Diagnostic utility of B-type natriuretic peptide in critically ill patients with pulmonary edema: a prospective cohort study

Table 2 Mean BNP values and receiver operating characteristic analysis by subgroup

Patients	n		BNP^b (pg/ml)		P	AUC
	ALI/ARDS	CHF	ALI/ARDS	CHF
All	33	21	369 (87–709)	600 (352–1,300)	0.04	0.67 (0.52–0.81)
Serum creatinine < 3.0 mg/dl	32	16	359 (86–665)	653 (419–1,300)	0.02	0.70 (0.55–0.86)
Unanimous jury	31	19	369 (86–665)	653 (419–1,300)	0.05	0.67 (0.52–0.82)
Excluding the four ALI/ARDS with LVD^a	29	21	394 (87–864)	600 (352–1,300	0.06	0.67 (0.52–0.82)

BNP, B-type natriuretic peptide; ALI, acute lung injury; ARDS, acute respiratory distress syndrome; CHF, congestive heart failure; AUC, area under curve. P values are for comparisons of BNP values between ALI/ARDS and CHF patients.
^aLeft ventricular dysfunction on recent echocardiogram (stable or improved in all four patients); ^bmedian (interquartile range).

ISSN: 1364-8535