Takahashi H, Okubo N, Naito H
Department of Anesthesiology, University of Tsukuba.
Masui. 1994 Jun;43(6):905-11.
We measured fluctuation of injection pressure by several types of commercially available syringe pumps in order to investigate the effect of syringe volumes (Terumo syringe) and speed settings on the irregularity of injection speeds. We recorded the injection pressure continuously with various speed settings, except that one of the pumps injected irregularly at the settings of 2 and 1 ml.h-1. With 50 ml syringes, only two of the six pumps injected precisely at all the speed settings. With the other four types, a steep increase in pressure was recorded at the speed setting of 1 ml.h-1. However irregular infusion was never observed by using a syringe of a high resistant type (TOP syringe). With 30 ml syringes, injection pressures fluctuated in most of the six syringe pumps at a speed lower than 5 ml.h-1. In conclusion, changes in injection pressures depend on types of syringes, syringe volumes and speed settings. We urge not to use a 30 ml syringe to infuse vasoactive drugs with syringe pumps.
为了研究注射器容量（泰尔茂注射器）和速度设置对注射速度不规则性的影响，我们使用了几种市售的注射泵来测量注射压力的波动情况。我们在各种速度设置下连续记录注射压力，但其中一台泵在2和1 ml.h-1的设置下注射不规则。使用50 ml注射器时，六台泵中只有两台在所有速度设置下都能精确注射。对于其他四种类型的泵，在1 ml.h-1的速度设置下记录到压力急剧上升。然而，使用高阻力型注射器（TOP注射器）时从未观察到不规则输注情况。使用30 ml注射器时，六台注射泵中的大多数在低于5 ml.h-1的速度下注射压力会波动。总之，注射压力的变化取决于注射器类型、注射器容量和速度设置。我们强烈建议不要使用30 ml注射器通过注射泵输注血管活性药物。
