Masui. The Japanese journal of anesthesiology
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Case Reports
[Successful management of a patient who developed intra-operative pulmonary tumor embolism].
A 68-year-old female with retroperitoneal tumor extending into the inferior vena cava (IVC) developed massive pulmonary tumor embolism during removal of the tumor. Because of her unstable hemodynamics, emergency pulmonary embolectomy under cardiopulmonary bypass was performed. Successful management of her intra- and post-operative persistent right heart failure led to a satisfactory postoperative course without serious neurological complications. In peri-operative management of a patient with an extended tumor into IVC, prevention of the embolism, detection of the pulmonary embolism and treatment of intra- and post-operative right heart failure are important.
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We used a Styletscope for endotracheal intubation in a 71-year-old man in whom neck recurvation is contraindicated. Orotracheal intubation was accomplished promptly with the scope. We conclude that Styletscope is useful for orotracheal intubation in patients with limited neck recurvation.
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We devised a new bite block made of a used connector of anesthesia machine (ACOMA medical industry CO., LTD.) for laryngeal mask. Fitness for laryngeal mask and strength against patient's biting are the key for its use. ⋯ We studied the strength of a new bite block experimentally and recognized its ability to bear the human biting. We conclude a new bite block for laryngeal mask is clinically useful and can be used during anesthesia for its fitness and safety.
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Historical Article
[New study on the history of anesthesiology (8)--Etymological consideration on a Japanese word "Masui"].
The author briefly describes etymology of a Japanese word "Masui" ([symbol: see text]) and discusses why this word has not been correctly understood by lay people as well as Japanese anesthesiologists. The word "Masui" was coined by Seikei Sugita in 1850 when he translated Dutch edition of Schelesinger's monograph on ether anesthesia into Japanese. ⋯ The author thinks that one of the causes for this inadequate acceptance is that the correct Japanese words of "Masuika-gaku" and "Masuika-i" for Anesthesiology and Anesthesiologists were not coined and the incorrect words as "Masuigaku" and "Masui-i" have been used. Not a small number of Japanese anesthesiologists still employ the words "Masuigaku" and "Masui-i" without any special reasons.
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Randomized Controlled Trial Clinical Trial
[Co-administration of nitrous oxide reduces the pressor response against oro-tracheal intubation during induction of anesthesia with propofol infusion at a low rate].
This study investigated the effect of co-administration of nitrous oxide on the cardiovascular changes during induction of anesthesia with propofol infusion at a low rate. Sixty patients undergoing general anesthesia were randomly allocated into two groups, and received the inhalation of 100% oxygen (group 1) or 60% nitrous oxide and oxygen (group 2) via face mask for 3 minutes before administration of propofol at 15 mg.kg-1.hr-1. After beginning of propofol infusion, patients inhaled each gas continuously and the loss of response to simple commands by the anesthesiologist was considered as hypnosis. ⋯ The dose of propofol and the time for achieving hypnosis showed no significant difference (73 +/- 20 vs. 68 +/- 19 mg and 4.8 +/- 1.0 vs. 4.4 +/- 1.0 min, respectively). Almost all patients were sedated with inhalation of nitrous oxide before infusion of propofol, but no additive effect was observed with nitrous oxide and propofol. Co-administration of nitrous oxide during propofol infusion at a low rate was an effective method to avoid undesirable pressor responses against oro-tracheal intubation without causing adverse cardiovascular depression.