| English |
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| Title | The Usefulness of the 22-Gauge Safe Guide(R) Based on Penetration Force and Pattern of Blood Regurgitation |
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| Subtitle | |
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| Authors | Toshiyasu Suzuki*, Jun Hasegawa*, Kenji Itoh*, Masahiro Kanazawa*, Mamoru Takiguchi*, Masatoshi Oda** |
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| Authors(kana) | |
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| Organization | *Department of Anesthesiology,School of Medicine,Tokai University, **Unisis Corporation |
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| Journal | Circulation Control |
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| Volume | 21 |
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| Number | 4 |
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| Page | 427-433 |
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| Year/Month | 2000/ |
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| Article | Original article |
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| Publisher | Japan Society of Circulation Control |
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| Abstract | The force required to penetrate a film was studied in needles used for central venous puncture. In addition, the right internal jugular vein was punctured using these needles to clinically evaluate the magnitude of venous compression associated with their usage by observing whether blood regurgitation occurred upon the advancement or withdrawal of the needles. The needles studied were a 23-G injection needle, 22- and 20-G Safe guide(R), an 18-G needle and 2 types of 18-G indwelling intravenous catheters. These needles were attached to a motor propelled push-pull gauge and the changes in force (g) required to penetrate polyethylene films using these needles were observed. The difference between the penetration force of the 23-G injection needle and the 22-G Safe guide(R) was significant when piercing a 0.08-mm film with the penetration angle at 45°, with that of the 22-G Safe guide(R) being significantly smaller. However, the penetration force of the other needles was significantly greater than that of the 23-G injection needle, showing a force 2- to 4-fold greater than that of the 23-G injection needle. With the penetration angle at 30o, the penetration force of the 22-G Safe guide(R) was significantly greater than that of the 23-G injection needle irrespective of film thickness. Blood regurgitation occurred upon the advancement of the needle in most cases in which the 23-G injection needle and the 22-G Safe guide(R) were used, however, it occurred upon withdrawal of the needle in 30% of the cases in which the 20-G Safe guide(R) was used and in 47% of those in which the 18-G needle was used, suggesting that compression of the vein was substantial when using these needles. The results of this study indicate that the physical and clinical characteristics of the 22-G Safe guide(R) are similar to those of the 23-G injection needle. |
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| Practice | Basic medicine |
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| Keywords | Safe guide(R), Penetration force, Penetration angle |
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