A New and Simple Risk Predictor of Contrast-Induced Nephropathy in Patients Undergoing Primary Percutaneous Coronary Intervention: TIMI Risk Index

Table 1

Comparison of baseline clinical characteristics of patients with and without CIN after PCI.

Variables	CIN (−) ()	CIN (+) ()	value
Age, years	56.8 ± 11.4	66.2 ± 12.3	<0.001
Age > 75	64 (7.7)	35 (27.3)	<0.001
Gender, male, (, %)	660 (79.0)	84 (65.6)	0.001
Diabetes mellitus, (, %)	175 (21)	51 (39.8)	<0.001
Hypertension, (, %)	333 (39.9)	65 (50.8)	0.020
Smoking, (, %)	328 (39.2)	45 (35.2)	0.191
Hyperlipidemia, (, %)	332 (39.8)	43 (33.6)	0.182
Family history of CAD, (, %)	193 (23.1)	32 (25)	0.725
Prior MI, (, %)	89 (10.7)	12 (9.4)	0.659
Prior PCI, (, %)	80 (9.6)	11 (8.6)	0.722
Prior CABG	27 (3.2)	3 (2.3)	0.589
Systolic blood pressure, mmHg	124 ± 41	131 ± 25	0.011
Diastolic blood pressure, mmHg	77 ± 14	81 ± 20	<0.001
Heart rate, (p/min)	76 ± 14	80 ± 20	<0.001
Killip class (≥II), (, %)	104 (12.5)	43 (33.6)	<0.001
LV-EF, %	46.9 ± 7.7	43.2 ± 8.8	<0.001
TRI	32.9 ± 18.8	19.9 ± 9.9	<0.001

Values are expressed as mean ± SD or percentages. CAD, coronary artery disease; MI, myocardial infarction; PCI, percutaneous coronary intervention; CABG, coronary artery bypass graft; LV-EF, left ventricular ejection fraction; TRI, the thrombolysis in myocardial infarction risk index.