Preoperative Risk Score of Allou et al for Pneumonia Following Cardiac Surgery

Description

Allou et al developed a simple score for identifying a patient at risk for postoperative pneumonia following cardiac surgery. This can help to identify a patinet who may benefit from more aggressive management. The author are from CHU Bichat-Claude Bernard, Universite Paris VII, and Universite Paris Diderot in Paris.

Patient selection: adult undergoing cardiac surgery

Parameters:

(1) age in years

(2) chronic obstructive pulmonary disease (COPD)

(3) preopeartive left ventricular ejection fraction in percent (LVEF)

Parameter	Finding	Points
age in years	<= 70 years	0
	> 70 years	2
COPD	absent	0
	present	3
preoperative LVEF	>= 60%	0
	< 60%	1

total score =

= SUM(points for all 3 parameters)

Interpretation:

• minimum score: 0

• maximum score: 6

• The higher the score the greater the risk of postoperative pneumonia.

Score	Risk Group	Percent Pneumonia
0 to 2	low	1.8 to 2.4%
3 to 6	high	6.1 to 7.2%

Performance:

• The area under the ROC curve is 0.67.

(Blood transfusion during surgery) AND (cardiopulmonary bypass time greater than 60 minute)s had an odds ratio of 3 for postoperative pneumonia but is not known prior to surgery.

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Preoperative Risk Score of Allou et al for Pneumonia Following Cardiac Surgery

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