Newly developed self-expandable Niti-S MD colonic metal stent for malignant colonic obstruction

doi:10.4240/wjgs.v12.i4.138

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World Journal of Gastrointestinal Surgery

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1948-9366

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Retrospective Cohort Study

World J Gastrointest Surg. Apr 27, 2020; 12(4): 138-148
Published online Apr 27, 2020. doi: 10.4240/wjgs.v12.i4.138

Table 2 Outcomes in each stent group, Group W, Group N, and Group MD

	Group W	Group N	Group MD	Total
Technical success rate	37/37 (100%)	53/53 (100%)	20/20 (100%)	110/110 (100%)
Stent length
6 cm	24/37 (64.9%)	12/53 (22.6%)	3/20 (15%)	39/110 (35.5%)
8 cm	NA	17/53 (32.1%)	7/20 (35%)	24/110 (21.8%)
9 cm	11/37 (29.7%)	NA	NA	11/110 (10.0%)
10 cm	NA	18/53 (34.0%)	6/20 (30%)	24/110 (21.8%)
12 cm	2/37 (5.4%)	6/53 (11.3%)	4/20 (20%)	12/110 (10.9%)
Stent diameter
18 mm	NA	6/53 (11.3%)	NA	6/110 (5.5%)
22 mm	30/37 (81.1%)	47/53 (88.7%)	20/20 (100%)	97/110 (88.2%)
25 mm	7/37 (18.9%)	NA	NA	7/110 (6.3%)
Procedure time (min, mean ± SD)	32.6 ± 14.0	33.6 ± 23.7	31.3 ± 11.2	33.0 ± 19.1
Clinical success rate	33/37 (89.2%)	51/53 (96.2%)	20/20 (100%)	104/110 (94.5%)
BTS	19/19 (100%)	31/32 (96.9%)	10/10 (100%)	60/61 (98.4%)
PAL	14/18 (77.8%)	20/21 (95.2%)	10/10 (100%)	44/49 (89.8%)
CROSS before stent placement (mean ± SD)	1.6 ± 1.3	1.2 ± 1.0	1.4 ± 0.9	1.4 ± 1.1
0	12/37 (32.5%)	10/53 (18.9%)	3/20 (15%)	25/110 (22.7%)
1	8/37 (21.6%)	32/53 (60.4%)	9/20 (45%)	49/110(44.6%)
2	3/37 (8.1%)	4/53 (7.5%)	5/20 (25%)	12/110 (10.9%)
3	13/37 (35.1%)	5/53 (9.4 %)	3/20 (15%)	21/110 (19.1%)
4	1/37 (2.7%)	2/53 (3.8%)	0/20 (0%)	3/110 (2.7%)
CROSS after stent placement (mean ± SD)	3.8 ± 0.8^a	3.8 ± 0.7^a	3.8 ± 0.5^a	3.8 ± 0.7^a
0	0/37 (0%)	0/53 (0%)	0/20 (0%)	0/110 (0%)
1	3/37 (8.1%)	2/53 (3.8%)	0/20 (0%)	5/110(4.6%)
2	0/37 (0%)	2/53 (3.8%)	1/20 (5.0%)	3/110 (2.7%)
3	0/37 (0%)	0/53 (0 %)	2/20 (10%)	2/110 (1.8%)
4	34/37 (91.9%)	49/53 (92.4%)	17/20 (85%)	110/110 (90.9%)

The CROSS score after stent placement was significantly higher than one before treatment,

^aP < 0.01. BTS: Bridge-to-surgery; PAL: Palliative; CROSS: ColoRectal Obstruction Scoring System; NA: Not available.

Citation: Miyasako Y, Kuwai T, Ishaq S, Tao K, Konishi H, Miura R, Sumida Y, Kuroki K, Tamaru Y, Kusunoki R, Yamaguchi A, Kouno H, Kohno H. Newly developed self-expandable Niti-S MD colonic metal stent for malignant colonic obstruction. World J Gastrointest Surg 2020; 12(4): 138-148
URL: https://www.wjgnet.com/1948-9366/full/v12/i4/138.htm
DOI: https://dx.doi.org/10.4240/wjgs.v12.i4.138