Reported definitions of intraoperative hypotension in adults undergoing non-cardiac surgery under general anaesthesia: a review

Table 4 Definitions of intraoperative hypotension reported in the literature and the prediction of development of adverse postoperative outcomes

Predictors		ß (SE)	Odds ratio (95% confidence interval)	P-value
Type of IOH	Absolute	(Reference)
	Relative	−1.07 (0.35)	0.34 (0.17–0.68)	0.002*
	Combined	−0.10 (0.32)	0.91 (0.49–1.69)	0.752
Agreeable thresholds with POQI statement	Lower	(Reference)
	Agreeable	−1.72 (0.72)	0.18 (0.04–0.73)	0.016*
	Higher	−1.60 (0.72)	0.20 (0.05–0.82)	0.025*
No consideration for the number of epochs and the duration of hypotension		−0.71 (0.20)	0.49 (0.33–0.73)	< 0.001*

*: P < 0.05 by binary logistic regression. -2LL = 393.4, Cox & Snell R² = 0.067, Hosmer and Lemeshow test P = 0.766. IOH Intraoperative hypotension, POQI statement Perioperative Quality Initiative-3 workgroup statement [7]. Absolute: IOH defined by an absolute blood pressure value, Relative: IOH defined by the relative changes from baseline blood pressure, Lower: IOH threshold having lower values compared to POQI statement, Agreeable: IOH thresholds having concordant values to POQI statement, Higher: IOH thresholds having higher values compared to the POQI statement