Infection Status of Endoparasites in Foreigner Workers Living in Cheonan City, Chungnam Province, Korea

At present, more than 500,000 foreigner workers, most of them from Asian countries with high parasitic infection rates, are working in Korea. Since investigation into the prevalence of parasitic infections in foreigner workers has not yet been conducted in Korea, the present study was performed to determine the parasitic infection status of foreigner workers living in Cheonan City, Chungcheongnam-do (Chungnam Province) and to plan, on that basis, effective control measures. From October to December 2013, the parasitic infection status of 231 foreigner workers employed at selected Cheonan-si small businesses was investigated by both stool examination and ELISA. A total of 60 individuals (26.0%) were found to be infected with parasites. The stool examination detected 14 positive cases (6.1%), and ELISA revealed 50 positive people (21.6%), for at least a kind of parasitic disease. The most common infection was cysticercosis (8.7%), followed by toxocariasis (7.8%) and clonorchiasis (7.4%). Since it was proved that parasitic infections were prevalent among foreigner workers living in Cheonan City, more comprehensive study is urgently needed in order to understand the nationwide status of parasitic infections in foreigner workers.

General Anesthesia for Emergency Cesarean Section in a Patient with Severe Aortic Stenosis / 대한마취과학회지

A 34-year-old female underwent emergency cesarean section with general anesthesia. The patient was a para 1-0-0-1, referred at 39 weeks in labor with known severe aortic stenosis due to a bicuspid aortic valve. She has been treated with digoxin and furosemide for 5 years. At first, she tried a normal spontaneous vaginal delivery, but dyspnea was aggravated during delivery, so an emergency operation was decided. Anesthesia was induced using ketamine 80 mg, fentanyl 50 microgram and vecuronium 6 mg and maintained with 50% nitrous oxide in oxygen. After fetal delivery and infusion of oxytocin, the systolic blood pressure decreased to 60 mmHg or less, so we injected phenylephrine 100 microgram bolus. However, the blood pressure did not increase, so we injected phenylephrine continuously ( 0.5 microgram/kg/ min). One month postpartum, echocardiography was done. The left ventricle-aortic pressure gradient was 140 mmHg, so the cardiologist recommended an aortic valve replacement operation. She refused the operation and has been medicated with digoxin and furosemide up to date.

The Effects of Volume and Concentration Using the Hyperbaric Bupivacaine in Spinal Anesthesia / 대한마취과학회지

BACKGROUND: The purpose of this study is to investigate the effects of volume and concentration in a constant dose of subarachnoid bupivacaine on the extent and duration of sensory and motor blocks. METHODS: Forty parturients scheduled for cesarean section were randomly assigned to two groups for spinal anesthesia. In group 1, 3.5 ml of hyperbaric 0.25% bupivacaine (8.75 mg) with 0.25 mg morphine and 10 microgram fentanyl were injected into the subarachnoid space; in group 2, 1.75 ml of hyperbaric 0.5% bupivacaine (8.75 mg) with 0.25 mg morphine and 10 microgram fentanyl were injected. Dural punctures were performed at the L3-L4 or L2-L3 interspaces with a 25 gauge needle in the sitting position after which the patients were turned to the supine horizontal position. The level and extent of the sensory and motor block were measured at 3, 5, 10, and 15 minutes. The onset, duration and regression of sensory and motor blocks were studied. RESULTS: There were no significant differences between two groups in the level and extent of sensory and motor blocks. From onset time to maximal sensory block took 12.1 +/- 3.0 min in group 1, and 13.3 +/- 3.7 min in group 2, and from onset time to complete motor block took 10.2 +/- 2.7 min in group 1 and 11.4 +/-2.6 min in group 2. There was no significant difference in the time taken to complete the regression of seosory block, and the complete resolution of the motor block. CONCLUSIONS: A constant 8.75 mg dose of subarachnoid hyperbaric bupivacaine produced, in all groups, a similar, statistically insisnificant, level and extent of sensory and motor block, in spite of different volumes and concentrations.

The Effects of Volume and Concentration Using the Hyperbaric Bupivacaine in Spinal Anesthesia / 대한마취과학회지

BACKGROUND: The purpose of this study is to investigate the effects of volume and concentration in a constant dose of subarachnoid bupivacaine on the extent and duration of sensory and motor blocks. METHODS: Forty parturients scheduled for cesarean section were randomly assigned to two groups for spinal anesthesia. In group 1, 3.5 ml of hyperbaric 0.25% bupivacaine (8.75 mg) with 0.25 mg morphine and 10 microgram fentanyl were injected into the subarachnoid space; in group 2, 1.75 ml of hyperbaric 0.5% bupivacaine (8.75 mg) with 0.25 mg morphine and 10 microgram fentanyl were injected. Dural punctures were performed at the L3-L4 or L2-L3 interspaces with a 25 gauge needle in the sitting position after which the patients were turned to the supine horizontal position. The level and extent of the sensory and motor block were measured at 3, 5, 10, and 15 minutes. The onset, duration and regression of sensory and motor blocks were studied. RESULTS: There were no significant differences between two groups in the level and extent of sensory and motor blocks. From onset time to maximal sensory block took 12.1 +/- 3.0 min in group 1, and 13.3 +/- 3.7 min in group 2, and from onset time to complete motor block took 10.2 +/- 2.7 min in group 1 and 11.4 +/-2.6 min in group 2. There was no significant difference in the time taken to complete the regression of seosory block, and the complete resolution of the motor block. CONCLUSIONS: A constant 8.75 mg dose of subarachnoid hyperbaric bupivacaine produced, in all groups, a similar, statistically insisnificant, level and extent of sensory and motor block, in spite of different volumes and concentrations.

A Comparison of Recovery from Mivacurium during Enflurane or Propofol Anesthesia in Children / 대한마취과학회지

BACKGROUND: Mivacurium is a new, short acting, nondepolarizing muscle relaxant of the benzylisoquinolinium type. Enflurane produces relaxation and augments the neuromuscular blockade from muscle relaxation, but propofol does not produce muscle relaxation. We compared maintenance infusion rates, recovery index and correlations of recovery index to maintenance infusion rates and infusion duration after mivacurium during enflurane or propofol anesthesia in children. METHODS: Maintenance infusion rates, and the recovery index after mivacurium were studied in 30 pediatric patients in enflurane anesthesia (n = 15) and propofol anesthesia (n = 15). The ulnar nerve was stimulated at the wrist by repeated single twitch (1Hz) stimulus using the peripheral nerve stimulator (Model ST5 MaxiStimTM, Life-Tech , Inc, Texas, USA). We recorded the contraction of adductor pollicis longus via mechanomyography (MYOTRACE, Life-Tech, Inc, Texas, USA). RESULTS: The infusion rates of mivacurium for the maintenance of muscle relaxation (below 10% of control) were 9.6 0.80 microgram/kg/min in the enflurane anesthesia, and 11.04 1.22 microgram/kg/min in the propofol anesthesia. There was a significant difference between the groups. The recovery index was shorter in the propofol anesthesia, but regarding this index, there was no significant difference between both groups. The correlation between the recovery index and the infusion duration was significantly different in the enflurane anesthesia. CONCLUSIONS: We conclude that maintenance infusion rates are significantly lower in the enflurane anesthesia, the recovery index is insignificantly shorter in the propofol anesthesia, that there is a significant correlation between the maintenance infusion rates and recovery index in the enflurane anesthesia.