STS National Database
STS CANADIAN CARDIAC SURGERY DATABASE
1997 MITRAL VALVE REPAIR PATIENTS
UNIVARIATE ANALYSIS: PREOPERATIVE RISK VARIABLES
PATIENT POPULATION:
OPERATIVE SURVIVORS:
OPERATIVE MORTALITIES:		 41
41 ( 100.00% )
0 ( 0.00% )
RISK VARIABLE Count % of Pop. Mortality w/ Variable Present Mortality w/ Variable Absent Relative Risk c2 p-Value
CCS Class II vs. I 0       0/12 0.00%    
CCS Class III vs. I 13 31.71% 0/13 0.00% 0/12 0.00%    
CCS Class IV vs. I 3 7.32% 0/3 0.00% 0/12 0.00%    
 
NYHA Class II vs. I 10 24.39% 0/10 0.00% 0/2 0.00%    
NYHA Class III vs. I 17 41.46% 0/17 0.00% 0/2 0.00%    
NYHA Class IV vs. I 6 14.63% 0/6 0.00% 0/2 0.00%    
 
Aortic Valve Disease 4 9.76% 0/4 0.00% 0/37 0.00%    
Mitral Valve Disease 35 85.37% 0/35 0.00% 0/6 0.00%    
Tricuspid Valve Disease 3 7.32% 0/3 0.00% 0/38 0.00%    
Pulmonic Valve Disease 1 2.44% 0/1 0.00% 0/40 0.00%    
 
Reoperation #1 vs. First Op 4 9.76% 0/4 0.00% 0/36 0.00%    
Multiple Reoperations vs. First Op 1 2.44% 0/1 0.00% 0/36 0.00%    
 
Urgent vs. Elective 5 12.20% 0/5 0.00% 0/36 0.00%    
Emergent vs. Elective 0       0/36 0.00%    
Emergent/Salvage vs. Elective 0       0/36 0.00%    
 
Double Vessel Disease vs. Single 1 2.44% 0/1 0.00%        
Triple Vessel Disease vs. Single 0 0.00%            
 
Left Main Disease 0       0/41 0.00%    
 
Preop IABP 0       0/41 0.00%    
 
Age 61 - 65 vs. Age < 60 10 24.39% 0/10 0.00% 0/19 0.00%    
Age 66 - 70 vs. Age < 60 4 9.76% 0/4 0.00% 0/19 0.00%    
Age 71 - 80 vs. Age < 60 7 17.07% 0/7 0.00% 0/19 0.00%    
Age > 80 vs. Age < 60 1 2.44% 0/1 0.00% 0/19 0.00%    
 
E.F. 45% - 54% vs. E.F. =55% 4 9.76% 0/4 0.00% 0/15 0.00%    
E.F. 35% - 44% vs. E.F. =55% 2 4.88% 0/2 0.00% 0/15 0.00%    
E.F. 25% - 34% vs. E.F. =55% 0       0/15 0.00%    
E.F.< 25% vs. E.F. =55% 0       0/15 0.00%    
E.F. Unknown vs. E.F. =55% 20 48.78% 0/20 0.00% 0/15 0.00%    
 
LVEDP <15 10 24.39% 0/10 0.00% 0/15 0.00%    
LVEDP =15 15 36.59% 0/15 0.00% 0/10 0.00%    
 
PA Sys <30 3 7.32% 0/3 0.00% 0/17 0.00%    
PA Sys =30 17 41.46% 0/17 0.00%
© 1999 The Society of Thoracic Surgeons.