Arozullah respiratory failure index in adult males

Arozullah respiratory failure index^[1]
Preoperative predictor		Point value
Type of surgery
Abdominal aortic aneurysm		27
Thoracic		21
Neurosurgery, upper abdominal, peripheral vascular		14
Neck		11
Other		0
Emergency surgery		11
Albumin <3.0 g/dL		9
BUN >30 mg/dL		8
Partially or fully dependent functional status		7
History of chronic obstructive pulmonary disease		6
Age
≥70 years		6
60 to 69 years		4
<60 years		0
Predicting likelihood of respiratory failure based on total points
Class	Point total	Percent respiratory failure
1	≤10	0.5
2	11 to 19	1.8
3	20 to 27	4.2
4	28 to 40	10.1
5	>40	26.6

References:

Arozulla AM, Daley J, Henderson WG, Khuri SF. Multifactorial risk index for predicting postoperative respiratory failure in men after major noncardiac surgery. The National Veterans Administration Surgical Quality Improvement Program. Ann Surg 2000; 232:242. Copyright © 2000 American Surgical Association and European Surgical Association. Reproduced with permission from Wolters Kluwer Health. Unauthorized reproduction of this material is prohibited.

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