Table 1 Milrinone serum concentration for infusion rates 0.25 and 0.5 µg/kg/min.

Milrinone dose (µg/kg/min)	n	Age (h)	Mean Time from starting infusion (h)	Milrinone serum concentration (ng/ml) mean ± SD
0.25	8	9	6	112±49
		24	21	336±87
		26	23	245±99
		30	27	216±54
0.5	11	9	6	227±56
		24	21	432±183
		26	23	389±159
		30	27	347±87