Masui. The Japanese journal of anesthesiology
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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.
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We report anesthetic experience of two patients suffering from polymyositis. The first case is a 56 year old woman who underwent tympanoplasty for cholesteatoma of the middle ear. Anesthesia was induced with thiopental and deepened with oxygen-nitrous oxide and sevoflurane. ⋯ Concerning the anesthetic management of a patient with polymyositis, there are some informations on the appropriate use of muscle relaxants. It is generally believed that the patient is sensitive to nondepolarizing muscle relaxants and the use of antagonist drug (reversal) may cause muscle weakness, severe dysrhythmia, et al. Therefore we think it is appropriate to manage such a patient without muscle relaxants.
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We asked 31 anesthesiologists, who were on the Japanese Board of Anesthesiology, about inadvertent injection of drugs into the epidural space, and received answers from 28 (90%). Fifteen (54%) had an experience of inadvertent epidural injection, and five of them had two experiences. ⋯ No treatment was added after the inadvertent injections, except a patient with an epidural steroid injection following thiopental. No neurological complications were found in any patients.