2DS2Vasc score 2 [Interquartile range 1 to 3]) were admitted with a primary diagnosis AF. Most hospitalizations were nonelective (80.17%). In-hospital mortality was 2.3% and the mean length of stay (LOS) was 3.7 days. Among those patients who were discharged from hospital, 85 % were discharged to home with self-care. Most commonly reported secondary diagnoses included hypertension (57.9%), diabetes (33%), renal failure (31.3%), and congestive heart failure (22%). The event rates for ischemic stroke and gastrointestinal bleeding in the same admission with the AF hospitalization were low (1.2% and 1.2% respectively). Cardioversion was performed in 37% and ablation in 11.2% of admissions. The adjusted median cost of hospitalization was $6478.7 (IQR $3561.8 to $12352.3) and did not change significantly during the study period. AF is a relatively infrequent cause of hospitalization among HT recipients. The number of hospitalizations, ablations, cardioversions, disposition, LOS, and cost of hospitalization for AF remained stable during the study period.
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