The characteristics of blood transfusion and analysis of preoperative factors associated with intraoperative blood transfusion in congenital heart surgery: a case–control study

Table 3 Single factor analysis of RBCs, platelets, and plasma transfused dosages in pediatric CHS under CPB

Factors	Red blood cells				Platelets				Plasma
Factors	Used	Unused	χ²	P value	Used	Unused	χ²	P value	Used	Unused	χ²	P value
Gender
Male	350	384	1.592	0.207	8	726	0.732	0.392	475	259	6.143	0.013
Female	363	453			13	803			478	338
Weight (kg)
< 10	490	58	643.271	< 0.001	17	532	19.271	< 0.001	483	65	254.327	< 0.001
≥ 10	223	779			4	996			470	532
Age (year)
< 2	607	164	661.547	< 0.001	16	757	5.899	0.015	622	149	238.573	< 0.001
≥ 2	106	673			5	772			331	448
RACHS method
RS1	161	515	255.525	< 0.001	2	674	41.567	< 0.001	277	399	235.573	< 0.001
RS2	478	299			8	769			586	191
RS3	67	22			8	81			82	7
RS4	7	1			3	5			8	0
Hemoglobin (g/L)
< 120	450	253	168.014	< 0.001	1	695	13.865	< 0.001	486	217	31.779	< 0.001
≥ 120	263	584			20	834			467	380
RBC counts (10¹²/L)*
< 3.5	70	2	79.754	< 0.001	6	68	21.477	< 0.001	63	9	21.581	< 0.001
≥ 3.5	643	835			15	1461			890	588
HCT (%)
< 0.37	490	397	71.311	< 0.001	9	878	1.796	0.18	569	318	6.219	0.013
≥ 0.37	223	440			12	651			384	279
PLT counts (10⁹/L)*
<100	5	1	2.039	0.153	1	7	1.442	0.23	5	1	0.465	0.495
≥ 100	708	836			20	1522			948	596
WBC counts (10⁹/L)*
< 4.3	8	8	0.104	0.747	1	18	0.235	0.628	9	7	0.187	0.665
≥ 4.3	705	829			20	1511			944	590
APTT (s)
< 34.6	586	778	42.237	< 0.001	16	1341	1.574	0.21	812	547	14.004	< 0.001
≥ 34.6	127	59			5	188			141	50
PT (s)
< 13.2	649	815	29.603	< 0.001	16	1441	8.985	0.003	880	579	14.331	< 0.001
≥ 13.2	64	22			5	88			73	18
TP (g/L)
< 60	248	47	212.556	< 0.001	11	305	11.502	0.001	249	65	52.776	< 0.001
≥ 60	465	790			10	1224			704	532
ALB (g/L)
< 35	37	20	8.521	0.004	5	73	11.976	0.001	39	37	3.489	0.062
≥ 35	676	817			16	1456			914	560

CHS congenital heart surgery, CPB cardiopulmonary bypass, RACHS risk adjustment for congenital heart surgery, RBC red blood cells, HCT hematocrit, PLT platelets, WBC white blood cells, APTT activated partial thromboplastin time, PT partial thromboplastin time, Alb albumin, TP total protein

ISSN: 1749-8090