STS National Database
STS U.S. CARDIAC SURGERY DATABASE
1997 MITRAL VALVE REPLACEMENT PATIENTS
UNIVARIATE ANALYSIS: POSTOPERATIVE VARIABLES
PATIENT POPULATION:
OPERATIVE SURVIVORS:
OPERATIVE MORTALITIES:		 4,605
4,345 ( 94.35% )
260 ( 5.65% )
RISK VARIABLE Count % of Pop. Mortality w/ Variable Present Mortality w/ Variable Absent Relative Risk c2 p-Value
Red Blood Cells Used 2,182 47.38% 181 / 2,182 8.30% 79 / 2,423 3.26% 2.54 0.0000
Fresh Frozen Plasma Used 984 21.37% 124 / 984 12.60% 136 / 3,621 3.76% 3.36 0.0000
Cryoprecipitate Used 253 5.49% 41 / 253 16.21% 219 / 4,352 5.03% 3.22 0.0000
Platelets Used 833 18.09% 108 / 833 12.97% 152 / 3,772 4.03% 3.22 0.0000
 
Postop IABP 113 2.45% 19 / 113 16.81% 241 / 4,492 5.37% 3.13 0.0000

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© 1999 The Society of Thoracic Surgeons.