Table 4

In-hospital adverse events of patients with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI) during 2011–2014

	2011		2012		2013		2014		P values trend
	(n=30 800)		(n=34 974)		(n=39 361)		(n=39 361)
	n	‰	n	‰	n	‰	n	n ‰
Complication	496	16.1	539	15.4	429	10.9	256	6.5	<0.0001
During procedure*	342	11.1	334	9.5	269	6.8	151	3.8	<0.0001
Slow flow	201	6.5	168	4.8	159	4.0	87	2.2	<0.0001
Serious dissection	71	2.3	75	2.1	64	1.6	32	0.8	<0.0001
Acute thrombosis	54	1.8	48	1.4	36	0.9	23	0.6	<0.0001
Perforation	22	0.7	32	0.9	17	0.4	17	0.4	<0.05
Cardiac tamponade	11	0.4	17	0.5	9	0.2	7	0.2	<0.05
Acute occlusion	11	0.4	24	0.7	19	0.5	12	0.3	0.38
Post-procedure	154	5.0	205	5.9	160	4.0	105	2.7	<0.0001
Acute/subacute ST	46	1.5	49	1.4	37	0.9	30	0.8	<0.001
Organ failure	37	1.2	31	0.9	29	0.7	19	0.5	<0.001
Organ support	8	0.3	2	0.0	7	0.2	3	0.0	0.15
Major bleeding/haematoma	19	0.6	19	0.5	23	0.6	6	0.2	<0.01
Organ bleeding	14	0.5	21	0.6	11	0.3	11	0.3	0.06
Postoperative MI	10	0.3	20	0.6	14	0.4	7	0.2	0.10
Contrast reaction	7	0.2	10	0.3	3	0.0	2	0.0	<0.01
Postoperative infection	5	0.2	6	0.2	8	0.2	3	0.0	0.40
Thromboembolism	4	0.1	11	0.3	2	0.0	2	0.0	<0.05
Emergent surgery	4	0.1	2	0.0	1	0.0	2	0.0	0.18
Others	28	0.9	56	1.6	43	1.1	26	0.7	0.06
Death	166	5.4	179	5.1	150	3.8	113	2.9	<0.0001
During PCI	41	1.3	30	0.9	22	0.6	16	0.4	<0.0001
Cardiogenic
Yes	34	1.1	25	0.7	16	0.4	16	0.4	<0.0001
No	1	0.0	1	0.0	2	0.0	0	0.0	0.52
Uncertain	6	0.2	4	0.1	4	0.1	0	0.0	<0.05
PCI related
Yes	4	0.1	1	0.0	1	0.0	4	0.1	0.76
No	23	0.7	15	0.4	11	0.3	11	0.3	<0.01
Uncertain	14	0.5	14	0.4	10	0.3	1	0.0	<0.001
Post-PCI	125	4.1	149	4.3	128	3.2	97	2.5	<0.0001
Cardiogenic
Yes	102	3.3	108	3.1	108	2.7	82	2.1	<0.01
No	10	0.3	22	0.6	8	0.2	9	0.2	0.08
Uncertain	13	0.4	19	0.5	12	0.3	6	0.2	<0.05
PCI related
Yes	4	0.1	5	0.1	7	0.2	8	0.2	0.40
No	88	2.9	120	3.4	100	2.5	80	2.0	<0.01
Uncertain	33	1.1	24	0.7	21	0.6	9	0.2	<0.0001

MI, myocardial infarction; ST, stent thrombosis.