5-Year Experience of In-Hospital Outcomes After Percutaneous Left Atrial Appendage Closure in Germany

The aim of this study was to evaluate 5-year in-hospital trends and safety outcomes of left atrial appendage (LAA) closure in the German nationwide inpatient sample.

The safety and efficacy of percutaneous LAA closure have been demonstrated in randomized trials and prospective cohort studies, but results from large samples are missing.

Data on patient characteristics and in-hospital safety outcomes for all percutaneous LAA closures performed in Germany between 2011 and 2015 were analyzed. Overall, 15,895 inpatients were included.

The annual number of LAA occlusions increased from 1,347 in 2011 to 4,932 in 2015 (β = 1.00; 95% confidence interval [CI]: 0.95 to 1.01; p < 0.001), with a nonsignificant uptrend of in-hospital mortality (from 0.5% in 2011 to 0.9% in 2015; β = 0.01; 95% CI: -0.09 to 0.32; p = 0.271). Patient characteristics shifted toward older age and higher prevalence of comorbidities such as heart failure, chronic obstructive pulmonary disease, and chronic renal insufficiency over time. Important independent predictors of in-hospital mortality were cancer (odds ratio [OR]: 2.49; 95% CI: 1.00 to 6.12; p = 0.050), heart failure (OR: 2.42; 95% CI: 1.72 to 3.41; p < 0.001), stroke (OR: 5.39; 95% CI: 2.76 to 10.53; p < 0.001), acute renal failure (OR: 13.28; 95% CI: 9.08 to 19.42; p < 0.001), pericardial effusion (OR: 5.65; 95% CI: 3.76 to 8.48; p < 0.001), and shock (OR: 45.11; 95% CI: 31.01 to 65.58; p < 0.001).

The use of percutaneous LAA closure increased 3.6-fold from 2011 to 2015, with a nonsignificant uptrend of in-hospital mortality rate in this real-world setting. Important predictors of in-hospital death were acute renal failure, pericardial effusion, and ischemic stroke during hospitalization.