Characteristic
Obesity Class
Obesity Class
Obesity Class
p value ⍺ = 0.05
Class I (n = 106) Class II (n = 42) Class III (n = 34)
Baseline Demographics
Age (y) median (IQR) 67 (58-72.75) 67.5 (60-71.75) 67.5 (64-73.75) 0.214
Male n (%) 64 (60.4%) 23 (54.8%) 14 (41.2%) 0.148
Race n (%) 0.327
Caucasian 86 (81.1%) 36 (85.7%) 32 (94.1%)
African American 6 (5.7%) 0 (0.0%) 0 (0.0%)
Asian Other (e.g., Hispanic ethnicity) 2 (1.9%) 12 (11.3%) 0 (0.0) 6 (14.3%) 0 (0.0%) 2 (5.9%)
Clinical Characteristics
Atrial fibrillation n (%) 20 (18.9%) 12 (28.6%) 8 (23.5%) 0.411
Aortic gradient (mmHg) median (IQR) 46.0 (38.0-59.8) 45.0 (41.3-60.3) 45.0 (40.3-49.5) 0.553
Aortic insufficiencya n (%) 0.211
< Moderate 74 (69.8%) 30 (71.4%) 29 (85.3%)
≥ Moderate 32 (30.2%) 12 (28.6%) 5 (14.7%)
Body mass index median (IQR) Congestive heart failure n (%) 32.5 (30.9-33.5) 28 (26.4%) 36.7 (35.7-37.4) 11 (23.2%) 42.7 (40.9-46.8) 15 (44.1%) <0.001 0.134
Prior CVA n (%) 5 (4.7%) 4 (9.5%) 2 (5.9%) 0.473
Cerebrovascular disease n (%) 8 (7.5%) 4 (9.5%) 4 (11.8%) 0.673
Chronic renal failure n (%) 2 (1.9%) 2 (4.8%) 2 (5.9%) 0.310
Cigarette smoking n (%)
History 65 (61.3%) 27 (64.3%) 16 (47.1%) 0.256
Current at time of surgery 8 (7.5%) 2 (4.8%) 2 (5.9%) 0.913
Diabetes mellitus n (%) 35 (33.0%) 14 (33.3%) 19 (55.9%) 0.049
Ejection fraction (%) median (IQR) 60.0 (55.0-63.5) 58.0 (55.0-60.0) 61.5 (58.0-65.0) 0.402
Hypertension n (%) 96 (90.6%) 40 (95.2%) 32 (94.1%) 0.687
Hypercholesterolemia n (%) 91 (85.8%) 40 (95.2%) 30 (88.2%) 0.191
STS PROM score (%) median (IQR) 1.03 (0.70-1.92) 1.39 (0.96-2.22) 1.86 (1.22-2.41) 0.028