Cardiac Surgery Mortality Score in Cardiac Surgery Patients

The Parsonnet score is used to estimate the probability of mortality in patients undergoing cardiac surgery.

Parameters:

(1) gender

(2) age

(3) morbid obesity

(4) diabetes mellitus

(5) hypertension

(6) left ventricular ejection fraction

(7) reoperation or not

(8) preoperative intra-aortic balloon pump

(9) left ventricular aneurysm

(10) emergency surgery

(11) dialysis

(12) catastrophic states

(13) other conditions ("rare circumstances")

(14) mitral valve surgery

(15) aortic valve surgery

(16) CABG at time of valve replacement

Risk Factor	Finding	Weight
gender	female	1
	male	0
age in years	< 70 years of age	0
	70 - 74	7
	75-79	12
	>= 80	20
morbid obesity	>= 1.5 times ideal weight	3
	< 1.5 times ideal weight	0
diabetes mellitus	present	3
	absent	0
hypertension	systolic blood pressure > 140 mm Hg	3
	systolic blood pressure <= 140 mm Hg	0
ejection fraction	good (>= 50%)	0
	fair (30 - 49%)	2
	poor (< 30%)	4
reoperation	none	0
	first	5
	second	10
preoperative intra-aortic balloon pump	present	2
	absent	0
left ventricular aneurysm	present	5
	absent	0
emergency surgery	following PTCA or catheterization complication	10
	absent	0
dialysis	hemodialysis or peritoneal	10
	absent	0
catastrophic states	such as acute structural defect, cardiogenic shock, acute renal failure, other conditions	10 - 50
	absent	0
other rare circumstances	such as paraplegia, pacemaker dependency, congenital heart disease in adult, severe asthma, or other condition	2 - 10
	absent	0
mitral valve surgery	absent	0
	with pulmonary artery pressure < 60 mm Hg	5
	with pulmonary artery pressure >= 60 mm Hg	8
aortic valve surgery	absent	0
	with pressure gradient < 120 mm Hg	5
	with pressure gradient >= 120 mm Hg	7
CABG at time of valve surgery	present	2
	absent	0

predicted probability of operative mortality =

= MIN(100,SUM (points for all of the parameters))

Interpretation:

• minimum score: 0

• maximum score: 100

• The higher the score the higher the perioperative mortality.

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Parsonnet Score in Cardiac Surgery Patients