Research Article
Temporal Trends in Internal vs. External Referrals for TAVR in a Large Academic Center: Patients Characteristics and Outcomes
Table 1
Patient characteristics of 491 consecutive patients undergoing TAVR at a single institution.
| | | All | Internal | External | Others | value | | N/% | 250 | 210 | 31 |
| | Age (years) | 80.5 | 81 | 80 | 73 | 0.51 | | Male | 51% | 52% | 53% | 29% | 0.90 | | White | 81% | 80% | 81% | 84% | 0.89 | | Black | 15% | 15% | 16% | 13% | 0.87 | | Private insurance | 66% | 73% | 60% | 55% | <0.01 | | Peripheral arterial disease | 20.4% | 20% | 21% | 16% | 0.88 | | Smoker | 9.8% | 8% | 10% | 13% | 0.56 | | Hypertension | 89.2% | 88% | 91% | 87% | 0.34 | | Diabetes | 39.1% | 38% | 40% | 39% | 0.73 | | Dialysis | 4.5% | 4% | 3% | 16% | 0.74 | | Home oxygen | 7.9% | 6% | 10% | 6% | 0.16 | | Hostile chest | 2.9% | 2% | 3% | 6% | 0.70 | | Immunosuppression | 4.9% | 6% | 3% | 6% | 0.18 | | Prior myocardial infarction | 13.0% | 12% | 15% | 9% | 0.42 | | Porcelain aorta | 2.6% | 4% | 1% | 3% | 0.07 | | Atrial fibrillation/flutter | 34.0% | 34% | 34% | 26% | 1.00 | | STS Risk score | 5.5 | 5.7 | 5.4 | 4.2 | 0.53 | | Body mass index | 28.8 | 26.4 | 27 | 27 | 0.38 | | NYHA class III + IV | 76% | 76% | 76% | 66% | 1.00 | | Preprocedure hemoglobin | 12.0 | 12.1 | 12.1 | 11.8 | 0.74 | | Preprocedure creatinine | 1.08 | 1.03 | 1.04 | 0.8 | 0.19 | | % Ejection fraction <40% | 16% | 0% | 20% | 3% | <0.01 | | Moderate or severe aortic insufficiency | 17% | 18% | 15% | 20% | 0.45 | | Bicuspid aortic valve | 4% | 5% | 3% | 3% | 0.34 | | Peak velocity (meter/second) | 4.06 | 4.01 | 4.09 | 4.27 | 0.29 | | Annulus size (mm) | 24.6 | 24.6 | 24.6 | 23.8 | 1.00 | | Aortic valve area (cm2) | 0.74 | 0.74 | 0.73 | 0.81 | 0.52 | | Aortic valve gradient (peak) | 41.8 | 40.5 | 43.1 | 43.3 | 0.03 |
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The value is in reference to comparison between internal and external referrals. |
