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Introduction: Non-white patients have been reported to face barriers to left atrial appendage occlusion (LAAO). Hypothesis: We hypothesized that white vs. non-white patients would have disparate wait times for and post-procedural treatment course after LAAO. Methods: We identified consecutive patients undergoing LAAO (Watchman TM ) at our institution between November 2015 - March 2020. In white vs. non-white patients, we compared patient characteristics, indications for LAAO, procedural wait time from index event (IE) and cardiology encounter to LAAO procedure, complications, post-procedure anticoagulation regimen, and adherence to 45-day post-procedural transesophageal echocardiogram (TEE). Results: Of 109 consecutive patients receiving LAAO implants, 45% were white (n = 49). White patients were less likely to have prior cerebral vascular accident (14% vs. 43%, p=0.001), heart failure (18% vs. 48%, p=0.001), and end stage renal disease (0% vs. 20%, p Conclusions: Whites and non-whites had similar indications for LAAO, procedural wait time, risk of procedural complications, and adherence to post-procedural TEE, despite a higher burden of co-morbidities. White patients may be more likely to be discharged on oral anticoagulation.

PURPOSE Non-white patients are underrepresented in left atrial appendage occlusion (LAAO) trials, and racial disparities in LAAO periprocedural management are unknown. METHODS We assessed sociodemographics and comorbidities of consecutive patients at our institution undergoing LAAO between 2015 and 2020, then in adjusted analyses, compared procedural wait time, procedural complications, and post-procedure oral anticoagulation (OAC) use in whites versus non-whites. RESULTS Among 109 patients undergoing LAAO (45% white), whites had lower CHA2 DS2 VASc scores, on average, than non-whites (4.0 vs. 4.8, p = .006). There was no difference in median time from index event (IE) or initial outpatient cardiology encounter to LAAO procedure (whites 10.5 vs. non-whites 13.7 months, p = .9; 1.9 vs. 1.8 months, p = .6, respectively), and there was no difference in procedural complications (whites 4% vs. non-whites 5%, p = .33). After adjusting for CHA2 DS2 VASc score, OAC use at discharge tended to be higher in whites (OR 2.4, 95% CI [0.9-6.0], p = .07). When restricting the analysis to those with prior gastrointestinal (GI) bleed, adjusting for CHA2 DS2 VASc score and GI bleed severity, whites had a nearly five-fold odds of being discharged on OAC (OR 4.6, 95% CI [1-21.8], p = 0.05). The association between race and discharge OAC was not mediated through income category (total mediation effect 19% 95% CI [-.04-0.11], p = .38). CONCLUSION Despite an increased prevalence of comorbidities amongst non-whites, wait time for LAAO and procedural complications were similar in whites versus non-whites. Among those with prior GI bleed, whites were nearly five-fold more likely to be discharged on OAC than non-whites, independent of income.

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