Risk Assessment of Bernstein and Parsonnet Prior to Cardiac Surgery: Basic Risk Subscore

Description

Bernstein and Parsonnet developed a model for predicting the risk of cardiac surgery. This consists of a subscore for core risk factors and a subscore for special risk factors. The authors are from Newark Beth Israel Medical Center in New Jersey.

Patient selection: prior to cardiac surgery

Parameters:

(1) age in years

(2) sex

(3) congestive heart failure

(4) COPD

(5) diabetes

(6) ejection fraction in percent

(7) hypertension (> 140/90 mm Hg; history of; taking antihypertensive medications)

(8) left-main coronary artery stenosis

(9) body weight and morbid obesity

(10) preoperative intra-aortic balloon pump (IABP)

(11) reoperation

(12) proposed procedure

Parameter	Finding	Points
age in years	< 70 years	0
	70 to 75 years	2.5
	76 to 79 years	7
	>= 80 years	11
sex	male	0
	female	6
congestive heart failure	no	0
	yes	2.5
COPD	none to moderate	0
	severe	6
diabetes	no	0
	yes	3
ejection fraction	>= 50%	0
	30 to 49%	6.5
	< 30%	8
hypertension	no	0
	yes	3
left main coronary artery stenosis	< 50%	0
	>= 50%	2.5
body weight	<= 1.5 times ideal weight	0
	> 1.5 times ideal weight	1
preoperative IABP	no	0
	yes	4
reoperation	none	0
	first reoperation	10
	two or more reoperation	20
proposed procedure	aortic valve	0
	mitral valve	4.5
	valve and aortocoronary bypass	6
	other	0

subscore for core risk factors =

= SUM(points for all of the risk factors)

Interpretation:

• minimum score: 0

• maximum score: 73

• The higher the subscore the greater the risk.

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Risk Assessment of Bernstein and Parsonnet Prior to Cardiac Surgery: Basic Risk Subscore

Description

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