A preoperative mortality risk assessment model for Stanford type A acute aortic dissection

Table 5 Preoperative prediction model

Variable	OR	95% CI	Coefficient & score assigned	P value
Age	1.008	0.985–1.030	0.008	0.510
Abrupt chest pain	3.534	1.872–6.672	1.262	< 0.001
Lac in ABG ≥ 3 mmol/L	3.636	2.047–6.461	1.291	< 0.001
Inotropic support	8.615	4.361–17.019	2.154	< 0.001
Electrocardiographic myocardial ischemia	3.300	1.621–6.718	1.194	0.001
IA involvement	1.625	0.905–2.918	0.486	0.104
RCCA involvement	3.487	1.706–7.127	1.249	0.001
SMA involvement	2.651	1.527–4.602	0.975	0.001
FL/TL of the ascending aorta of ≥ 0.75	2.221	1.238–3.984	0.798	0.007

CI, confidence interval; OR, odds ratio; ABG, arterial blood gas; FL, false lumen; TL, true lumen; RCCA, right common carotid artery; IA, innominate artery; SMA, superior mesenteric artery

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