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임상연구 : 척추마취 환자에서 차단높이가 진정을 위한 Propofol 요구량에 미치는 영향
신일우 ( Il Woo Shin ),고지은 ( Ji Eun Go ),박경언 ( Kyeong Eon Park ),손주태 ( Ju Tae Sohn ),정영균 ( Young Kyun Chung ),이헌근 ( Heon Keun Lee ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.50 No.6
Background: It has been reported that spinal anesthesia has a sedative effect and so this decreases the hypnotic requirement of intravenous anesthetic. Therefore, we have conducted a prospective randomized study to investigate the effect of the spinal anesthesia level on the hypnotic requirements for conscious sedation. Methods: Forty adult patients were scheduled to undergo spinal anesthesia, and they were randomly allocated to one of the two groups. After subarachnoid injection of 0.5% hyperbaric bupivacaine 16 mg, the patients in group 1 and group 2 were maintained in a reversed Trendelenburg position and a Trendelenburg position, respectively. After fifteen minutes, the target controlled infusion of propofol was started for achieving a target concentration of 1μg/ml, and the mean BIS for 1 min was checked after an effect site concentration (Ce) of 1μg/ml was reached. The target controlled infusion of propofol was restarted at a target concentration (Tc) of 1.5μg/ml, and the mean BIS for 1 min was checked after the Ce level of 1.5μg/ml was reached. Results: The mean BIS at 1μg/ml Ce was 90.0 ± 8.5 and 77.8 ± 10.3 in group 1 and group 2, respectively. The mean BIS at 1.5 g/ml Ce was 73.6 ± 19.4 and 60.0 ± 13.1, respectively. Conclusions: There was a significant difference in the requirements of propofol for conscious sedation between the below T12 block group and the above T4 block group. (Korean J Anesthesiol 2006; 50: 642~5)
Remifentanil은 흰쥐의 국소 허혈-재관류 모델에서 심근 보호 효과가 있는가?
신일우 ( Il Woo Shin ),조만석 ( Man Seok Cho ),장인석 ( In Seok Jang ),손주태 ( Ju Tae Sohn ),이헌근 ( Heon Keun Lee ),정영균 ( Young Kyun Chung ) 대한마취과학회 2009 Korean Journal of Anesthesiology Vol.57 No.2
Background: It is known that some opioids protect the myocardial tissue from myocardial ischemia-reperfusion (I/R) injury. The aim of this study was to investigate whether remifentanil, at a clinically relevant concentration that`s during the peri-ischemic period, has a protective effect against a regional I/R injury in an in vivo rat heart model. Methods: Rats were subjected to 25 minutes of coronary artery occlusion and this was followed by 24 hours of reperfusion. A microcatheter was advanced into the left ventricle and the hemodynamic function was evaluated after 24 hours of reperfusion. The infarct size was determined by triphenyltetrazolium staining. The serum level of cardiac troponin-I (cTnI) was determined by ELISA (enzyme-linked immunosorbent assay). Results: Remifentanil administration during the peri-ischemic period didn`t show any identifiable protective effects for the hemodynamic function or to reduce the infarct size. In the control group, the peak rate of the ventricular pressure increase (+dP/dt(max)) (P<0.05) and the peak rate of the intraventricular pressure decline (-dP/dt(max) P<0.05) were significantly decreased as compared to those values for the sham group. In the remifentanil group, the +dP/dt(max) and -dP/dt(max) were not improved compared to those values of the control group. The infarct size was 45.6% of the area at risk in the control group, and the infarct size was reduced by administration of remifentanil to 43.2% in the remifentanil group. The I/R-induced serum level of cTn-I was not reduced by remifentanil infusion during the peri-ischemic period. Conclusions: Remifentanil, at a clinically relevant concentration that`s infused during the peri-ischemic period, has no myocardial protective effect after regional myocardial I/R injury in an in vivo rat heart model. (Korean J Anesthesiol 2009;57:190∼4)
증례보고 : 난치성 개흉술후통증증후군 환자에서 시행한 척수자극술
이헌근 ( Heon Keun Lee ),이승화 ( Seung Wha Lee ),신일우 ( Il Woo Shin ),손주태 ( Ju Tae Sohn ),정영주 ( Yeong Ju Jeong ),정영균 ( Young Kyun Chung ) 대한마취과학회 2009 Korean Journal of Anesthesiology Vol.57 No.5
Post-thoracotomy syndrome is a condition characterized by pain that continues for more than 2 months after a thoracotomic procedure. Some patients suffer from devastating chest pain despite receiving multimodal treatment such as analgesics, antidepressants, anticonvulsants and nerve blockers. Spinal cord stimulation has been reported to be a promising relief for the intractable neuropathic pain. A 60-year-old man who had been suffering from post-thoracotomy pain for 20 years showed relief of pain after spinal cord stimulation. Spinal cord stimulation thus seems to be a viable option for patients who do not respond to conventional pain management therapy. (Korean J Anesthesiol 2009;57:678∼81)
페로브스카이트를 이용한 에너지 하베스팅 IoT 센서 데이터 수집 장치
정도영(Do-Young Chung),김광식(Kwang-sik Kim),신일우(IL-Woo Shin),안희찬(Hee-Chan An) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.10
Recently we have facing Un-contact and the New Normal era along with the digital conversion of the fourth round of industrial explosive growing environment and development. However, development of self-powered IoT modules applied to real environments responding to these technological demands is insufficient. In addition, advanced and innovative technologies such as sensors, energy harvesters, batteries, ICs, and wireless communication, which are related element technologies, are required. In order to overcome the problem of power supply in indoor/outdoor wireless sensor collection environment and consequently implement an edge AI device based on self-powered IoT sensor, Energy harvesting IoT sensor collection device using low-light solar module Development is deserved special emphasis.
장인석 ( In Seok Jang ),김성환 ( Sung Hwan Kim ),이정은 ( Jung Eun Lee ),김종우 ( Jong Woo Kim ),최준영 ( Jun Young Choi ),신일우 ( Il Woo Shin ),김현옥 ( Hyun Ok Kim ) 대한외상학회 2014 大韓外傷學會誌 Vol.27 No.3
The severity of blunt hepatic injury correlates with internal organ damage. We experienced a patient, who had an extensive crushed liver injury. The patient was a 28-year-old man, who was involved in a traffic accident in which a wheel ran over his right upper abdomen. A grade V severe hepatic laceration was diagnosed with computed tomography. His vital signs were stable, so we could wait for times with conservative management. Bile leakage led to biloma and bile spillage into the peritoneal space. Selective percutaneous drainage was needed to control the several biloma. After four months of conservative management, could the patient was discharged in good condition. [ J Trauma Inj 2014;27:84-88 ]