Table 2.

Laboratory values according to time point and platelet transfusion.

Laboratory test	Time point	No platelet transfusion		Platelet transfusion
		Median (IQR)	P-value	Median (IQR)	P-value
TEG-PM ADP MA (mm)	Pre-operative	43.8 (33.1, 55.2)	<0.005	17.5 (9.7, 42.0)	0.6
	Intra-operative	13.4 (7.5, 31.6)		8.0 (6.0, 16.1)
	Post-operative	17.8 (7.1, 29.8)		12.1 (6.9, 21.9)
	24 h post-operative	26.8 (10.1, 34)		16.1 (3.7, 36.8)
TEG-PM AA MA (mm)	Pre-operative	56.6 (52.1, 60.4)	<0.005	44.9 (23.3, 63.1)	0.82
	Intra-operative	42.1 (30.4, 50.5)		39.5 (11.5, 51.4)
	Post-operative	39.1 (26.6, 48.6)		39.2 (30.5, 50.3)
	24 h post-operative	25.2 (14.2, 34)		36.7 (12.5, 60)
TEG-PM ADP percent inhibition	Pre-operative	39 (16.6, 55.8)	<0.005	78.5 (39.4, 88.6)	0.114
	Intra-operative	81.3 (59.1, 95)		93 (72.8, 98.3)
	Post-operative	85 (53, 99.1)		94.1 (82.2, 100)
	24 h post-operative	69.8 (57.2, 98.6)		85.7 (40.9, 100)
TEG-PM AA percent inhibition	Pre-operative	12 (3.6, 21.9)	0.006	16.1 (11, 48.4)	0.08
	Intra-operative	26.7 (15.8, 48.6)		39.8 (25.7, 65.3)
	Post-operative	32 (17.4, 54.5)		43.5 (32.6, 66.6)
	24 h post-operative	69.8 (25.7, 88.9)		52.7 (16, 90.2)
MEIA ADP (AUC)	Pre-operative	45 (33, 57.75)	0.006	48 (34, 54)	0.006
	Intra-operative	17.5 (10.3, 37.8)		16 (11, 26)
	Post-operative	35.5 (24.3, 53.3)		29 (16, 32)
	24 h post-operative	37.5 (26.3, 58)		36 (31, 41)
MEIA AA (AUC)	Pre-operative	59 (41, 68.5)	<0.005	45 (32, 74)	0.05
	Intra-operative	19.5 (11.3, 37.3)		20 (15, 34)
	Post-operative	38 (30.5, 49.8)		31 (27, 58)
	24 h post-operative	23.5 (17, 34.5)		26 (21, 39)

CPB, cardiopulmonary bypass; TEG-PM, thromboelastography with platelet mapping; ADP, adenosine diphosphate receptor; AA, arachidonic acid receptor; MEIA, multiple electrode impedance aggregometry; AUC, area under the curve.