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임상연구 : 복강경하 부인과 수술 시 Nicardipine 투여가 마취 유도, 마취유지 및 회복에 미치는 효과
전우재 ( Woo Jae Jeon ),최윤정 ( Yun Jeong Choi ),이건승 ( Gurn Seung Lee ),심재항 ( Jae Hang Shim ),조상윤 ( Sang Yun Cho ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.50 No.5
Background: Pneumoperitoneum for a gynecologic laparoscopic surgery induces hemodynamic changes. We evaluated the effects of nicardipine on induction, maintenance, and recovery. Methods: Thirty patients scheduled for gynecologic laparoscopic surgery were randomly allocated to two groups: control group (placebo group, n = 15), group N (nicardipine group, 10μg/kg followed by 0.5-2.0μg/kg/min). The systolic arterial pressure, mean arterial pressure, and heart rate were measured at preinduction, induction, intubation and 5, 10, 15, 20 min after insufflation. Loss of consciousness, induction dose, effective site concentration, propofol maintenance dose (the maintenance dose of propofol from intubation to end of anesthesia, PMD) were also measured. Propofol was titrated to maintain a bispectal index value of 40-60. Results: There was a significant difference in PMD between two groups. The PMD of group N was significantaly less than group C. Nicardipine adminstration attenuated increase in the blood pressure, but did not affect on heart rates during CO2 insufflation. Conclusions: Co-administration of nicardipine was effective in attenuating the hemodynamic changes after pneumoperitoneum during gynecologic laparoscopic surgery, without changes of induction and recovery. (Korean J Anesthesiol 2006; 50: 515~8)
임상연구 : Clonidine 전투약이 Propofol에 의한 마취유도 및 기관내 삽관 시 A-Line(TM) ARX Index와 혈역학적 변화에 미치는 영향
최원진 ( Won Jin Choi ),전우재 ( Woo Jae Jeon ),심재항 ( Jae Hang Shim ),조상윤 ( Sang Yoon Cho ),염종훈 ( Jong Hoon Yeom ),신우종 ( Woo Jong Shin ),김경헌 ( Kyoung Hun Kim ) 대한마취과학회 2003 Korean Journal of Anesthesiology Vol.45 No.1
임상연구 : 광봉을 이용한 기관내 삽관 시 혈역학적인 변화를 최소화하기 위한 Remifentanil의 정적 효과처 농도는?
이정혁 ( Jeoung Hyuk Lee ),전우재 ( Woo Jae Jeon ),심재항 ( Jae Hang Shim ),조상윤 ( Sang Yoon Cho ),염종훈 ( Jong Hoon Yeom ),신우종 ( Woo Jong Shin ),김경헌 ( Kyoung Hun Kim ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.52 No.3
Background: In the previous studies, remifentanil reduces the hemodynamic change induced by endotracheal intubation. We studied the optimal effect site concentration of remifentanil for endotracheal intubation using light wand. Methods: Sixty ASA 1 or 2 patients scheduled for elective surgery under general anesthesia were classified in three groups according to the TCI (target controlled infusion) dose of remifentanil. Each group was administered 4μg/ml of propofol TCI, rocuronium, with 2 ng/ml (group 1), 4 ng/ml (group 2), 6 ng/ml (group 3) of remifentanil TCI. Blood pressure, heart rate and bispectral index score were measured before induction, 3 minutes after remifentanil and propofol TCI, after endotracheal intubation using light wand, and 3 minutes after endotracheal intubation. Statistical analysis was done for comparison of time and dose dependant change among the groups. Results: After endotrachal intubation, blood pressure and heart rate were significantly increased in group 1, and decreased in group 2 and 3. 3 minute after endotracheal intubation, heart rate significantly decreased in group 3, but there were no changes in group 2. Conclusions: The spontaneous BRS was decreased during ketamine induction of general anesthesia. These results suggest that anesthesia induction with ketamine impairs baroreflex control of heart rate, which may provoke hemodynamic instability. (Korean J Anesthesiol 2007; 52: 278~83)
클라우드 네이티브 IAM(Identity and Access Management) 솔루션
박채림 ( Chae-rim Park ),전우재 ( Woo-jae Jeon ),박진형 ( Jin-hyung Park ),박성훈 ( Sung-hun Park ) 한국정보처리학회 2022 한국정보처리학회 학술대회논문집 Vol.29 No.2
본 논문은 클라우드 환경에 적합한 IAM(Identity and Access Management) 솔루션을 제안한다. 오픈소스 라이브러리인 Keycloak[1]을 이용하여 그룹 별 권한 관리 및 권한에 따른 리소스 관리가 가능하도록 하며, 솔루션을 쉽게 도입하여 사용할 수 있도록 컨테이너 기술을 통해 신속하게 환경을 구축하고 배포할 수 있게 도와주는 플랫폼인 Docker 를 사용해 Docker image 형식으로 제공한다.
