• Young Hee Sung, Moon Sook Hwang, Jee Hyang Lee, Hyung Doo Park, Kwang Hyun Ryu, Myung Sook Cho, Young Hee Yi, and S Song.
• Department of Clinical Nursing Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
• J Korean Acad Nurs. 2012 Jun 1;42(3):443-51.

PurposeThis study was done to compare the rates of hemolysis and repeated sampling in blood samples obtained by a syringe needle versus a vacuum tube needle.MethodsA randomized, prospective study was used to evaluate the differences between the two blood sampling methods. The study group consisted of patients seen in the emergency department (ED) for blood sampling to determine electrolyte level. ED patients were randomly assigned to either the syringe group or the vacuum tube group. All blood samples were collected by experienced ED nurses and hemolysis was determined by experienced laboratory technologists. Data were analyzed using Fisher's exact test and binary logistic regression.ResultsOne hundred forty-five valid samples were collected (74 in the syringe group versus 71 in the vacuum tube group). 5 of 74 (6.8%) blood samples in the syringe group and 8 of 71 (11.3%) in the vacuum tube group hemolyzed. Repeated blood sampling occurred for 2 of 74 (2.7%) and 3 of 71 (4.2%) in each group respectively. There were no significant differences in rates of hemolysis and repeated sampling between two groups (B=1.97, p=.204; B=2.36, p=.345).ConclusionVenipuncture with syringe needles can be recommended for ED nurses to obtain blood samples.

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