2017
DOI: 10.1111/jocd.12437
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Sensitivity of aspiration as a safety test before injection of soft tissue fillers

Abstract: True-positive results were seen in 33% of the tests performed with STFs within 1 s of aspiration. Aspiration test results are influenced by needle diameter, needle length, and rheological properties of STFs. Additional safety measures are necessary to further reduce risk of inadvertent intravascular injection of STFs.

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Cited by 46 publications
(37 citation statements)
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“…Possible false negative aspirations raise suspicion of the reliability of this maneuver and hinder the establishment of a universal guideline to promote safety in filler injections [3,[6][7][8][9].…”
Section: Discussionmentioning
confidence: 99%
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“…Possible false negative aspirations raise suspicion of the reliability of this maneuver and hinder the establishment of a universal guideline to promote safety in filler injections [3,[6][7][8][9].…”
Section: Discussionmentioning
confidence: 99%
“…During filler injections when the needle has been primed, the filler that fills the needle may prevent the influx of blood into the syringe upon aspiration. Studies have indicated that blood aspiration patterns during filler injections can vary depending on the filler characteristics and size of the needle or cannula used [6][7][8][9]. This lack of uniformity makes it difficult for researchers to recommend a standardized aspiration protocol which can be generalized to all different fillers.…”
Section: Introductionmentioning
confidence: 99%
“…The anatomy of the upper face predisposes it to a higher vascular complication risk, and it is important to be aware of the danger zones when treating patients. As aspiration is unreliable as a safety test for determining intravascular placement of the needle, a cannula is preferred for injection of CaHA combined with slow injection of small amounts of product . In the 70 patients included in this study, there were no incidence of vascular compromise with CaHA.…”
Section: Discussionmentioning
confidence: 99%
“…Nonetheless, aspiration tests can produce false negatives, wherein, even though the needle tip is located inside a vessel, blood is not detectable during aspiration. While this is thought to be affected by filler rheology, needle diameter, aspiration time, and negative pressure [16,17], aspiration tests with filler appear to be more dependent of conditions inside the needle. Accordingly, we have performed in vivo tests with rabbits and found that all aspiration tests with HA filler were positive when the needle was first primed with normal saline (Fig.…”
Section: As) Aspiration With Proper Techniquementioning
confidence: 99%