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RISS 인기검색어
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- 저자 : 권경석 ( Kyoung Seok Kweon ) (검색결과 3 건)
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임상연구 : 사각근간 차단 시 찌름점에서 상완신경총과 6-7번 경추간공까지의 깊이 및 각도
권경석 ( Kyoung Seok Kweon ),양현정 ( Hyeon Jeong Yang ),길현주 ( Hyun Jue Gill ),설정호 ( Jung Ho Seol ),김지형 ( Ji Hyoung Kim ),이종연 ( Jong Yeon Lee ),김민구 ( Min Ku Kim ) 대한마취과학회 2008 Korean Journal of Anesthesiology Vol.55 No.5
Background: The angle and depth from the insertion point to the brachial plexus (BP) and C6-7 intervertebral foramen (IF) was examined to prevent critical complications of an interscalene brachial plexus block (ISBPB), such as an epidural or subdural injection of local anesthetics and spinal cord injury. Methods: Thirty patients (female=12, male=18), aged 20-64 years, undergoing shoulder or upper limb surgery were examined. ISBPB was performed at the interscalene groove intersecting the extended transverse line from the cricoid cartilage. A needle was then advanced towards the C6 transverse process (TP) and C6-7 IF under the C-arm fluoroscopic guidance. The depth and angle of the needle path intersecting the sagittal plane from the skin insertion point to BP, transverse process (TP) and IF were measured. Results: The mean depth of the needle from the insertion point to BP, TP and IF were 2.6±0.3 cm, 3.2±0.4 cm, 3.7±0.3 cm in the female patients, and 2.7±0.3 cm, 3.6±0.5 cm, 4.1±0.3 cm in the male patients. The mean angle of the needle path at the same point was 56.0±7.2° (range, 42.0-65.0°), 54.2±5.8°, 53.7±4.4° in the female patients, and 59.3±8.3° (45.0-75.0°), 54.0±6.3°, 54.9±4.2° in male patients. There were significant differences in the depth from the skinto the TP and IF between males and females. Conclusions: These findings are expected to provide a guideline for more accurate needle placement and successful block during ISBPB. (Korean J Anesthesiol 2008;55:570~4)
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백서 좌골신경에 시행한 박동성 고주파술 ( Pulsed Radiofrequency )이 급성 통증과 신경조직에 미치는 영향
이기헌(Kee Heon Lee),신근만(Keun Man Shin),권경석(Kyoung Seok Kweon),정배희(Bae Hee Jung),임소영(So Young Lim),홍순영(Soon Yong Hong),최영희(Young Hee Choi),박영의(Young Euy Park) 대한통증학회 2000 The Korean Journal of Pain Vol.13 No.2
N/A Background: Pulsed radiofrequency (RF) lesioning is a painless procedure and causes no neurodestruction and neuritis-like reaction are common following conventional RF lesioning. There is little data about the effect of pulsed RF especially with regard to its suitability for the treatment of acute pain. The possibility of a placebo effect cannot be ruled out because a double-blind study was not performed in previous studies. There is also no neuropathologic study about pulsed RF. Methods: The rats were anesthetized with sodium pentobarbital (40 mg/kg, i.p.; supplemented as necessary). The common sciatic nerve was exposed by blunt dissection through biceps femoris. Pulsed RF was administered to the common sciatic nerve using a 30 ms/s pulse with for 120 seconds. The temperature reached was no more than 42℃. Analgesia was determined using hot-plate assay shortly and, 3 days and 1 week before, and 2 weeks after operation. Lesions were examined with LM (light microscope) and EM (electron microscope) 2 weeks later. Results: There were no differences in response latencies between the control and experimental group. There were many vacuoles with hyaline bodies in the Schwann cell cytoplasm rather than axon in LM and larger electron dense bodies. No changes were found in the axon or unmyelinated fibers. Only small changes were found in the sheaths of myelinated fibers and Schwann cells. Conclusions: We therefore do think that any analgesic effect of pulsed RF is not a result of block of neural conduction. But rather than it can be attributed to others factors. It was also ineffective as a treatment for acute pain such as that caused by the hot-plate test.
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Isoflurane 농도 변화에 따른 뇌파의 Spectral Analysis
김현주,임소영,홍순용,윤영준,권경석,정배희,이기현 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.40 No.3
Background: Adequate depth of anesthesia requires a sufficient amount of the agent to secure unconsciousness and other components of anesthesia as needed for that particular surgical procedure, without jeopardizing vital organ functions. To evaluate the relationship of depth of anesthesia to EEG, we studied the effects of increasing minimum alveolar concentration (MAC) of isoflurane (arousal, 1, 1.3, 1.5 MAC) on power spectral analysis of the EEG. Methods: To determine 1 MAC, we studied sixty patients undergoing general anesthesia who were randomly allocated to receive isoflurane at several predetermined end-tidal concentration. A minimum of 15 min was allowed between induction and skin incision to allow steady state condition. Patients were observed for gross purposeful movement for 60 seconds after incision. The MAC was calculated using maximum likelihood solution to a logistic regression model. Another forty patients were randomly allocated to have their EEGs recorded. General anesthesia was induced with oxygen and isoflurane only. After loss of consciousness, succinylcholine 1.5 mg/kg was given and intubation followed. The EEG was recorded awake and after 15 min at steady state conditions of 1, 1.3 and 1.5 MAC isoflurane had been achieved. Spectral edge frequency 95% (SEF95), median spectral frequency (MSF), total power (TP) and relative power in the delta, theta, alpha and beta band were calculated. Results: The MAC of isoflurane was 1.21 vol% (20-40 years) and 1.09 vol% (40-60 years). The distribution of spectral EEG indices of the EEGs were established and compared. The threshold value of SEF95 14 Hz to differentiate between arousal and 1.3 and 1.5 MAC had a sensitivity of 60.5% (1.3 MAC), 71% (1.5 MAC) and specificity of 74.4% (1.3 and 1.5 MAC) and that of MSF 5 Hz had a sensitivity of 71% (1.3 MAC), 81.5% (1.5 MAC) and specificity of 48% (1.3 MAC), 48.8% (1.5 MAC). Conclusions: With regard to the dose-related decrease in SEF95 and MSF under increasing end- expiratory concentrations of isoflurane as described in the present study, future studies may have to
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