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Comparing tissue coring potentials of hollow needles without stylet and caudal needles with stylet: an experimental study

Published online by Cambridge University Press:  01 June 2008

F. Guldogus ,
Y. S. Baris ,
S. Baris ,
D. Karakaya  and
E. Kelsaka
F. Guldogus
Affiliation:
Ondokuz Mayıs University, Faculty of Medicine, Department of Anesthesiology, Kurupelit, Samsun, Turkey
Y. S. Baris
Affiliation:
Ondokuz Mayıs University, Faculty of Medicine, Department of Pathology, Kurupelit, Samsun, Turkey
S. Baris*
Affiliation:
Ondokuz Mayıs University, Faculty of Medicine, Department of Anesthesiology, Kurupelit, Samsun, Turkey
D. Karakaya
Affiliation:
Ondokuz Mayıs University, Faculty of Medicine, Department of Anesthesiology, Kurupelit, Samsun, Turkey
E. Kelsaka
Affiliation:
Ondokuz Mayıs University, Faculty of Medicine, Department of Anesthesiology, Kurupelit, Samsun, Turkey
*
Anesteziyoloji ve Reanimasyon Anabilim Dalı, Tıp Fakültesi, Ondokuz Mayıs Üniversitesi, 55139, Kurupelit, Samsun, Turkey. E-mail: sbaris@omu.edu.tr; Tel: +90 362 4590272; Fax: +90 362 4576041
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Summary

Background and objectives

Although the association of tissue coring and development of epidermoid tumour has been proposed, the extent and frequency of such coring is still controversial and the viability of carried cells has not been substantiated. In the present study, we used an experimental model without needle removal to investigate the incidence of tissue coring using two different needle types.

Methods

We inserted 22-G caudal (n = 34) or 22-G hollow (n = 25) needles to the tumour-free areas of fresh modified mastectomy specimens. The specimen was stretched and needles were inserted perpendicular to the skin and forced to penetrate the full thickness of the specimen. Without removing the needle, the needle cavity was then washed with 2 mL of RPMI 1640 with l-Glutamine and the washings were collected in a 15-mL falcon tube. The tubes were sealed and labelled and processed to obtain cytologic preparations. The slides were evaluated under a light microscope.

Results

A high rate of epithelial cell transportation was noted. All the carried cells were stratum corneum cells with no nucleus. No nucleated cells were seen. The incidence of carried cells was 64.7% and 72.0% in the caudal and hollow needle groups, respectively (P > 0.05).

Conclusion

Only cells from the outermost layer, stratum corneum, which is made of dead flat skin cells, were transported with needle puncture. The risk of epidermoid tumour development after regional anaesthesia must therefore be low. The incidence of transporting non-nucleated stratum corneum cells was similar between hollow and caudal needles.

Keywords

SKINANAESTHESIA CAUDALANAESTHESIA SPINALNEEDLES
Type
Original Article
Information
European Journal of Anaesthesiology , Volume 25 , Issue 6 , June 2008 , pp. 498 - 501
Copyright
Copyright © European Society of Anaesthesiology 2008

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References

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