Acidemia does not affect outcomes of patients with acute cardiogenic pulmonary edema treated with continuous positive airway pressure

Table 2 Clinical endpoints of the study population, according to presence or absence of acidemia on admission

Variable	Acidotic group (n= 290, 77%)	Controls (n= 88, 23%)	P value (chi-square test)
Clinical failure	28 (9.7)	8 (9.1)	0.875
Change to bi-level	5 (1.7)	0 (0)	0.215
Change to intubation	6 (2.1)	0 (0)	0.174
ACPE-related mortality^a	6 (2.1)	1 (1.1)	0.484
Late mortality^b	17 (6.0)	7 (8.1)	0.488
In-hospital mortality^b	23 (8.2)	8 (9.3)	0.738
Length of hospital stay (days)	11 ± 6.9	11 ± 6.3	0.617

Data presented as number (%) or mean ± standard deviation. ACPE, acute cardiogenic pulmonary edema. ^aTwo patients censored as by day 1. ^bTen patients censored as by day 1.

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