• Title/Summary/Keyword: Sensory block

Search Result 114, Processing Time 0.024 seconds

Neural Ablation and Regeneration in Pain Practice

  • Choi, Eun Ji;Choi, Yun Mi;Jang, Eun Jung;Kim, Ju Yeon;Kim, Tae Kyun;Kim, Kyung Hoon
    • The Korean Journal of Pain
    • /
    • v.29 no.1
    • /
    • pp.3-11
    • /
    • 2016
  • A nerve block is an effective tool for diagnostic and therapeutic methods. If a diagnostic nerve block is successful for pain relief and the subsequent therapeutic nerve block is effective for only a limited duration, the next step that should be considered is a nerve ablation or modulation. The nerve ablation causes iatrogenic neural degeneration aiming only for sensory or sympathetic denervation without motor deficits. Nerve ablation produces the interruption of axonal continuity, degeneration of nerve fibers distal to the lesion (Wallerian degeneration), and the eventual death of axotomized neurons. The nerve ablation methods currently available for resection/removal of innervation are performed by either chemical or thermal ablation. Meanwhile, the nerve modulation method for interruption of innervation is performed using an electromagnetic field of pulsed radiofrequency. According to Sunderland's classification, it is first and foremost suggested that current neural ablations produce third degree peripheral nerve injury (PNI) to the myelin, axon, and endoneurium without any disruption of the fascicular arrangement, perineurium, and epineurium. The merit of Sunderland's third degree PNI is to produce a reversible injury. However, its shortcoming is the recurrence of pain and the necessity of repeated ablative procedures. The molecular mechanisms related to axonal regeneration after injury include cross-talk between axons and glial cells, neurotrophic factors, extracellular matrix molecules, and their receptors. It is essential to establish a safe, long-standing denervation method without any complications in future practices based on the mechanisms of nerve degeneration as well as following regeneration.

The clinical study on 2 cases of patients of carpal tunnel syndrome (수근관 증후군 환자 2례에 대한 증례보고)

  • Shin, Dong-Soo;Lee, Hyun
    • Journal of Haehwa Medicine
    • /
    • v.15 no.1
    • /
    • pp.79-85
    • /
    • 2006
  • Carpal tunnel syndrome is a common peripheral nerve entrapment syndrome that is characterized by pain, numbness, sensory disturbance along the distribution of the median nerve in hand. Diagnosis mainly depends upon careful examination and symptomatology. Treatments have included wrist immobilization, anti-inflammatory drug, local injection of steroid, nerve block and surgical decompression. This is a clinical report about 2 cases of carpal tunnel syndrome patients who undergo oriental medical treatment. Both of two cases, Symptoms were disappeared and physical examinations were improved. The results of this study demonstrate that oriental medicine treatment that including acupuncture and herbal medicine therapy can have noticeable effects in treating the carpal tunnel syndrome.

  • PDF

A CASE REPORT OF TRAUMATIC NEUROPATHIC PAIN PATIENT (외상성 신경병증 환자의 치험례)

  • Choi, Moon-Gi
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
    • /
    • v.34 no.2
    • /
    • pp.200-206
    • /
    • 2008
  • A variety of mechanisms may generate pain resulting from injury to the peripheral nervous system. None of these mechanisms is disease-specific, and several different pain mechanisms may be present simultaneously in any one patient. Diagnosis of neuropathic pain is often easily made from the information gathered on neurologic examination and from patient history. Evidence of sensory disturbances elicited by examination combined with laboratory tests confirming injury to peripheral nerve establishes the diagnosis of neuropathic pain. Although treatment of neuropathic pain may be difficult, optimum treatment can be achieved if dentist has a complete understanding of the therapeutic options. Pharmacologic therapy has been the mainstay of treatment. Selection of an appropriate pharmacologic agent is by trial and error since individual response to different agents, doses, and serum level are highly variable. An adequate trial for each agent tried is key to pharmacologic treatment of neuripathic pain. If pharmacologic treatment is not effective, nerve block using lidocaine, steroid and alcohol and neurectomy must be considered for treatment option.

