Univariate Analyses: Intraoperative Variables -- 1997 Canada MVR -- STS

STS CANADIAN CARDIAC SURGERY DATABASE
1997 MITRAL VALVE REPLACEMENT PATIENTS
UNIVARIATE ANALYSIS: INTRAOPERATIVE VARIABLES

PATIENT POPULATION:
OPERATIVE SURVIVORS:
OPERATIVE MORTALITIES:

171
164 ( 95.91% )
7 ( 4.09% )

RISK VARIABLE	Count	% of Pop.	Mortality w/ Variable Present		Mortality w/ Variable Absent		Relative Risk	c²p-Value
Blood Cardioplegia	164	95.91%	5/164	3.05%	2/7	28.57%	0.11	0.0008
Cryst Cardioplegia	6	3.51%	1/6	16.67%	6/165	3.64%	4.58	0.1136
O₂ Cryst Cardioplegia	1	0.58%	0/1	0.00%	7/170	4.12%	0.00	0.8358
Antegrade Cardioplegia	163	95.32%	6/163	3.68%	1/8	12.50%	0.29	0.2190
Retrograde Cardioplegia	88	51.46%	1/88	1.14%	6/83	7.23%	0.16	0.0445
Warm Cardioplegia	76	44.44%	1/76	1.32%	6/95	6.32%	0.21	0.1011
Cold Cardioplegia	141	82.46%	6/141	4.26%	1/30	3.33%	1.28	0.8170

Inotropes Leaving OR	82	47.95%	7/82	8.54%	0/89	0.00%		0.0049
Antiarrhy Leaving OR	2	1.17%	1/2	50.00%	6/169	3.55%	14.08	0.0010

Atrial Pacing	58	33.92%	3/58	5.17%	4/113	3.54%	1.46	0.6100
Ventricular Pacing	53	30.99%	2/53	3.77%	5/118	4.24%	0.89	0.8875

Intraop IABP	0				7/171	4.09%