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Angiographic guidewire with measuring markers: design and clinical experience.

Abstract：

PURPOSE:We have developed an angiographic guidewire with measuring markers to determine accurately how far a guidewire is inserted within a catheter. We investigated whether use of this guidewire reduces the risk of vascular injury and the fluoroscopic time during guidewire manipulations. METHODS:Four markers were put on the surface of the guidewire at 80, 100, 110, and 120 cm from the tip. The actual lengths of 54 catheters from seven manufacturers were measured and compared with the nominal lengths. Sixty consecutive patients who underwent angiography were randomized into two groups: in one group guidewires with surface markers were used (marker group) and in the other group, conventional guidewires (control group). For each guidewire insertion, the fluoroscopic time before the guidewire was pushed forward into the vessel lumen was recorded. The number of occasions on which unintentionally the guidewire had already been pushed out of the catheter at the start of fluoroscopy was also evaluated. RESULTS:The actual lengths of all catheters were greater than the nominal lengths by 1.0-11.0 cm. Mean fluoroscopic time for each guidewire insertion was 3.3 sec in the marker group and 5.7 sec in the control group (p < 0.05). Guidewires were unintentionally pushed out of the catheters without fluoroscopy three times (3.6%), in each case in the control group. CONCLUSION:The guidewire with measuring markers is effective for enhancing safety and in reducing fluoroscopic radiation during angiographic procedures. It is recommended that operators be aware that actual lengths of catheters may vary significantly from the nominal lengths listed; they should be aware of this with any guidewire, but particularly with the angiographic measuring guidewire.

journal_name

Cardiovasc Intervent Radiol

journal_title

Cardiovascular and interventional radiology

authors

Kamei S,Ishiguchi T,Murata K,Matsuda J,Ohno R,Kimura J,Nakamura A,Ohno K,Kawamura T,Ikeda M

doi

10.1007/s00270-005-0294-7

subject

Has Abstract

pub_date

2006-11-01 00:00:00

pages

981-5

issue

6

eissn

0174-1551

issn

1432-086X

journal_volume

29

pub_type

杂志文章,随机对照试验

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