Table 4.

Association between the HEAVEN criteria and the intubation attempt >1, and the complications of intubation

HEAVEN criteria	Any complication (n = 24)			Aspiration (n = 12)			Dysrhythmia (n = 5)			Cardiac arrest (n = 7)			Hypoxemia (n = 8)
	n	OR (95% CI)	P-value	n	OR (95% CI)	P-value	n	OR (95% CI)	P-value	n	OR (95% CI)	P-value	n	OR (95% CI)	P-value
Any criteria	24	3.69 (1.33–10.21)	< 0.01a,b)	12	8.56 (1.09–67.37)	0.02c,d)	5	1.63 (0.31–8.67)	0.55c)	7	2.33 (0.47–11.58)	0.27c)	8	2.69 (0.55–13.09)	0.18c)
Hypoxemia	11	7.44 (2.82–19.63)	< 0.01b,c)	1	0.56 (0.07–4.50)	0.55c)	3	5.84 (1.21–28.12)	0.04c,d)	4	6.53 (1.61–26.57)	0.01c,d)	8	42.86 (8.29–221.70)	< 0.01b,c)
Extremes of size	6	0.96 (0.38–2.44)	0.94a)	3	0.91 (0.24–3.46)	0.89c)	1	0.50 (0.60–4.24)	0.49c)	1	0.37 (0.04–3.01)	0.29c)	2	0.75 (0.15–3.68)	0.72c)
Anatomical challenge	18	1.38 (0.51–3.77)	0.53c)	3	1.56 (0.40–6.05)	0.50c)	1	0.83 (0.10–7.14)	0.86c)	1	0.61 (0.07–5.09)	0.63c)	1	0.54 (0.07–4.43)	0.54c)
Vomit/blood/fluid	18	5.55 (2.39–12.92)	< 0.01a,b)	11	16.63 (3.54–78.27)	< 0.01b,c)	4	3.40 (0.73–15.79)	0.12c)	5	3.23 (0.83–12.58)	0.09c)	3	1.04 (0.26–4.17)	0.96c)
Exsanguination	6	1.63 (0.59–4.50)	0.36c)	4	2.81 (0.80–9.91)	0.13c)	0	1.05 (1.01–1.09)	0.13c)	1	0.70 (0.08–5.84)	0.73c)	1	0.62 (0.08–5.09)	0.64c)
Neck mobility	2	0.37 (0.08–1.68)	0.15c)	2	1.04 (0.22–4.98)	0.02c)	0	1.05 (1.01–1.09)	0.13c)	0	1.07 (1.02–1.11)	0.08c)	0	1.07 (1.03–1.12)	0.07c)

OR, odds ratio; CI, confidence interval.

^a)Chi-square test.

^b)P<0.01.

^c)Fisher exact test.

^d)P<0.05.