Masui. The Japanese journal of anesthesiology
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Lidocaine adhesive tape (Penles; Wyeth Lederle Japan, Ltd, Tokyo, Japan) is placed for pain relief prior to puncturing a vein with a needle. We investigated the optimal time interval from application of Penles to vein puncture by measuring current perception threshold (CPT) levels with a Neurometer, by which it was possible to measure the extent of nerve block in a non-invasive and quantitative manner with 3 electrical stimulus rates (2000 Hz, 250 Hz, and 5 Hz). ⋯ However, CPT levels tended to decrease 12 hours after application, regardless of the stimulus rate. From the result, we conclude that Penles provides maximum benefit when applied 6 hours prior to vein puncture.
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The spread and time to two-segment regression of spinal anesthesia with 0.25% hyperbaric bupivacaine 2.0 ml (5 mg) were studied clinically in 20 patients for elective lower extremity, urological or gynecological surgery. Lumbar puncture was performed at the L 3-4 interspace with the patient in horizontal lateral decubitus positions using a 25-G Quincke needle. After injection of the local anesthetic solution at the rate of 0.2 ml.sec-1, the patient was placed immediately in supine position. ⋯ Maximum sensory block level was Th 10.6 +/- 2.3, and time to two-segment regression was 51.5 +/- 14.6 min. Complete motor block was observed in three out of twenty patients (15%). These results indicate that spinal anesthesia with 0.25% hyperbaric bupivacaine is useful for a short case, which dose not require motor block or is performed as day-care surgery.
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It has been hypothesized that the intubating laryngeal mask (ILM) has some advantages: (1) tracheal intubation is achieved with a neutral head-neck position and limited mouth opening, (2) intubation is not interfered with blood and secretion in the mouth, (3) ventilation via the device is possible, and (4) it is easy to use. Many studies have brought evidences for these points. ⋯ Degree of hemodynamic changes and incidences of postoperative airway complications are similar between the ILM and the laryngoscope. ILM-users should pay attention to these limitations when they use the ILM.
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Case Reports
[Perioperative management using propofol in a patient with uncontrolled preoperative hyperthyroidism].
There is a risk of thyrotoxic crisis during and after surgery in patients with uncontrolled hyperthyroidism. To avoid this, suppression of sympathetic activity during the perioperative period is important. ⋯ Propofol 6 to 8 mg.kg-1.hr-1 plus 66% of nitrous oxide was not sufficient to obtain hemodynamic stability during the surgery, but propofol 3 mg.kg-1.hr-1 produced optimal sedation in the postoperative period. The results demonstrate that propofol is useful for the anesthetic management of patients with uncontrolled hyperthyroidism.
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To determine how the education of basic life support (BLS)/advanced cardiac life support (ACLS) and emergency medicine for anesthesiologists is conducted, we performed a survey of chairpersons at university departments and newly board certified anesthesiologists in 1999. Basic and advanced life support courses for residents were provided in more than half of the anesthesiology departments that responded to this survey. ⋯ On the other hand, more than 80% of respondents considered a rotation in emergency medicine desirable as a part of anesthesia training. To improve the resuscitation skills of anesthesiologists, an urgent need to establish regular BLS/ALS courses and educational programs in emergency medicine in anesthesia training does exist.