A Study on the Handle of Fabrics for commercial Korean Clothes (1) The relationship between subjective assessment and mechanical properties (시판 한복지의 태 (hand) 에 관한 연구 (1) 주관적 감각치와 역학량과의 상관성)

  • 권헌선;권오경;성수관
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
    • /
    • 1997.11a
    • /
    • pp.57-62
    • /
    • 1997
  • The purposse of this study is to evaluate the effect of mechanical properties on handle of fabrics for some of the korean women's clothes, 160 different kinds of commercial silk and polyester fabrics were used for this study. Mechanical properties were measured by the KES-FB fabric testing systems and six hand judgements. and also, the technique of stepwise-block-regression method was applied to investigate relationship between sensory and mechanical properties. Finally, we have obtained useful formulas for calculation the hand valuer of fabrics for korean clothes.

  • PDF

Study of Carpal tunnel syndrome (수근관 증후군(Carpal tunnel syndrome)에 관한 고찰 - 동의보감(東醫寶鑑)을 중심으로 -)

  • Kim, Yong-Kul;Oh, Min-Seok
    • Journal of Haehwa Medicine
    • /
    • v.17 no.1
    • /
    • pp.129-136
    • /
    • 2008
  • This study was performed to investigate the cause, symptom, treatment of carpal tunnel syndrome through Western medicine and Dong-Eui-Bo-Kham(東醫寶鑑). Results & conclusions 1. Carpal tunnel syndrome is a common peripheral nerve entrapment syndrome that is characterixed by pain, numbness, sensory disturbance along the dsitribution of the meridian nerve in hand 2. Treatment of carpal tunnel syndrome have included wrist immobilization, anti-inflammatory drug, local injection of steroid, nerve block and surgical decompression. 3. Carpal tunnel syndrome seems to be similar with numbness(痺證). The causes were usually pathogenic Wind, Cold, Dampness. 4.Acupuncture, herbal medicine, herbal acupuncture were used for treatment of carpal tunnel syndrome. We considered that more study to find various and effective methods oriental medicine for carpal tunnel syndrome should be made.

  • PDF

Stellate Ganglion Blocks for Treatment of Impotence (발기 부전증 환자의 치료에 성상신경절 차단 1예 보고)

  • Suh, Jae-Hyun
    • The Korean Journal of Pain
    • /
    • v.8 no.2
    • /
    • pp.336-340
    • /
    • 1995
  • Impairment of erectile function, although normally a benign disorder, has a profound impact on the well-being of many men. Penile erection is produced by a complex series of events involving cognition, peripheral sensory input, central and peripheral autonomic nervous events and hormonal vascular events. The multiplicity of potential determinants identified suggest that impotence does not inexorably accompany age, but it is an arugmented significantly modifiable paraaging phenomena. A 53 year old male patients developed sudden impotence. The patients did not respond to intracavernous injection of papaverine. This patient was successfuly treated with 4 repeated stellate ganglion blocks.

  • PDF

A Study on Bidirectional Detection Safety Equipment Mechanism for Casualty Accidents Protection of Railroad Workers and Motorcars (철도 선로변 유지보수 작업자 및 모터카 안전을 위한 양방향 안전설비 동작 메커니즘 연구)

  • Hwang, Jong-Gyu;Jo, Hyun-Jeong
    • The Transactions of the Korean Institute of Electrical Engineers P
    • /
    • v.59 no.4
    • /
    • pp.384-389
    • /
    • 2010
  • Workers maintaining at the railroad trackside may collide with the train since they cannot recognize the train approaching because of the sensory block phenomenon occurred due to their long hours of continued monotonous maintenance work. To reduce these casualty accidents of maintenance workers working at the trackside of railroad, we developed the wireless communication-based safety equipment for preventing accidents. The motor-cars for maintaining trackside facility have unique operational patterns suitable for urban environment. The several mechanism for developed safety equipment are represented in this paper.

