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Comparative Study
A comparison of different methods of lubrication of glass syringes used to identify the epidural space.
- B C Leiman, J Katz, H Salzarulo, R D Warters, and B D Butler.
- Department of Anesthesiology, University of Texas Medical School, Houston 77030.
- Anaesthesia. 1988 May 1;43(5):397-8.
AbstractMeasurement of loss of resistance in glass syringes is a method widely used to locate the epidural space in epidural anaesthesia. Static and dynamic forces were measured under four experimental conditions in new glass syringes: unpolished, dry; polished, dry; unpolished, saline lubricated; and polished, saline lubricated. The unpolished saline lubricated syringes had a mean (SD) static force of 53.18 (15.0) g and dynamic force of 40.88 (15.2) g. These values were significantly greater than for polished dry syringes where the values were 5.27 (2.1) g and 4.38 (0.94) g, respectively. The results show that the least amount of resistance to plunger movement is obtained by dry polishing glass syringes.
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