Association between post-procedural hyperoxia and poor functional outcome after mechanical thrombectomy for ischemic stroke: an observational study

Annals of Intensive Care

Table 3 Study outcomes

Score on the mRS at 90 days	paO₂ ≤ 120 mmHg N = 214	paO₂ > 120 mmHg N = 119	Significance level (p value)
0–1	70 (32.7)	30 (25.2)	0.15
0–2	94 (43.9)	35 (29.4)	< 0.01
0–3	122 (57.0)	47 (39.5)	< 0.01

Primary endpoint	paO₂ ≤ 120 mmHg N = 214	paO₂ > 120 mmHg N = 119	Unadjusted OR value (CI 95%)	Adjusted OR^a value (CI 95%)
mRS ≥ 4 at 90 days	92 (43.0)	72 (60.5)	2.03 (1.29–3.21)	2.27 (1.22–4.23)
mRS ≥ 3 at 90 days	120 (56.1)	84 (70.6)	1.81 (1.12–2.90)	2.07 (1.05–4.09)

Secondary endpoints	paO₂ ≤ 120 mmHg N = 214	paO₂ > 120 mmHg N = 119	Significance level (p value)
Days of stay in ICU	2 (2–4)	3 (2–6)	0.03
NIHSS after IAMT^b	9.5 (3–17)	15 (7–20)	< 0.01

This table value of quantitative variables expressed as median and interquartile range. Values of qualitative variables expressed as n (%)
^aFinal model, adjusted for sex, age, APACHE, NIHSS, mismatch, reperfusion level achieved and orotracheal intubation at ICU admission
^bNIHSS score obtained at 24 h after IAMT