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J Invasive Cardiol. 2016 Feb;28(2):67-70.

Transcatheter Aortic Valve Replacement Complication Rates in Teaching Vs Non-Teaching Centers in the United States.

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Department of Cardiovascular Medicine, University of Louisville School of Medicine, 550 S Jackson St, ACB 3rd Floor, Louisville, KY 40202 USA.



The objective of our study is to compare transcatheter aortic valve replacement (TAVR) complication rates among teaching vs non-teaching centers in the United States.


Using National Inpatient Sample (NIS) data, the largest all-payer database of hospital inpatient stay available in the United States, we identified patients (age ≥18 years) who underwent TAVR from January-December 2012. We constructed multivariable models to determine independent predictors (age, sex, race, Charlson's comorbidity index, hospital size, hospital location, and TAVR approach) of TAVR-associated complications.


We identified 7405 TAVR procedures performed in the United States in 2012. In all, 88% of TAVRs were performed in teaching centers. There was no difference in mortality following TAVR between teaching and non-teaching centers. In-hospital complication rate was lower in teaching centers vs non-teaching centers (42% vs. 50%, respectively; P<.001). In adjusted analysis, hemorrhage requiring transfusion (13.2% vs. 20.8%; P<.001), renal complications requiring dialysis (1.2% vs. 2.3%; P<.01), respiratory complications (7.5% vs. 11%; P<.001), and complications requiring open-heart surgery (2% vs. 4.6%; P<.001) were lower in teaching centers vs non-teaching centers. Vascular access-site, pacemaker insertion, pericardial, and neurological complications were similar between teaching and non-teaching centers.


Institutional design impacts TAVR complications, albeit with no difference in mortality. In general, complication rates are lower in teaching centers compared with non-teaching centers.

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