A Case of the Shoulder-Hand Syndrome Caused by a Crush Injury of the Shoulder (견관절부 외상후 발생된 Shoulder-Hand Syndrome)

  • Jeon, Jae-Soo;Lee, Sung-Keun;Song, Hoo-Bin;Kim, Sun-Jong;Park, Wook;Kim, Sung-Yell
    • The Korean Journal of Pain
    • /
    • v.2 no.2
    • /
    • pp.155-166
    • /
    • 1989
  • Bonica defined, that reflex sympathetic dystrophy (RSD) may develop pain, vasomotor abnoramalities, delayed functional recovery, and dystrophic changes on an affected area without major neurologic injury following trauma, surgery or one of several diseased states. This 45 year old male patient had been crushed on his left shoulder by a heavily laden rear car, during his job street cleaning about 10 years ago (1978). At first the pain was localizea only to the site of injury, but with time, it spreaded from the shoulder to the elbow and hand, with swelling. X-ray studies in the local clinic, showed no bone abnormalities of the affected site. During about 10 years following the injury, the had recieved several types of treatments such as nonsteroidal analgesics, steroid injections into the glenoidal cavity (10 times), physical therapy, some oriental herb medicines, and acupuncture over a period of 1~3 months annually. His shoulder pain and it's joint dysfunction persisted with recurrent paroxysmal aggrevation because of being mismanaged or neglected for a sufficiently long period these fore permiting progression of the sympathetic imbalance. On July 14 1988 when he visited our clinic. He complained of burning, aching and had a hyperpathic response or hyperesthesia in touch from the shoulder girdle to the elbow and the hand. Also the skin of the affected area was pale, cold, and there was much sweating of the axilla and palm, but no edema. The shoulder girdle was unable to move due to joint pain with marked weakness. We confirmed skin temperatures $5^{\circ}C$ lower than those of the unaffected axilla, elbow and palm of his hand, and his nails were slightly ridged with lateral arching and some were brittle. On X-ray findings of both the shoulder AP & lateral view, the left humerus and joint area showed diffuse post-traumatic osteoporosis and fibrous ankylozing with an osteoarthritis-like appearance. For evaluating the RSD and it's relief of pain, the left cervical sympathetic ganglion was blocked by injecting 0.5% bupivacaine 5 ml with normal saline 5 ml (=SGB). After 15 minutes following the SGB, the clinical efficacy of the block by the patients subjective score of pain intensity (=PSSPI), showed a 50% reduction of his shoulder and arm pain, which was burning in quality, and a hyperpathic response against palpation by the examiner. The skin temperatures of the axilla and palm rose to $4{\sim}5^{\circ}C$ more than those before the SGB. He felt that his left face and upper extremity became warmer than before the SGB, and that he had reduced sweating on his axilla and his palm. Horner's sign was also observed on his face and eyes. But his deep shoulder joint pain was not improved. For the control of the remaining shoulder joint pain, after 45 minutes following the SGB, a somatic sensory block was performed by injecting 0.5% bupivacaine 6 ml mixed with salmon calcitonin, $Tridol^{(R)}$, $Polydyn^{(R)}$ and triamcinolone into the fossa of the acromioclavicular joint region. The clinical effect of the somatic block showed an 80% releif of the deep joint pain by the PSSPI of the joint motion. Both blocks, as the above mentioned, were repeated a total of 28 times respectively, during 6 months, except the steroid was used just 3 times from the start. For maintaining the relieved pain level whilst using both blocks, we prescribed a low dose of clonazepam, prazocin, $Etravil^{(R)}$, codeine, etodolac micronized and antacids over 6 months. The result of the treatments were as follows; 1) The burning, aching and hyperpathic condition which accompanied with vaosmotor and pseudomotor dysfunction, disappeared gradually to almost nothing, within 3 weeks from the starting of the blocks every other day. 2) The joint disability of the affected area was improved little by little within 6 months. 3) The post-traumatic osteoporosis, fibrous ankylosis and marginal sclerosis with a narrowed joint, showed not much improvement on the X-ray findings (on April 25, 1989) 10 months later in the follow-up. 4) Now he has returned to his job as a street cleaner.

  • PDF

The Plasma Concentrations and Systemic Toxicity of Lidocaine after Maximal or Supramaximal Recommended Doses of Epidural Administration (경막외 Lidocaine의 최대사용량과 혈중농도에 대한 고찰)

