Table 1.

Patient profiles

		Control group (n = 46)	HF group (n = 15)	Pearson's chi squares test
		n (%)	n (%)	P value
Sex	Female	21 (46)	5 (33)
	Male	25 (54)	10 (67)	0.44
				Mann-Whitney U test
Scores	PRISM III	37 (14 to 90)	35 (17 to 51)	0.29
	PELOD	628(492 to 694)	633 (551 to 651)	0.93
	OI	20 (1 to 30)	20 (10 to 20)	0.82
	AaDO2	25 (14 to 39)	20 (14 to 40)	0.18
				Pearson's chi squared test
Start ECMO	Oct 2002 to Aug 2004	38 (83)	0(0)
	Aug 2004 to July 2006	8 (17)	15 (100)	-
Diagnosis	CDH	16 (35)	3 (20)
	MAS*	16 (35)	5 (33)
	Respiratory diseases	7 (15)	2(13)
	Sepsis	4 (9)	2 (14)
	Idiopathic PPHN	2 (4)	2 (13)
	Post-cardiac surgery	1 (2)	1 (7)	0.73
Surgery	No surgery	42(91)	12 (80)
	CDH closure	3 (7)	2 (13)
	Great vessel surgery	1 (2)	1 (7)	0.24
ECMO mode	Veno-arterial	44 (96)	13 (87)
	Veno-venous	2 (4)	2 (13)	0.22
		median (min to max)	median (min to max)
Body weight (kg)		3.3 (1.9 to 5)	3.5 (2.5 to 5)	0.31
Age (days)		1.7 (0.5 to 18)	2.2 (0.9 to 6.7)	0.28

Values are presented as mean (interquartile range). * One patient died on ECMO.

AaDO2 = alveolar-arterial oxygen tension gradient; CDH = congenital diaphragmatic hernia; ECMO = extracorporeal membrane oxygenation; HF = haemofiltration; MAS = meconium aspiration syndrome; OI = Oxygenation Index; PELOD = pediatric logistic organ dysfunction; PPHN = persistent pulmonary hypertension of the neonate; PRISM = Pediatric Risk of Mortality Score.