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procedure to post-procedure and maintenance of ABI post-procedure to 9-month follow-up.
Treated vessel patency was high for patients with overlapping stents post-procedure and at
9-month follow-up (100% and 82.4%, respectively). Of those patients with overlapping stents,
imaging was not performed, or was inadequate for assessment, for 13 lesions immediately
post-procedure and for 11 lesions at follow-up. Walking impairment scores, including distance
and speed, improved for patients with overlapping stents from pre-procedure to 1-month
follow-up and pre-procedure to 9-month follow-up. From 1- to 9-month follow-up time
points, patients with overlapping stents had no significant changes in their walking distance
and speed scores. In summary, despite more prevalent comorbid conditions, effectiveness
measures such as acute procedure success, 30-day clinical success, ABIs, patency, and
walking distance and speed scores were improved for patients with overlapping stents. These
measures are summarized in Table 8.
Table 8: Effectiveness Measures for Patients Implanted with Overlapping Zilver
Vascular Stents
Effectiveness
Measure
Pre-Procedure
Post-Procedure One-Month
Nine-Month
Acute Procedure
Success
87.5%
(21/24)
30-day Clinical
Success
91.7% (22/24)
ABI
1
0.65 ± 0.24
(N=24)
0.84 ± 0.28
(N=23)
0.86 ±0.26
(N=23)
0.80 ±0.24
(N=18)
Patency of Stented
Lesion
100% (20/20)
82.4%
(14/17)
Walking Distance
Score
20.7 ± 30.7
(N=24)
53.5 ±43.3
(N=24)
52.8 ± 40.0
(N=17)
Walking Speed
Score
17.2 ± 25.0
(N=20)
55.9 ± 44.3
(N=22)
48.3 ± 42.8
(N=16)
1
N = Number of limbs treated
PRODUCT RECOMMENDATIONS
This product is intended for use by physicians trained and experienced in diagnostic and
interventional vascular techniques. Placement of this vascular stent requires advanced skills
in interventional vascular procedures. The following instructions will give technical guidance,
but do not obviate formal training in the use of the device.
Upon removal from package, inspect the product to ensure no damage has occurred. If it is
suspected that sterility or the integrity of the device has been compromised, it should not be used.
Introducer / Guiding Sheath or Guiding Catheter: See Table 9 for choosing the appropriate
Introducer / Guiding Sheath or Guiding Catheter.
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