Lukas Hefler, MD; Christoph Grimm, MD; Sepp Leodolter, MD; Clemens Tempfer, MD
Acknowledgments: The authors thank Georg Heinze, PhD, Department of Medical Computer Sciences, Medical University Vienna, for expert statistical analysis.
Grant Support: In part by the Ludwig Boltzmann Foundation, Institute for Gynecology and Gynecologic Oncology.
Hefler L., Grimm C., Leodolter S., Tempfer C.; To Butterfly or To Needle: The Pilot Phase. Ann Intern Med. 2004;140:935-936. doi: 10.7326/0003-4819-140-11-200406010-00027
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Published: Ann Intern Med. 2004;140(11):935-936.
TO THE EDITOR:
Background: Choosing the right device for blood collection is a question frequently encountered in everyday clinical medicine. Although various studies have assessed anesthetic cremes for venipuncture-associated pain and blood sampling methods for blood glucose testing (1-4), no prospectively collected data have been published comparing different blood sampling devices such as the butterfly device and the conventional needle. Advocates of conventional needles claim a lower hemolysis rate, easier and more rapid handling, and a lower price (5). The butterfly collection device is thought to increase the success rate of venipuncture and to decrease patients' discomfort.
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