Comparison between T-connecter and three-way stopcock as a portal for obtaining samples from indwelling catheter
Harada, M.; Sawa, T.; Tanaka, Y.
Masui. Japanese Journal of Anesthesiology 40(12): 1852-1855
1991
ISSN/ISBN: 0021-4892 PMID: 1770578 Document Number: 381276
The accuracy of measurements on a sample obtained via either T-connector or three-way stopcock connected directly with an indwelling catheter was comparatively, evaluated. The sample was obtained through them after drawing glucose standard fluid (100mg .cntdot. dl-1) into a catheter which was primed with saline. The influence of sample volume and discarded volume on the glucose concentration in the sample was investigated, respectively. The results showed that both sample volume and discarded volume required smaller amount with a T-connecter than with a three-way stopcock to obtain more accurate measurements. The results also suggested that reamining discard aliquot in the connecting port of the three-way stopcock might influence the accuracy of the obtained sample when the sample volume was small.