  • Park, Han-Suk;Chung, Chan-Jong;Chin, Young-Jhoon
    • The Korean Journal of Pain
    • /
    • v.12 no.1
    • /
    • pp.36-42
    • /
    • 1999
  • Background: The current maximal recommended doses of lidocaine are 7 mg/kg with $5\;{\mu}g/ml$ of epinephrine. But in clinical practice, sometimes more doses of lidocaine are required to produce adequate regional anesthesia. Method: Twenty-two healthy women patients were divided into two groups and pretreated with valium 5 mg p.o., morphine 5 mg i.m., and midazolam 2 mg i.v. before operation. Of these, 7 mg/kg of 2% lidocaine with $5\;{\mu}g/ml$ of epinephrine were given to 11 patients epidurally. Initial 3 ml of epinephrine mixed lidocaine was given as a test dose and remaining doses were given 5 ml/30 sec with 3 min intervals. Radial arterial blood were drawn at 5, 10, 15, 20, 30, 45, 60, 90, 120 min to measure plasma lidocaine concentrations. After confirming all of the peak plasma concentrations of 7 mg/kg lidocaine were absolutely under $5\;{\mu}g/ml$, the other 11 patients were given 10 mg/kg of 2% lidocaine with $5\;{\mu}g/ml$ of epinephrine epidurally and blood samplings were taken according to the same method of 7 mg/kg group. The peak plasma concentration ($C_{max}$), time to reach to $C_{max}$ ($T_{max}$), time to reach to $T_4$, maximal sensory block level, systemic toxicity, and vital sign changes were investigated. Result: $C_{max}$ was significantly higher in 10 mg/kg group ($5.1{\pm}1.3\;{\mu}g/ml$) than 7 mg/kg group($3.3{\pm}0.5\;{\mu}g/ml$), but $T_{max}$ ($10.5{\pm}2.7$ min vs $10.9{\pm}3.1$ min) was not different. Time to reach $T_4$ was significantly shorter in 10 mg/kg group ($9.5{\pm}2.7$ min) than 7 mg/kg group ($12.7{\pm}3.2$ min) but maximal sensory block level ($T_{3.7{\pm}0.7}$ vs $T_{2.7{\pm}1.0}$) was not different. In four patients of 10 mg/kg group, peak plasma concentrations exceeded $5\;{\mu}g/ml$, but no systemic toxicities appeared. No significant vital sign changes were observed. Conclusion: The current maximal recommended doses of lidocaine, merely based on body weight are not always appropriate. Further studies are needed to determine more precise guideline of maximal doses that include various pharmacokinetic components.

  • PDF

Spinal Anesthesia for Lower Extremities : Comparison of Plain 0.5% Bupivacaine and Hyperbaric 0.5% Tetracaine (하지수술을 위한 0.5% 순수 Bupivacaine 척추마취)

  • Song, Sun-Ok;Koo, Bon-Up
    • Journal of Yeungnam Medical Science
    • /
    • v.7 no.2
    • /
    • pp.121-130
    • /
    • 1990
  • Plain 0.5% bupivacaine and hyperbaric 0.5% tetracaine were compared for spinal anesthesia in 40 patients undergoing operation of lower extremities. Lumbar puncture was performed with a 22 gauge spinal needle with the patient in the lateral recumbent position. The third lumbar interspace was chosen for the puncture, when a free flow of clear CSF was obtained, the local anesthetic solution (2.5ml of 0.5% bupivacaine or 2.0ml of hyperbaric 0.5% tetracaine) was injected at a rate of 0.1ml/sec without barbotage. After injection of anesthetics, clinical features were observed and compared between the two groups. The results were as follows : 1. The two groups were well matched for age, sex, height and weight. 2. In both groups, sensory block to $T_{12}$ dermatome was obtained within 4 minutes, mean maximal level of analgesia was $T_{6-7}$, and the mean time for maximal level was around 20 minutes. 3. The onset times of motor block were similar in both groups and complete motor block was obtained in all cases within 20 minutes. 4. The duration of analgesia above the $T_{12}$ dermatome was 3 hours, postoperative analgesia was 7 hours. These values were significantly prolonged than those of the tetracaine group(p<0.05). 5. The changes in systolic pressure in the bupivacaine group were significantly less than those of the tetracaine group(p<0.05). 6. The complications after spinal anesthesia were headache, numbness, urinary retention and backpain, and were no significant difference in both groups. From the obtained results, we concluded that plain 0.5% bupivacaine was a relatively satisfactory agent for spinal anesthesia for operation of lower extremities. The time of onset, height of block and the complications of postoperative period were similar in both groups. The advantages of plain 0.5% bupivacaine were less hypotension and long duration of analgesia.

  • PDF