증례보고 : Cornelia de Lange Syndrome 환자의 전신마취 경험
조상윤 ( Sang Yun Cho ),전우재 ( Woo Jae Jeon ),조영현 ( Yung Hyun Cho ),심재항 ( Jae Hang Shim ),염종훈 ( Jong Hoon Yeom ),신우종 ( Woo Jong Shin ),김경헌 ( Kyoung Hun Kim ) 대한마취과학회 2008 Korean Journal of Anesthesiology Vol.55 No.6
Cornelia de Lange syndrome (Amsterdam dwarfism) is a congenital disease characterized by mental retardation associated with multiple malformation. A genetic etiology has been proposed, with suggestions of autosomal dominant and recessive inheritance. It affects one in 30,000 to 60,000 live births. Two-thirds of patients with the condition die before the end of their first year; death occurs from pulmonary aspiration in infancy, and from infections and bowel obstruction in later life. One reference to the syndrome highlights problems with seizures, cardiac abnormalities and difficult tracheal intubation but apart from this paper, there is little published information about the anesthetic management. (Korean J Anesthesiol 2008; 55: 769~73)
염종훈 ( Jong Hoon Yeom ),신우종 ( Woo Jong Shin ),김유정 ( Yu Jung Kim ),심재항 ( Jae Hang Shim ),전우재 ( Woo Jae Jeon ),조상윤 ( Sang Yun Cho ),김경헌 ( Kyoung Hun Kim ) 대한마취과학회 2009 Korean Journal of Anesthesiology Vol.56 No.5
Background: We hypothesized that pressure control ventilation allows a more even distribution in the lung and better maintenance of the mean airway pressure than is achieved with volume control ventilation. We try to compare the effect of pressure control ventilation (PC) with that of volume control ventilation without an end-inspiratory pause (VC) during one-lung ventilation (OLV) in an anesthetized, paralyzed patient for performing thoracopic bullectomy of the lung. Methods: We ventilated 20 patients with VC and PC after the insertion of a thoracoscope in continual order for, at least for 15 minutes, for each, VC and PC procedure. At the end of VC and PC, the respiratory mechanics, gasometrics, and hemodynamic parameters were measured and collected. Results: We found no significant differences between VC and PC except for the peak inspiratory airway pressure (PIP), the mean airway pressure and the arterial oxygen partial pressure (PaO2). The PIP was significantly decreased from 27.0±6.0 cmH2O (VC) to 21.8±5.4 cmH2O (PC). The mean airway pressure was significantly increased from 8.6±1.6 cmH2O (VC) to 9.4±2.0 cmH2O (PC), and the PaO2 was significantly increased from 252.9±97.3 mmHg (VC) to 285.2±103.8 mmHg (PC). Conclusions: If PC allows mechanical ventilation with the same tidal volume and respiratory rate as VC during OLV, then PC significantly increases the PaO2 but this is not clinically significant, and the PC significantly decreases the PIP, which induces barotrauma or volutrauma when the PIP is excessively high. (Korean J Anesthesiol 2009;56:492~6)
실험연구 : Midazolam이 가토의 대뇌동맥 평활근세포의 외향성 K+ 전류에 미치는 영향
신영철 ( Young Chul Shin ),심재항 ( Jae Hang Shim ),전우재 ( Woo Jae Jeon ),조상윤 ( Sang Yoon Cho ),신우종 ( Woo Jong Shin ),김경헌 ( Kyoung Hun Kim ),염종훈 ( Jong Hoon Yeom ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.52 No.1
Background: Midazolam has a direct relaxing effect on vascular smooth muscle, but the mechanisms that this agent produces muscle relaxation are not fully understood. The current study was performed to identify the effects of the midazolam on K+ channels current in rabbit cerebral arterial smooth muscle cells. Methods: Whole cell patch-clamp recording technique was used to evaluate the effects of midazolam (0.1 to 100μM) on outward K+ channel currents in dispersed rabbit cerebral arterial smooth muscle cells. Results: Outward K+ currents of rabbit cerebral artery smooth muscle cells were voltage-dependent. Midazolam (10, 100μM) tested significantly inhibited outward K+ currents in a dose-dependent manner and half-blocking concentration (IC50) was 15.94μm at 60 mV. Conclusions: Midazolam inhibit outward K+ currents of rabbit cerebral arterial smooth muscle cells. Further study will be needed to determine the effect of midazolam on calcium channel current because it is unclear if the inhibitory effect of midazolam on outward K+ current induces vasoconstriction. (Korean J Anesthesiol 2007; 52: 67~71)