Table 2.

Baseline Procedural Characteristics of the HV/W Quartiles

Characteristics	HV/W Quartiles				P trend
	Q1 (n=350)	Q2 (n=351)	Q3 (n=366)	Q4 (n=339)
Emergent PCI, n (%)	31 (8.9)	56 (16.0)	76 (20.8)	62 (18.3)	<0.001
No. of lesions	2.1±0.8	2.2±0.9	2.4±0.9	2.6±0.9	<0.001
No. of stents	1.8±1.0	1.9±1.1	2.0±1.1	2.1±1.2	0.042
Total length of stent, mm	45±28	46±30	48±32	51±32	0.059
Procedure duration, min	80±43	84±39	86±41	90±42	0.041
Contrast volume, mL	148±55	153±60	155±64	157±67	0.222

HV/W indicates ratio of hydration volume to body weight; PCI, percutaneous coronary intervention; Q, quartile.