Pre-operative risk scores for the prediction of outcome in elderly people who require emergency surgery

Table 4 Mortality risk from perforated peptic ulcer according to Boey et al ³², and Irvin³³

Risk Factors	No. of Risk Factors	Risk of Mortality
		Boey	Irvin
	0	0	11%
Preoperative BP < 100 mmHg	1	10%	27%
Delayed presentation > 24 h	2	45.5%	55%
Major medical illness present	3	100%	100%

ISSN: 1749-7922