2005
DOI: 10.1038/sj.jp.7211355
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The Cobweb Sign: Percutaneous Silastic Long Line Tip Placement in Tributaries of Superficial Veins

Abstract: We report a method for preventing misplacement of percutaneous silastic catheters in superficial vein tributary or venous plexus. Catheters inserted less than the length calculated by surface anatomy measurement due to resistance were studied in three patients. Contrast X-rays (Omnipaque, Nycomed Imaging AS, Oslo, Norway) of the catheters was performed to confirm the catheter tip placement position. On initial assessment, the catheter tip placement was thought to be satisfactory and infusion of TPN commenced. … Show more

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Cited by 5 publications
(3 citation statements)
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“…This complication is very common in clinical practice. If the catheter is difficult to thread or to insert to the premeasured depth, blood withdrawal is difficult, the catheter flushes with resistance or removal of the stylet is difficult, this is an indication that malpositioning may have occurred (9). An X-ray examination following PICC insertion is necessary to identify whether the catheter is misplaced.…”
Section: Discussionmentioning
confidence: 99%
“…This complication is very common in clinical practice. If the catheter is difficult to thread or to insert to the premeasured depth, blood withdrawal is difficult, the catheter flushes with resistance or removal of the stylet is difficult, this is an indication that malpositioning may have occurred (9). An X-ray examination following PICC insertion is necessary to identify whether the catheter is misplaced.…”
Section: Discussionmentioning
confidence: 99%
“…Some signs might indicate suspicious malposition, which include: (i) the catheter is difficult to thread; (ii) the catheter is difficult to reach the premeasured depth; (iii) blood withdrawal is difficult; (iv) the catheter flushes with resistance; and (v) it is difficult to remove the stylet. An X ray after PICC is necessary to idendify whether or not the catheter is malpositioned.…”
Section: Discussionmentioning
confidence: 99%
“…23 Difficulty advancing the catheter during insertion, inadequate blood draw, and difficulties removing the stylet/dilator sheath are indicative that the catheter may have been incorrectly placed and in such cases radiography or fluoroscopy is indispensable to identify whether the catheter has been incorrectly placed. 24 In a study with 3,012 patients, conducted by Song and Li, 23 technical success was achieved in 94.6% of PICC placements and 237 devices were identified as incorrectly placed outside of the vena cava, assessed by radiography after insertion of the catheter, with the most frequent location being the jugular vein, followed by the axillary and brachial veins (Figure 7). At our service, following a preestablished protocol, we did not detect any incorrectly positioned catheters.…”
Section: Discussionmentioning
confidence: 99%