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Table 4 Paired analysis for the first (mean = 43.1 days; median= 7 days) and second (mean=4.3 years; median= 4.4 years) echocardiography investigations performed after surgery

From: Totally biological composite aortic stentless valved conduit for aortic root replacement: 10-year experience

  N valid Mean (SD) Range P25, P50, P75
Aortic root diameter (mm) N = 7    
   First echo post-op   33.4 (2) 30-36 32; 33.7; 35
   Last echo post-op   33.3 (3.1) 29-38 30; 33.5; 3
LVIDd (mm) N = 10    
   First echo post-op   52 (10) 40-68 45.7; 46.4; 62
   Last echo post-op   51 (7.7) 41-64 44; 49; 57
Aortic velocity (m/sg) N = 13    
   First echo post-op   2.1 (0.5) 1.4-3.2 1.6; 2.1;2.5
   Last echo post-op   2.1 (0.7) 0.9-3.8 1.6; 2; 2.3
Aortic max gradient N = 20    
   First echo post-op   18 (10.4) 6-42 10; 15.5; 22.7
   Last echo post-op   16 (12.2) 3.5-59 10.2; 14; 16
Aortic mean gradient N = 18    
   First echo post-op   9.2 (5.2) 3.3-23.3 5.5; 7.8; 11.2
   Last echo post-op   9.7 (6.8) 3-34 6.7; 8; 9.3
Aortic V2 VTI N = 13    
   First echo post-op   32.7 (11.4) 21-62 24; 29; 39.8
   Last echo post-op   38.6 (17) 25-91 28.5; 33; 43.9
  1. Abbreviations: left ventricular internal diameter in diastole - LVIDd; aortic V2 VTI