• The Korean Journal of Pain
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• v.11 no.1
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• pp.124-126
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• 1998

As laparoscopic surgery becomes more popular, various complications following the laparoscope are also increasing. Nerve injury following the laparoscope is an infrequent but serious complication for both the doctor and patient. A 30-year old female patient suffered severe burning pain of the left buttock, inguinal area, external genitalia and inner side of vagina following laparoscopic surgery for ovarian mass. We successfully treated this patient with ilioinguinal, iliohypogastric nerve block in combination with epidural blocks.

• Korean Journal of Biological Psychiatry
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• v.2 no.2
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• pp.252-256
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• 1995

Corticotropin-releasing factor(CRF)를 분비하는 배양세포주는 CRF의 세포내 조절을 연구하는데 있어 훌륭한 체계가 된다. BE(2)-M17 및 BE(2)-C 세포주는 CRF를 생산하고 분비하며 forskolin 처치에 반응하는 것으로 알려져 있다. 저자들은 이들 세포주에 phorbol 에스테르, 즉 phorbol 12-myristate 13-acetate(TPA) 0.8, 4, 10, 20 nM, 및 nitric oxide(NO)의 신호전달 경로의 자극제(1-${\mu}M$ nitroprusside)와 차단제($1{\mu}M$ nitroprusside+$300{\mu}M$ $N^G$-methyl-D-arginine), 그리고 interleukin-$1{\alpha}$ (IL $1{\alpha}$ ; 4, 20, 100, 500 pM)를 처치하여 CRF를 의미있게 증가시켰으나 세포외 분비는 C 세포에서만 변화되었다. NOS계의 자극제와 차단제는 C 세포의 forskolin 효과를 의미있게 변화시켰다. IL$1{\alpha}$는 두 세포주에 대한 영향이 없었다. 상기 제제들에 대한 이들 세포의 반응이 중추신경계 CRF 신경들과 관련하여 논의되었다.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.20 no.3
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• pp.247-253
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• 2007

Determination of crack depth in filed using the self-calibrating surface wane transmission measurement and the cutting frequency in the transmission function (TRF) is very difficult due to variations of the measurement conditions. In this study, it is proposed to use the measured full TRF as a feature for crack depth assessment. A Principal component analysis (PCA) is employed to generate a basis of the measured TRFs for various crack cases. The measured TRFs are represented by their projections onto the most significant principal components. Then artificial neural networks (NNs) using the PCA-compressed TRFs is applied to assess the crack in concrete. Experimental study is carried out for five different crack cases to investigate the effectiveness of the proposed method. Results reveal that the proposed method can be effectively used for the crack depth assessment of concrete structures.

• The Korean Journal of Pain
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• v.11 no.2
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• pp.307-310
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• 1998

Selective lumbosacral radiculography and nerve root block techniques are very useful in determining the nerve root involved. We have done the lumbar root block to 61-year-old female who had suffered from low back pain radiating to right lower leg which was not relieved by epidural steroid injection two times. $L_5$ root block was performed under the fluoroscopic C-arm guide. When the needle was in correct position, we injected contrast medium (Isovist$^{(R)}$ - 300, Schering, Germany). After we injected 1.5 cc isovist, the S1 root was figured but L5 root was not figured. When we reinjected 1.5 cc isovist, $S_1$ root was enhanced and $L_5$ root was slightly visible due to severe disc bulging and lateral spinal stenosis.

• Journal of Digital Convergence
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• v.18 no.8
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• pp.505-509
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• 2020

A migraine was a headache disorder characterized by recurrent moderate to severe headaches. The diagnosis was based on clinical signs and symptoms. Medication, physical therapy, nerve block, and nerve stimulation could be applied for treatment. This report described a case of severe migraine without aura that lasted several weeks periodically in a 59-year-old woman. Periodic headache had lasted for more than 14 years, and although she took medicines and nerve blocks, severe pain (VAS 7) was persisted. We recommended her to use the thermo-spinal massage device (CGM MB-1401, CERAGEM Inc., Cheonan, South Korea) continuously three times a week applying in semi-automatic mode around the neck for 40 minutes. There was no change in the pain scale in the automatic mode for the first 4 weeks. Subsequently, the semi-automatic mode of the cervical area was treated for 2 weeks to relieve the pain scale, and it was confirmed that the relieved state maintained for 2 months. This case highlighted the importance in considering thermo-spinal massage devices for managing migraine without aura.

