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Table 1 Baseline characteristics of patients, stratified by presence of mechanical valves

From: Cardiac implantable electronic device surgery with interruption of warfarin forgoing post-operative bridging therapy in patients with moderate or high thromboembolic risks

  All patients Mechanical valve No mechanical valve
N = 411 N = 257 N = 154
Age - yr ± S.D. 66.67 ± 11.92 65.56 ± 10.04 65.85 ± 14.56
Age > 65 - no. (%) 208 50.6% 129 50.2% 79 51.3%
Male sex - no. (%) 178 43.3% 90 35.0% 88 57.1%
Medical history - no. (%)
 Rheumatic heart disease 251 61.1% 224 87.2% 27 17.5%
 Mitral stenosis (native valve) 13 3.2% 0 0.0% 13 8.4%
 Tricuspid regurgitation (at least moderate) 156/277 56.3% 111/186 59.7% 45/91 49.5%
 Prior transient ischemic attack 21 5.1% 16 6.2% 5 3.3%
 Prior ischemic stroke 54 13.1% 32 12.5% 22 14.3%
 Prior non-CNS embolic event 3 0.7% 1 0.4% 2 1.3%
 Hypertension 159 38.7% 89 34.6% 70 45.5%
 Diabetes mellitus 100 24.3% 58 22.6% 42 27.3%
 Chronic kidney disease (eGFR< 30 ml/m2) 68 16.5% 35 13.6% 33 21.4%
 Cardiomyopathy 112 27.3% 37 14.4% 75 48.7%
 Coronary artery disease 61 14.8% 19 7.4% 42 27.3%
 Percutaneous coronary intervention 30 7.3% 6 2.2% 24 15.6%
 Coronary-artery bypass surgery 15 3.7% 7 2.7% 8 5.2%
 Left ventricular ejection fraction < 50% 147 35.8% 74 28.8% 73 47.4%
 Left ventricular ejection fraction - percentage point ± S.D 50.75 ± 17.66 53.74 ± 15.92 45.75 ± 19.27
  1. Abbreviation: S.D. standard deviation