Masui. The Japanese journal of anesthesiology
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Comparative Study
[Comparison by simulation of the efficiency of surgical blood order equation (SBOE) with that of maximum surgical blood order schedule (MSBOS)].
The maximum surgical blood order schedule (MSBOS) is used to promote efficient blood ordering practice for surgical patients. A surgical order equation (SBOE) was developed to calculate the number of units of red blood cells that should be ordered considering specific patient variables. We compared the efficiency of SBOE with that of the MSBOS by simulations. ⋯ The SBOE reduced the ordered units more effectively than the MSBOS. The SBOE reduces crossmatch-to-transfusion ratio (C/T ratio) from 1.2 to 1.6 but it would reduce the ordered units in statistical significance in only two of six types of operations. In conclusion, the SBOE could improve C/T ratio.
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Randomized Controlled Trial Clinical Trial
[Low concentration/high volume is more effective than high concentration/low volume for postoperative continuous epidural analgesia with the combination of bupivacaine and fentanyl].
In 40 females undergoing gynecologic laparotomy, lumbar epidural analgesia using a disposable infusion pump was continued for postoperative 48 hours. Then the analgesic effect of epidural bupivacaine (4.8 mg.kg-1) plus fentanyl (12 micrograms.kg-1) diluted with normal saline was prospectively compared between the two groups; high concentration/low volume group (HC/LV, 96 ml of total volume and 2 ml.h-1 of infusion rate, n = 20) versus low concentration/high volume group (LC/HV, 240 ml of total volume and 5 ml.h-1 of infusion rate, n = 20). ⋯ No significant differences in the incidence of side effects were observed between the groups. These results suggest that when the equivalent dose is given, the volume rather than the concentration of the solution is important for postoperative continuous epidural analgesia with the combination of bupivacaine and fentanyl.
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Comparative Study
[The Baxter AS 50 syringe pump: a comparison with propofol-specific syringe pumps].
We used a Baxter AS 50 syringe pump for intravenous anesthesia with propofol, and compared it with a Grasby 3500 and a Terumo STC-525 X pumps, which are specifically designed for propofol infusion. The AS 50 pump is a programmable syringe infusion pump, which allows us to register up to 70 drug names in 10 categories and various infusion modes for drugs. There are 14 types of continuous infusion mode, a custom dilution mode, and three types of time infusion modes. ⋯ The AS 50 pump is also equipped with an RS-232 C digital interface port to allow external remote monitoring or automated control. On-line simulation of blood propofol concentration is possible with a simulation program such as Propofol-Mon. Our impression is that the AS 50 pump is compact, easy to use, accurate and reliable for propofol anesthesia.