Masui. The Japanese journal of anesthesiology
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Case Reports
[Anesthetic management of a morbidly obese patient undergoing laparoscopic gastric bypass surgery].
We describe a successful anesthetic management of a morbidly obese patient, weighing 170 kg, height of 170 cm and body mass index of 58.8 kg.m-2, who received gastric bypass surgery performed using laparoscopic assist. After arriving in the operating room, an epidural catheter was inserted into the epidural space at the T 7-8 intervertebral space. ⋯ Anesthetic management and recovering from anesthesia were uneventful. For propofol anesthesia, infusion rates determined using the corrected body weigh, was preferable for morbidly obese patients.
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Case Reports
[Effect of bolus propofol administration on muscle evoked potential (MsEP) during spine surgery].
Intraoperative monitoring of descending pathways by means of muscle evoked potential (MsEP) is a reliable method to monitor spinal cord motor function, but MsEP is readily affected by anesthetics. We monitored MsEP evoked by repetitive transcranial electrical stimulation of the motor cortex in 30 patients receiving spine surgery. Total intravenous anesthesia was maintained with propofol and fentanyl without any muscle relaxant. ⋯ The amplitude of MsEP decreased slightly by bolus propofol administration, but the latencies showed no significant change with propofol under the same condition. We consider that total intravenous anesthesia with propofol and fentanyl without muscle relaxants is compatible with the recording of MsEP evoked by high frequency repetitive electrical transcranial stimulations. When MsEP is monitored during spine surgery, anesthetic condition should be controlled carefully in order to maintain a stable blood concentration of propofol and thus to assure the reliability of MsEP measurements.
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Perioperative mortality and morbidity in Japan from Jan. 1 to Dec. 31, were studied retrospectively. Committee on Operating Room Safety of Japanese Society of Anesthesiologists (JSA) sent confidential questionnaires to 774 Certified Training Hospitals of JSA and received answers from 60.2% of the hospitals. We analyzed their answers with a special reference to the age group. ⋯ The mortality rates in these groups were 0.00, 0.00, 0.00, 0.17, 0.07, 0.05, and 1.48, and no death was found in cases under 5 years of age. The two cases of death in G group were due to too high anesthesia levels in spinal anesthesia. Other causes including overdose of anesthetics, toxic effect of local anesthetic, improper management of airway, and incompatible blood transfusion were preventable with the anesthesiologists' effort in protocol development and skilled assistance.
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A retrospective study was performed to determine the influence of age on hemodynamics and awakening time in total intravenous anesthesia (TIVA) using propofol and buprenorphine combined with continuous epidural anesthesia for abdominal surgery. Thirty-five patients (36-87 yr) were allocated to the following five groups by age: 36-49 yr, 50-59 yr, 60-69 yr, 70-79 yr and 80-87 yr. All patients were premedicated with midazolam i.m. ⋯ Two patients in each group required analgesics within 20 hours. Neither nausea, respiratory depression nor awareness was found. We suggest that the combination of TIVA and continuous epidural anesthesia would be useful to maintain stable hemodynamic state and to obtain early recovery time, especially in the elderly.
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Case Reports
[A case of central retinal artery occlusion after anterior posterior fusion of the lumbar spine].
We report a case of central retinal artery occlusion after anterior-posterior fusion of the lumbar spine. The patient suddenly lost his vision of the right eye in the ICU just after the end of long procedure for anterior-posterior fusion of the lumbar spine. The patient was diagnosed as having central retinal artery occlusion, and treated successfully with treatments including immediate administration of urokinase and PGE1, stellate ganglion block, and hyperbaric oxygen therapy. ⋯ Central retinal artery occlusion is a rare but very serious complication during and after supine surgery with prone position. It is very important for us to be aware of its possible occurrence. We have to diagnose and treat, as soon as possible, the vision loss after the spine surgery.