Univariate Analyses: Intraoperative Variables -- 1997 Canada CAB + AVR -- STS

STS CANADIAN CARDIAC SURGERY DATABASE
1997 CAB + AORTIC VALVE REPLACEMENT PATIENTS
UNIVARIATE ANALYSIS: INTRAOPERATIVE VARIABLES

PATIENT POPULATION:
OPERATIVE SURVIVORS:
OPERATIVE MORTALITIES:

236
219 ( 92.80% )
17 ( 7.20% )

RISK VARIABLE	Count	% of Pop.	Mortality w/ Variable Present		Mortality w/ Variable Absent		Relative Risk	c²p-Value
Blood Cardioplegia	225	95.34%	17/225	7.56%	0/11	0.00%		0.3440
Cryst Cardioplegia	20	8.47%	0/20	0.00%	17/216	7.87%	0.00	0.1928
O₂ Cryst Cardioplegia	9	3.81%	0/9	0.00%	17/227	7.49%	0.00	0.3941
Antegrade Cardioplegia	217	91.95%	15/217	6.91%	2/19	10.53%	0.66	0.5591
Retrograde Cardioplegia	124	52.54%	12/124	9.68%	5/112	4.46%	2.17	0.1219
Warm Cardioplegia	97	41.10%	8/97	8.25%	9/139	6.47%	1.27	0.6043
Cold Cardioplegia	193	81.78%	12/193	6.22%	5/43	11.63%	0.53	0.2146

Inotropes Leaving OR	115	48.73%	8/115	6.96%	9/121	7.44%	0.94	0.8863
Antiarrhy Leaving OR	5	2.12%	1/5	20.00%	16/231	6.93%	2.89	0.2633

Atrial Pacing	85	36.02%	4/85	4.71%	13/151	8.61%	0.55	0.2655
Ventricular Pacing	59	25.00%	4/59	6.78%	13/177	7.34%	0.92	0.8844

Intraop IABP	9	3.81%	5/9	55.56%	12/227	5.29%	10.51	0.0000