Table 5.

Quantitative angiographic analysis of the side branch

	Classical crush			DK crush	P Overall classical vs. DK crush
	Overall	Without final kissing balloon	With final kissing balloon
No. of lesions	135	30	105	130
Baseline
RVD (mm)	2·45 ± 0·45	2·45 ± 0·33	2·49 ± 0·48	2·46 ± 0·54	0·5
MLD (mm)	0·84 ± 0·51	0·83 ± 0·55	0·85 ± 0·59	0·84 ± 0·58	0·4
DS (%)	65·7 ± 18·9	62·4 ± 17·5	66·3 ± 19·2	65·4 ± 19·8	0·3
Post-PCI
RVD (mm)	2·85 ± 0·39	2·85 ± 0·36	2·86 ± 0·39	2·88 ± 0·40	0·13
MLD (mm)	2·56 ± 0·42	2·18 ± 0·46	2·59 ± 0·49	2·59 ± 0·45	0·8
DS (%)	19·4 ± 8·7	22·6 ± 9·2	15·5 ± 9·1	14·6 ± 8·7	0·04
Acute gain (mm)	1·45 ± 0·59	1·37 ± 0·57*	1·64 ± 0·55	1·69 ± 0·64	0·01
8-month follow-up
RVD (mm)	2·81 ± 0·41	2·80 ± 0·37	2·83 ± 0·42	2·82 ± 0·54	0·7
MLD (mm)	1·95 ± 0·45	1·52 ± 0·50*	2·24 ± 0·52	2·29 ± 0·71	0·8
DS (%)	38·6 ± 17·5	39·4 ± 17·7*	23·9 ± 14·6	21·2 ± 14·5	0·03
Late loss (mm)	0·48 ± 0·28	0·51 ± 0·39*	0·34 ± 0·23	0·33 ± 0·25	0·04
Restenosis (%)
Overall	24·4	36·6	20·9**	12·3	0·01
Edge†	17·8	33·3	13·3	7·7	0·01
In-stent	6·6	3·3	7·6	4·6	0·08

Abbreviations: RVD, reference vessel diameter; MLD, minimum lumen diameter; DS, diameter stenosis; DK, double kissing.

^*P < 0·001 comparing classical crush without final kissing inflations to both classical crush with final kissing inflations as well as DK crush.

^**P = 0·01 comparing classical crush with final kissing inflations to DK crush.

^†indicates the restenosis at ostial side branch (within 5 mm proximal to side stent).