• The Korean Journal of Pain
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• v.2 no.2
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• pp.203-207
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• 1989

Anesthesiologists are usually responsible for the major works in pain clinics and are often called for many sophisticated nerve blocks in the management of acute or chronic intractable pain. It is, therefore, not uncommon for the anesthesiologists to meet some unexpected and unusual complications during his or her performance. We experienced a case of a pneumothorax following a thoracic intrathecal alcohol block. There was an unusual and yet unexplainable cephalad spread of alcohol following an injection through the 4th sacral foramen, and a shearing off of the catheter by a Tuohy epidural needle following the epidural catheterization. All these three cases are herein presented.

• The Korean Journal of Pain
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• v.1 no.1
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• pp.28-33
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• 1988

Neurolysis of the celiac plexus has been performed to relieve intractable pain caused by carcinoma of the pancreas, liver, gall bladder or stomach. It is also occasionally effective in controlling the pain of chronic pancreatitis. In practice, however celiac plexus block is not a simple procedure to the beginner. The results and complications are variable. In order to correctly inject neurolytic agents into or near the celiac plexus and to reduce the time consumed to perform celiac plexus block, we used CT scanner for 7 cases of alcohol celiac plexus block. The effects will be described. The purpose of this article is to improve the technical aspect of celiac plexus block to the beginner.

• The Korean Journal of Pain
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• v.5 no.1
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• pp.80-84
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• 1992

49세 여자 환자가 경부 추간판 탈출증의 치료를 받기위하여 전신 마취하에 우측의 추궁 절제술과 전방 추체간 접합술을 받고난 즉시 회복실에서 부터 양측 상지에 작열통이 발생하였다. 환자는 양측 상지에 전형적인 작열통의 증상인 allodynia, 통각 과민(hyperalgesia), 통각 이상 과민증 (hyperpathia)을 보였으며 특히 우측 상지에는 심한 부종을 보이고 있었다. 환자는 일련의 성상 신경절 차단과 disposable $Daymate^{TM}$ portable elastomeric infusor를 이용한 연속적 상완신경총 차단으로 작열통이 완치되었다.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1993.04a
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• pp.62-62
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• 1993

Morphine은 강력한 진통작용으로 약효를 나타내고 있고 이와 같은 진통작용은 대체로 크게 대별하여 두 가지 기전으로 설명이 된다. 그 첫째는 수의 opioid수용체에 작용하여 척수에서 상행으로 전달되는 통각정보를 차단하는 것이며 또 다른 하나는 뇌에 존재하는 opioid수용체에 작용하여 진통작용을 발현한다고 알려져 있다. 실지로 임상에서 morphine을 실내에 주입하여 강한 진통작용을 가진바가 많이 보고되었다. 그러나, 아직 마약성 진통제가 뇌를 통하여 진통작용을 가지는 그 기전에 대해선 잘 밝혀지지 않았다. 많은 연구가 마약성 진통제가 뇌에 주입되면 뇌에 존재하는 opioid수용체에 작용하고 이 수용체를 가진 신경세포가 하향성 억제를 함으로써 척수에서 통각정보를 차단하여 진통작용을 나타냄을 시사한다. 그러나 아직도 이의 정확한 기전이 명쾌히 밝혀지지 않고 있다. 즉, 뇌실내에 morphine을 주입하면 이것이 과연 척수세포를 억제할 것인가에 대한 답이 없기 때문이다. 그와는 반대로 뇌실내 morphine주입은 척수세포에 아무런 영향을 미치지 못한다는 보고가 있다. 이에 본 실험은 뇌실에 주입된 morphine이 척수세포를 어떤 영향을 미치는가를 확인하고자 하였다.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1924-1925
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• 2007

본 논문에서는 부정맥 판별을 위한 전처리 과정으로 PCA, LDA, ICA를 바탕으로 하여 정확도를 비교하여 보았다. 각각의 전처리는 고유의 특성을 가지고 있으며 본 논문의 목적은 부정맥 판별상 어떤 전처리가 더욱 정확성의 면에서 효과적인지를 알아보는 것이다. 본 논문의 데이터는 MIT-BIH에 기반하고 있으며, Beat의 분류는 정상(Normal), 좌각차단(Left Bundle Branch Block, LBBB), 우각차단(Right Bundle Branch Block, RBBB), 조기심실수축(Premature Ventricular Contraction, PVC), 조기심방수축(Atrial Premature Beat, APB), paced Beat, 심실보충수축(Ventricular Escape Beat)로 나누었다. 실험적 결과는 PCA-BPNN의 경우 95.53%, ICA-BPNN의 경우 93.95%, LDA-BPNN의 경우 96.42%로 LDA가 가장 ECG 부정맥 판별 응용에 있어 가장 효율적인 방법으로 나타났다.